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linux/drivers/soc/rockchip/io-domain.c

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 285 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-29 07:17:56 -07:00
// SPDX-License-Identifier: GPL-2.0-only
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
/*
* Rockchip IO Voltage Domain driver
*
* Copyright 2014 MundoReader S.L.
* Copyright 2014 Google, Inc.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#define MAX_SUPPLIES 16
/*
* The max voltage for 1.8V and 3.3V come from the Rockchip datasheet under
* "Recommended Operating Conditions" for "Digital GPIO". When the typical
* is 3.3V the max is 3.6V. When the typical is 1.8V the max is 1.98V.
*
* They are used like this:
* - If the voltage on a rail is above the "1.8" voltage (1.98V) we'll tell the
* SoC we're at 3.3.
* - If the voltage on a rail is above the "3.3" voltage (3.6V) we'll consider
* that to be an error.
*/
#define MAX_VOLTAGE_1_8 1980000
#define MAX_VOLTAGE_3_3 3600000
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
#define PX30_IO_VSEL 0x180
#define PX30_IO_VSEL_VCCIO6_SRC BIT(0)
#define PX30_IO_VSEL_VCCIO6_SUPPLY_NUM 1
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
#define RK3288_SOC_CON2 0x24c
#define RK3288_SOC_CON2_FLASH0 BIT(7)
#define RK3288_SOC_FLASH_SUPPLY_NUM 2
PM / AVS: rockchip-io: add io selectors and supplies for rk3328 This adds the necessary data for handling io voltage domains on the rk3328. As interesting tidbit, the rk3328 only contains one iodomain area in the regular General Register Files (GRF). Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-23 20:33:11 +08:00
#define RK3328_SOC_CON4 0x410
#define RK3328_SOC_CON4_VCCIO2 BIT(7)
#define RK3328_SOC_VCCIO2_SUPPLY_NUM 1
PM / AVS: rockchip-io: add io selectors and supplies for rk3368 This adds the necessary data for handling io voltage domains on the rk3368. As interesting tidbit, the rk3368 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-04 21:37:01 +02:00
#define RK3368_SOC_CON15 0x43c
#define RK3368_SOC_CON15_FLASH0 BIT(14)
#define RK3368_SOC_FLASH_SUPPLY_NUM 2
PM / AVS: rockchip-io: add io selectors and supplies for rk3399 This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-16 02:45:26 +08:00
#define RK3399_PMUGRF_CON0 0x180
#define RK3399_PMUGRF_CON0_VSEL BIT(8)
#define RK3399_PMUGRF_VSEL_SUPPLY_NUM 9
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
#define RK3568_PMU_GRF_IO_VSEL0 (0x0140)
#define RK3568_PMU_GRF_IO_VSEL1 (0x0144)
#define RK3568_PMU_GRF_IO_VSEL2 (0x0148)
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
struct rockchip_iodomain;
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
struct rockchip_iodomain_supply {
struct rockchip_iodomain *iod;
struct regulator *reg;
struct notifier_block nb;
int idx;
};
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
struct rockchip_iodomain_soc_data {
int grf_offset;
const char *supply_names[MAX_SUPPLIES];
void (*init)(struct rockchip_iodomain *iod);
int (*write)(struct rockchip_iodomain_supply *supply, int uV);
};
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
struct rockchip_iodomain {
struct device *dev;
struct regmap *grf;
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
const struct rockchip_iodomain_soc_data *soc_data;
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
struct rockchip_iodomain_supply supplies[MAX_SUPPLIES];
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
int (*write)(struct rockchip_iodomain_supply *supply, int uV);
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
};
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
static int rk3568_iodomain_write(struct rockchip_iodomain_supply *supply, int uV)
{
struct rockchip_iodomain *iod = supply->iod;
u32 is_3v3 = uV > MAX_VOLTAGE_1_8;
u32 val0, val1;
int b;
switch (supply->idx) {
case 0: /* pmuio1 */
break;
case 1: /* pmuio2 */
b = supply->idx;
val0 = BIT(16 + b) | (is_3v3 ? 0 : BIT(b));
b = supply->idx + 4;
val1 = BIT(16 + b) | (is_3v3 ? BIT(b) : 0);
regmap_write(iod->grf, RK3568_PMU_GRF_IO_VSEL2, val0);
regmap_write(iod->grf, RK3568_PMU_GRF_IO_VSEL2, val1);
break;
case 3: /* vccio2 */
break;
case 2: /* vccio1 */
case 4: /* vccio3 */
case 5: /* vccio4 */
case 6: /* vccio5 */
case 7: /* vccio6 */
case 8: /* vccio7 */
b = supply->idx - 1;
val0 = BIT(16 + b) | (is_3v3 ? 0 : BIT(b));
val1 = BIT(16 + b) | (is_3v3 ? BIT(b) : 0);
regmap_write(iod->grf, RK3568_PMU_GRF_IO_VSEL0, val0);
regmap_write(iod->grf, RK3568_PMU_GRF_IO_VSEL1, val1);
break;
default:
return -EINVAL;
soc: rockchip: io-domain: Remove unneeded semicolon Fix the following coccicheck warnings: ./drivers/soc/rockchip/io-domain.c:118:2-3: Unneeded semicolon. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Link: https://lore.kernel.org/r/1629361749-97977-1-git-send-email-jiapeng.chong@linux.alibaba.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-19 16:29:09 +08:00
}
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
return 0;
}
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
static int rockchip_iodomain_write(struct rockchip_iodomain_supply *supply,
int uV)
{
struct rockchip_iodomain *iod = supply->iod;
u32 val;
int ret;
/* set value bit */
val = (uV > MAX_VOLTAGE_1_8) ? 0 : 1;
val <<= supply->idx;
/* apply hiword-mask */
val |= (BIT(supply->idx) << 16);
ret = regmap_write(iod->grf, iod->soc_data->grf_offset, val);
if (ret)
dev_err(iod->dev, "Couldn't write to GRF\n");
return ret;
}
static int rockchip_iodomain_notify(struct notifier_block *nb,
unsigned long event,
void *data)
{
struct rockchip_iodomain_supply *supply =
container_of(nb, struct rockchip_iodomain_supply, nb);
int uV;
int ret;
/*
* According to Rockchip it's important to keep the SoC IO domain
* higher than (or equal to) the external voltage. That means we need
* to change it before external voltage changes happen in the case
* of an increase.
*
* Note that in the "pre" change we pick the max possible voltage that
* the regulator might end up at (the client requests a range and we
* don't know for certain the exact voltage). Right now we rely on the
* slop in MAX_VOLTAGE_1_8 and MAX_VOLTAGE_3_3 to save us if clients
* request something like a max of 3.6V when they really want 3.3V.
* We could attempt to come up with better rules if this fails.
*/
if (event & REGULATOR_EVENT_PRE_VOLTAGE_CHANGE) {
struct pre_voltage_change_data *pvc_data = data;
uV = max_t(unsigned long, pvc_data->old_uV, pvc_data->max_uV);
} else if (event & (REGULATOR_EVENT_VOLTAGE_CHANGE |
REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE)) {
uV = (unsigned long)data;
} else {
return NOTIFY_OK;
}
dev_dbg(supply->iod->dev, "Setting to %d\n", uV);
if (uV > MAX_VOLTAGE_3_3) {
dev_err(supply->iod->dev, "Voltage too high: %d\n", uV);
if (event == REGULATOR_EVENT_PRE_VOLTAGE_CHANGE)
return NOTIFY_BAD;
}
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
ret = supply->iod->write(supply, uV);
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
if (ret && event == REGULATOR_EVENT_PRE_VOLTAGE_CHANGE)
return NOTIFY_BAD;
PM / AVS: rockchip-io: make the log more consistent When testing SD hotplug automatically, I got bunch of useless log like this: [ 588.357838] mmc0: card 0007 removed [ 589.492664] rockchip-iodomain ff770000.syscon:io-domains: Setting to 3300000 done [ 589.500698] vccio_sd: ramp_delay not set [ 589.504817] rockchip-iodomain ff770000.syscon:io-domains: Setting to 3300000 done [ 589.669705] rockchip-iodomain ff770000.syscon:io-domains: Setting to 3300000 done [ 589.677593] vccio_sd: ramp_delay not set [ 589.681581] rockchip-iodomain ff770000.syscon:io-domains: Setting to 1800000 done [ 590.032820] dwmmc_rockchip ff0c0000.dwmmc: Successfully tuned phase to 140 [ 590.039725] mmc0: new ultra high speed SDR50 SDHC card at address 0007 [ 590.046641] mmcblk0: mmc0:0007 SD32G 29.3 GiB [ 590.052163] mmcblk0: p1 Moreover the code is intent to print the 'uV' for debug but later print it using dev_info. It looks more like to me that it should be the real intention of the code. Anyway, let's mark this verbose log as debug message. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-10-10 20:44:22 +08:00
dev_dbg(supply->iod->dev, "Setting to %d done\n", uV);
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
return NOTIFY_OK;
}
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
static void px30_iodomain_init(struct rockchip_iodomain *iod)
{
int ret;
u32 val;
PM / AVS: rockchip-io: fix the supply naming for the emmc supply on px30 The supply going to the emmc/flash is named vccio6, not vccio0 and while the code does this correctly already, the comments and error output do not. So just change these values to the correct ones. Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-01-21 23:28:59 +01:00
/* if no VCCIO6 supply we should leave things alone */
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
if (!iod->supplies[PX30_IO_VSEL_VCCIO6_SUPPLY_NUM].reg)
return;
/*
PM / AVS: rockchip-io: fix the supply naming for the emmc supply on px30 The supply going to the emmc/flash is named vccio6, not vccio0 and while the code does this correctly already, the comments and error output do not. So just change these values to the correct ones. Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-01-21 23:28:59 +01:00
* set vccio6 iodomain to also use this framework
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
* instead of a special gpio.
*/
val = PX30_IO_VSEL_VCCIO6_SRC | (PX30_IO_VSEL_VCCIO6_SRC << 16);
ret = regmap_write(iod->grf, PX30_IO_VSEL, val);
if (ret < 0)
PM / AVS: rockchip-io: fix the supply naming for the emmc supply on px30 The supply going to the emmc/flash is named vccio6, not vccio0 and while the code does this correctly already, the comments and error output do not. So just change these values to the correct ones. Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-01-21 23:28:59 +01:00
dev_warn(iod->dev, "couldn't update vccio6 ctrl\n");
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
}
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
static void rk3288_iodomain_init(struct rockchip_iodomain *iod)
{
int ret;
u32 val;
/* if no flash supply we should leave things alone */
if (!iod->supplies[RK3288_SOC_FLASH_SUPPLY_NUM].reg)
return;
/*
* set flash0 iodomain to also use this framework
* instead of a special gpio.
*/
val = RK3288_SOC_CON2_FLASH0 | (RK3288_SOC_CON2_FLASH0 << 16);
ret = regmap_write(iod->grf, RK3288_SOC_CON2, val);
if (ret < 0)
dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
}
PM / AVS: rockchip-io: add io selectors and supplies for rk3328 This adds the necessary data for handling io voltage domains on the rk3328. As interesting tidbit, the rk3328 only contains one iodomain area in the regular General Register Files (GRF). Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-23 20:33:11 +08:00
static void rk3328_iodomain_init(struct rockchip_iodomain *iod)
{
int ret;
u32 val;
/* if no vccio2 supply we should leave things alone */
if (!iod->supplies[RK3328_SOC_VCCIO2_SUPPLY_NUM].reg)
return;
/*
* set vccio2 iodomain to also use this framework
* instead of a special gpio.
*/
val = RK3328_SOC_CON4_VCCIO2 | (RK3328_SOC_CON4_VCCIO2 << 16);
ret = regmap_write(iod->grf, RK3328_SOC_CON4, val);
if (ret < 0)
dev_warn(iod->dev, "couldn't update vccio2 vsel ctrl\n");
}
PM / AVS: rockchip-io: add io selectors and supplies for rk3368 This adds the necessary data for handling io voltage domains on the rk3368. As interesting tidbit, the rk3368 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-04 21:37:01 +02:00
static void rk3368_iodomain_init(struct rockchip_iodomain *iod)
{
int ret;
u32 val;
/* if no flash supply we should leave things alone */
if (!iod->supplies[RK3368_SOC_FLASH_SUPPLY_NUM].reg)
return;
/*
* set flash0 iodomain to also use this framework
* instead of a special gpio.
*/
val = RK3368_SOC_CON15_FLASH0 | (RK3368_SOC_CON15_FLASH0 << 16);
ret = regmap_write(iod->grf, RK3368_SOC_CON15, val);
if (ret < 0)
dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
}
PM / AVS: rockchip-io: add io selectors and supplies for rk3399 This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-16 02:45:26 +08:00
static void rk3399_pmu_iodomain_init(struct rockchip_iodomain *iod)
{
int ret;
u32 val;
/* if no pmu io supply we should leave things alone */
if (!iod->supplies[RK3399_PMUGRF_VSEL_SUPPLY_NUM].reg)
return;
/*
* set pmu io iodomain to also use this framework
* instead of a special gpio.
*/
val = RK3399_PMUGRF_CON0_VSEL | (RK3399_PMUGRF_CON0_VSEL << 16);
ret = regmap_write(iod->grf, RK3399_PMUGRF_CON0, val);
if (ret < 0)
dev_warn(iod->dev, "couldn't update pmu io iodomain ctrl\n");
}
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
static const struct rockchip_iodomain_soc_data soc_data_px30 = {
.grf_offset = 0x180,
.supply_names = {
NULL,
"vccio6",
"vccio1",
"vccio2",
"vccio3",
"vccio4",
"vccio5",
"vccio-oscgpi",
},
.init = px30_iodomain_init,
};
static const struct rockchip_iodomain_soc_data soc_data_px30_pmu = {
.grf_offset = 0x100,
.supply_names = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"pmuio1",
"pmuio2",
},
};
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
/*
* On the rk3188 the io-domains are handled by a shared register with the
* lower 8 bits being still being continuing drive-strength settings.
*/
static const struct rockchip_iodomain_soc_data soc_data_rk3188 = {
.grf_offset = 0x104,
.supply_names = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"ap0",
"ap1",
"cif",
"flash",
"vccio0",
"vccio1",
"lcdc0",
"lcdc1",
},
};
PM / AVS: rockchip-io: add io selectors and supplies for rk3228 This adds the necessary data for handling io voltage domains on the rk3228. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-09 17:36:14 +08:00
static const struct rockchip_iodomain_soc_data soc_data_rk3228 = {
.grf_offset = 0x418,
.supply_names = {
"vccio1",
"vccio2",
"vccio3",
"vccio4",
},
};
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
static const struct rockchip_iodomain_soc_data soc_data_rk3288 = {
.grf_offset = 0x380,
.supply_names = {
"lcdc", /* LCDC_VDD */
"dvp", /* DVPIO_VDD */
"flash0", /* FLASH0_VDD (emmc) */
"flash1", /* FLASH1_VDD (sdio1) */
"wifi", /* APIO3_VDD (sdio0) */
"bb", /* APIO5_VDD */
"audio", /* APIO4_VDD */
"sdcard", /* SDMMC0_VDD (sdmmc) */
"gpio30", /* APIO1_VDD */
"gpio1830", /* APIO2_VDD */
},
.init = rk3288_iodomain_init,
};
PM / AVS: rockchip-io: add io selectors and supplies for rk3328 This adds the necessary data for handling io voltage domains on the rk3328. As interesting tidbit, the rk3328 only contains one iodomain area in the regular General Register Files (GRF). Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-23 20:33:11 +08:00
static const struct rockchip_iodomain_soc_data soc_data_rk3328 = {
.grf_offset = 0x410,
.supply_names = {
"vccio1",
"vccio2",
"vccio3",
"vccio4",
"vccio5",
"vccio6",
"pmuio",
},
.init = rk3328_iodomain_init,
};
PM / AVS: rockchip-io: add io selectors and supplies for rk3368 This adds the necessary data for handling io voltage domains on the rk3368. As interesting tidbit, the rk3368 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-04 21:37:01 +02:00
static const struct rockchip_iodomain_soc_data soc_data_rk3368 = {
.grf_offset = 0x900,
.supply_names = {
NULL, /* reserved */
"dvp", /* DVPIO_VDD */
"flash0", /* FLASH0_VDD (emmc) */
"wifi", /* APIO2_VDD (sdio0) */
NULL,
"audio", /* APIO3_VDD */
"sdcard", /* SDMMC0_VDD (sdmmc) */
"gpio30", /* APIO1_VDD */
"gpio1830", /* APIO4_VDD (gpujtag) */
},
.init = rk3368_iodomain_init,
};
static const struct rockchip_iodomain_soc_data soc_data_rk3368_pmu = {
.grf_offset = 0x100,
.supply_names = {
NULL,
NULL,
NULL,
NULL,
"pmu", /*PMU IO domain*/
"vop", /*LCDC IO domain*/
},
};
PM / AVS: rockchip-io: add io selectors and supplies for rk3399 This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-16 02:45:26 +08:00
static const struct rockchip_iodomain_soc_data soc_data_rk3399 = {
.grf_offset = 0xe640,
.supply_names = {
"bt656", /* APIO2_VDD */
"audio", /* APIO5_VDD */
"sdmmc", /* SDMMC0_VDD */
"gpio1830", /* APIO4_VDD */
},
};
static const struct rockchip_iodomain_soc_data soc_data_rk3399_pmu = {
.grf_offset = 0x180,
.supply_names = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"pmu1830", /* PMUIO2_VDD */
},
.init = rk3399_pmu_iodomain_init,
};
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
static const struct rockchip_iodomain_soc_data soc_data_rk3568_pmu = {
.grf_offset = 0x140,
.supply_names = {
"pmuio1",
"pmuio2",
"vccio1",
"vccio2",
"vccio3",
"vccio4",
"vccio5",
"vccio6",
"vccio7",
},
.write = rk3568_iodomain_write,
};
PM / AVS: rockchip-io: add io selectors and supplies for RV1108 This adds the necessary data for handling io voltage domains on the RV1108. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-21 18:58:33 +08:00
static const struct rockchip_iodomain_soc_data soc_data_rv1108 = {
.grf_offset = 0x404,
.supply_names = {
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"vccio1",
"vccio2",
"vccio3",
"vccio5",
"vccio6",
},
};
static const struct rockchip_iodomain_soc_data soc_data_rv1108_pmu = {
.grf_offset = 0x104,
.supply_names = {
"pmu",
},
};
soc: rockchip: io-domain: Add RV1126 IO domains Add IO domains support for RV1126 SoC. Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Signed-off-by: Jagan Teki <jagan@edgeble.ai> Link: https://lore.kernel.org/r/20220818124132.125304-6-jagan@edgeble.ai Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2022-08-18 18:11:18 +05:30
static const struct rockchip_iodomain_soc_data soc_data_rv1126_pmu = {
.grf_offset = 0x140,
.supply_names = {
NULL,
"vccio1",
"vccio2",
"vccio3",
"vccio4",
"vccio5",
"vccio6",
"vccio7",
"pmuio0",
"pmuio1",
},
};
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
static const struct of_device_id rockchip_iodomain_match[] = {
PM / AVS: rockchip-io: add io selectors and supplies for PX30 This adds the necessary data for handling io voltage domains on PX30. As interesting tidbit, the PX30 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-05-15 19:48:19 +08:00
{
.compatible = "rockchip,px30-io-voltage-domain",
.data = (void *)&soc_data_px30
},
{
.compatible = "rockchip,px30-pmu-io-voltage-domain",
.data = (void *)&soc_data_px30_pmu
},
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
{
.compatible = "rockchip,rk3188-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3188
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
},
PM / AVS: rockchip-io: add io selectors and supplies for rk3228 This adds the necessary data for handling io voltage domains on the rk3228. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-09 17:36:14 +08:00
{
.compatible = "rockchip,rk3228-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3228
PM / AVS: rockchip-io: add io selectors and supplies for rk3228 This adds the necessary data for handling io voltage domains on the rk3228. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-06-09 17:36:14 +08:00
},
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
{
.compatible = "rockchip,rk3288-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3288
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
},
PM / AVS: rockchip-io: add io selectors and supplies for rk3328 This adds the necessary data for handling io voltage domains on the rk3328. As interesting tidbit, the rk3328 only contains one iodomain area in the regular General Register Files (GRF). Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-23 20:33:11 +08:00
{
.compatible = "rockchip,rk3328-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3328
PM / AVS: rockchip-io: add io selectors and supplies for rk3328 This adds the necessary data for handling io voltage domains on the rk3328. As interesting tidbit, the rk3328 only contains one iodomain area in the regular General Register Files (GRF). Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-23 20:33:11 +08:00
},
PM / AVS: rockchip-io: add io selectors and supplies for rk3368 This adds the necessary data for handling io voltage domains on the rk3368. As interesting tidbit, the rk3368 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-04 21:37:01 +02:00
{
.compatible = "rockchip,rk3368-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3368
PM / AVS: rockchip-io: add io selectors and supplies for rk3368 This adds the necessary data for handling io voltage domains on the rk3368. As interesting tidbit, the rk3368 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-04 21:37:01 +02:00
},
{
.compatible = "rockchip,rk3368-pmu-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3368_pmu
PM / AVS: rockchip-io: add io selectors and supplies for rk3368 This adds the necessary data for handling io voltage domains on the rk3368. As interesting tidbit, the rk3368 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-04 21:37:01 +02:00
},
PM / AVS: rockchip-io: add io selectors and supplies for rk3399 This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-16 02:45:26 +08:00
{
.compatible = "rockchip,rk3399-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3399
PM / AVS: rockchip-io: add io selectors and supplies for rk3399 This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-16 02:45:26 +08:00
},
{
.compatible = "rockchip,rk3399-pmu-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rk3399_pmu
PM / AVS: rockchip-io: add io selectors and supplies for rk3399 This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-16 02:45:26 +08:00
},
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
{
.compatible = "rockchip,rk3568-pmu-io-voltage-domain",
.data = &soc_data_rk3568_pmu
},
PM / AVS: rockchip-io: add io selectors and supplies for RV1108 This adds the necessary data for handling io voltage domains on the RV1108. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-21 18:58:33 +08:00
{
.compatible = "rockchip,rv1108-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rv1108
PM / AVS: rockchip-io: add io selectors and supplies for RV1108 This adds the necessary data for handling io voltage domains on the RV1108. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-21 18:58:33 +08:00
},
{
.compatible = "rockchip,rv1108-pmu-io-voltage-domain",
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
.data = &soc_data_rv1108_pmu
PM / AVS: rockchip-io: add io selectors and supplies for RV1108 This adds the necessary data for handling io voltage domains on the RV1108. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-08-21 18:58:33 +08:00
},
soc: rockchip: io-domain: Add RV1126 IO domains Add IO domains support for RV1126 SoC. Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Signed-off-by: Jagan Teki <jagan@edgeble.ai> Link: https://lore.kernel.org/r/20220818124132.125304-6-jagan@edgeble.ai Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2022-08-18 18:11:18 +05:30
{
.compatible = "rockchip,rv1126-pmu-io-voltage-domain",
.data = &soc_data_rv1126_pmu
},
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
{ /* sentinel */ },
};
PM / AVS: rockchip-io: Fix module autoload for OF platform driver This platform driver has a OF device ID table but the OF module alias information is not created so module autoloading won't work. Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-02 15:27:57 +01:00
MODULE_DEVICE_TABLE(of, rockchip_iodomain_match);
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
static int rockchip_iodomain_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *match;
struct rockchip_iodomain *iod;
PM / AVS: rockchip-io: make io-domains a child of the GRF IO-domain handling is part of the general register files, so should live under the grf directly. This change allows the grf to be a simple-mfd and the io-domains fetching the syscon regmap from that parent-node. The old binding is of course preserved, though deprecated. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: David Wu <david.wu@rock-chips.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-31 15:48:42 +02:00
struct device *parent;
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
int i, ret = 0;
if (!np)
return -ENODEV;
iod = devm_kzalloc(&pdev->dev, sizeof(*iod), GFP_KERNEL);
if (!iod)
return -ENOMEM;
iod->dev = &pdev->dev;
platform_set_drvdata(pdev, iod);
match = of_match_node(rockchip_iodomain_match, np);
PM / AVS: rockchip-io: account for const type of of_device_id.data This driver creates a number of const structures that it stores in the data field of an of_device_id array. The data field of an of_device_id structure has type const void *, so there is no need for a const-discarding cast when putting const values into such a structure. Furthermore, adding const to the declaration of the location that receives a const value from such a field ensures that the compiler will continue to check that the value is not modified. The const-discarding cast on the extraction from the data field is thus no longer needed. Done using Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-01-02 14:27:57 +01:00
iod->soc_data = match->data;
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
if (iod->soc_data->write)
iod->write = iod->soc_data->write;
else
iod->write = rockchip_iodomain_write;
PM / AVS: rockchip-io: make io-domains a child of the GRF IO-domain handling is part of the general register files, so should live under the grf directly. This change allows the grf to be a simple-mfd and the io-domains fetching the syscon regmap from that parent-node. The old binding is of course preserved, though deprecated. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Kevin Hilman <khilman@baylibre.com> Tested-by: David Wu <david.wu@rock-chips.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-03-31 15:48:42 +02:00
parent = pdev->dev.parent;
if (parent && parent->of_node) {
iod->grf = syscon_node_to_regmap(parent->of_node);
} else {
dev_dbg(&pdev->dev, "falling back to old binding\n");
iod->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
}
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
if (IS_ERR(iod->grf)) {
dev_err(&pdev->dev, "couldn't find grf regmap\n");
return PTR_ERR(iod->grf);
}
for (i = 0; i < MAX_SUPPLIES; i++) {
const char *supply_name = iod->soc_data->supply_names[i];
struct rockchip_iodomain_supply *supply = &iod->supplies[i];
struct regulator *reg;
int uV;
if (!supply_name)
continue;
reg = devm_regulator_get_optional(iod->dev, supply_name);
if (IS_ERR(reg)) {
ret = PTR_ERR(reg);
/* If a supply wasn't specified, that's OK */
if (ret == -ENODEV)
continue;
else if (ret != -EPROBE_DEFER)
dev_err(iod->dev, "couldn't get regulator %s\n",
supply_name);
goto unreg_notify;
}
/* set initial correct value */
uV = regulator_get_voltage(reg);
/* must be a regulator we can get the voltage of */
if (uV < 0) {
dev_err(iod->dev, "Can't determine voltage: %s\n",
supply_name);
soc: rockchip: io-domain: Fix error return code in rockchip_iodomain_probe() Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: e943c43b32ce ("PM: AVS: rockchip-io: Move the driver to the rockchip specific drivers") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Link: https://lore.kernel.org/r/1607070805-33038-1-git-send-email-zhangchangzhong@huawei.com Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2020-12-04 16:33:25 +08:00
ret = uV;
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
goto unreg_notify;
}
if (uV > MAX_VOLTAGE_3_3) {
dev_crit(iod->dev,
"%d uV is too high. May damage SoC!\n",
uV);
ret = -EINVAL;
goto unreg_notify;
}
/* setup our supply */
supply->idx = i;
supply->iod = iod;
supply->reg = reg;
supply->nb.notifier_call = rockchip_iodomain_notify;
soc: rockchip: io-domain: add rk3568 support The io-domain registers on RK3568 SoCs have three separated bits to enable/disable the 1.8v/2.5v/3.3v power. This patch make the write to be a operation, allow rk3568 uses a private register set function. Since the 2.5v mode hasn't been fully validated yet, the driver only sets 1.8v [enable] + 3.3v [disable] for 1.8v mode 1.8v [disable] + 3.3v [enable] for 3.3v mode There is not register order requirement which has been cleared by our IC team. For future reference the full usage matrix including the 2.5V setting is: case V33 V25 V18 result 0 0 0 0 IO safe, but cannot work 1 0 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 2 0 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 3 0 1 1 Invalid state, should avoid 4 1 0 0 IO require 3.3V, should < 3.63V, otherwise IO may damage 5 1 0 1 IO require 1.8V, should < 1.98V, otherwise IO may damage 6 1 1 0 IO require 2.5V, should < 2.75V, otherwise IO may damage 7 1 1 1 Invalid state, should avoid Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Tested-by: Peter Geis <pgwipeout@gmail.com> [added mode clarification from Jay] Link: https://lore.kernel.org/r/20210805120107.27007-3-michael.riesch@wolfvision.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2021-08-05 14:01:02 +02:00
ret = iod->write(supply, uV);
PM / AVS: rockchip-io: add driver handling Rockchip io domains IO domain voltages on some Rockchip SoCs are variable but need to be kept in sync between the regulators and the SoC using a special register. A specific example using rk3288: - If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then bit 7 of GRF_IO_VSEL needs to be 0. If the regulator hooked up to that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1. Said another way, this driver simply handles keeping bits in the SoC's general register file (GRF) in sync with the actual value of a voltage hooked up to the pins. Note that this driver specifically doesn't include: - any logic for deciding what voltage we should set regulators to - any logic for deciding whether regulators (or internal SoC blocks) should have power or not have power If there were some other software that had the smarts of making decisions about regulators, it would work in conjunction with this driver. When that other software adjusted a regulator's voltage then this driver would handle telling the SoC about it. A good example is vqmmc for SD. In that case the dw_mmc driver simply is told about a regulator. It changes the regulator between 3.3V and 1.8V at the right time. This driver notices the change and makes sure that the SoC is on the same page. Signed-off-by: Heiko Stübner <heiko@sntech.de> Signed-off-by: Doug Anderson <dianders@chromium.org> Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> [khilman: fix compiler warnings] Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-11 15:48:55 -07:00
if (ret) {
supply->reg = NULL;
goto unreg_notify;
}
/* register regulator notifier */
ret = regulator_register_notifier(reg, &supply->nb);
if (ret) {
dev_err(&pdev->dev,
"regulator notifier request failed\n");
supply->reg = NULL;
goto unreg_notify;
}
}
if (iod->soc_data->init)
iod->soc_data->init(iod);
return 0;
unreg_notify:
for (i = MAX_SUPPLIES - 1; i >= 0; i--) {
struct rockchip_iodomain_supply *io_supply = &iod->supplies[i];
if (io_supply->reg)
regulator_unregister_notifier(io_supply->reg,
&io_supply->nb);
}
return ret;
}
static int rockchip_iodomain_remove(struct platform_device *pdev)
{
struct rockchip_iodomain *iod = platform_get_drvdata(pdev);
int i;
for (i = MAX_SUPPLIES - 1; i >= 0; i--) {
struct rockchip_iodomain_supply *io_supply = &iod->supplies[i];
if (io_supply->reg)
regulator_unregister_notifier(io_supply->reg,
&io_supply->nb);
}
return 0;
}
static struct platform_driver rockchip_iodomain_driver = {
.probe = rockchip_iodomain_probe,
.remove = rockchip_iodomain_remove,
.driver = {
.name = "rockchip-iodomain",
.of_match_table = rockchip_iodomain_match,
},
};
module_platform_driver(rockchip_iodomain_driver);
MODULE_DESCRIPTION("Rockchip IO-domain driver");
MODULE_AUTHOR("Heiko Stuebner <heiko@sntech.de>");
MODULE_AUTHOR("Doug Anderson <dianders@chromium.org>");
MODULE_LICENSE("GPL v2");
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