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linux/drivers/phy/amlogic/phy-meson-axg-mipi-pcie-analog.c

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phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
// SPDX-License-Identifier: GPL-2.0
/*
* Amlogic AXG MIPI + PCIE analog PHY driver
*
* Copyright (C) 2019 Remi Pommarel <repk@triplefau.lt>
*/
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
#include <linux/bitfield.h>
#include <linux/bitops.h>
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
#include <linux/module.h>
#include <linux/phy/phy.h>
#include <linux/regmap.h>
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
#include <linux/delay.h>
#include <linux/mfd/syscon.h>
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
#include <linux/platform_device.h>
#include <dt-bindings/phy/phy.h>
#define HHI_MIPI_CNTL0 0x00
#define HHI_MIPI_CNTL0_COMMON_BLOCK GENMASK(31, 28)
#define HHI_MIPI_CNTL0_ENABLE BIT(29)
#define HHI_MIPI_CNTL0_BANDGAP BIT(26)
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
#define HHI_MIPI_CNTL0_DIF_REF_CTL1 GENMASK(25, 16)
#define HHI_MIPI_CNTL0_DIF_REF_CTL0 GENMASK(15, 0)
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
#define HHI_MIPI_CNTL1 0x04
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
#define HHI_MIPI_CNTL1_CH0_CML_PDR_EN BIT(12)
#define HHI_MIPI_CNTL1_LP_ABILITY GENMASK(5, 4)
#define HHI_MIPI_CNTL1_LP_RESISTER BIT(3)
#define HHI_MIPI_CNTL1_INPUT_SETTING BIT(2)
#define HHI_MIPI_CNTL1_INPUT_SEL BIT(1)
#define HHI_MIPI_CNTL1_PRBS7_EN BIT(0)
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
#define HHI_MIPI_CNTL2 0x08
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
#define HHI_MIPI_CNTL2_CH_PU GENMASK(31, 25)
#define HHI_MIPI_CNTL2_CH_CTL GENMASK(24, 19)
#define HHI_MIPI_CNTL2_CH0_DIGDR_EN BIT(18)
#define HHI_MIPI_CNTL2_CH_DIGDR_EN BIT(17)
#define HHI_MIPI_CNTL2_LPULPS_EN BIT(16)
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
#define HHI_MIPI_CNTL2_CH_EN GENMASK(15, 11)
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
#define HHI_MIPI_CNTL2_CH0_LP_CTL GENMASK(10, 1)
phy: amlogic: meson-axg-mipi-pcie-analog: replace DSI_LANE definitions with BIT() macro For consistency, replace DSI_LANE definitions with BIT() macro and remove the unused DSI_LANE_MASK definition. Suggested-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://lore.kernel.org/r/20201120150347.3914901-1-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-20 16:03:47 +01:00
#define DSI_LANE_0 BIT(4)
#define DSI_LANE_1 BIT(3)
#define DSI_LANE_CLK BIT(2)
#define DSI_LANE_2 BIT(1)
#define DSI_LANE_3 BIT(0)
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
struct phy_axg_mipi_pcie_analog_priv {
struct phy *phy;
struct regmap *regmap;
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
bool dsi_configured;
bool dsi_enabled;
bool powered;
struct phy_configure_opts_mipi_dphy config;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
};
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
static void phy_bandgap_enable(struct phy_axg_mipi_pcie_analog_priv *priv)
{
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
HHI_MIPI_CNTL0_BANDGAP, HHI_MIPI_CNTL0_BANDGAP);
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
HHI_MIPI_CNTL0_ENABLE, HHI_MIPI_CNTL0_ENABLE);
}
static void phy_bandgap_disable(struct phy_axg_mipi_pcie_analog_priv *priv)
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
{
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
HHI_MIPI_CNTL0_BANDGAP, 0);
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
HHI_MIPI_CNTL0_ENABLE, 0);
}
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
static void phy_dsi_analog_enable(struct phy_axg_mipi_pcie_analog_priv *priv)
{
u32 reg;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
HHI_MIPI_CNTL0_DIF_REF_CTL1,
FIELD_PREP(HHI_MIPI_CNTL0_DIF_REF_CTL1, 0x1b8));
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
BIT(31), BIT(31));
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
HHI_MIPI_CNTL0_DIF_REF_CTL0,
FIELD_PREP(HHI_MIPI_CNTL0_DIF_REF_CTL0, 0x8));
regmap_write(priv->regmap, HHI_MIPI_CNTL1, 0x001e);
regmap_write(priv->regmap, HHI_MIPI_CNTL2,
(0x26e0 << 16) | (0x459 << 0));
reg = DSI_LANE_CLK;
switch (priv->config.lanes) {
case 4:
reg |= DSI_LANE_3;
fallthrough;
case 3:
reg |= DSI_LANE_2;
fallthrough;
case 2:
reg |= DSI_LANE_1;
fallthrough;
case 1:
reg |= DSI_LANE_0;
break;
default:
reg = 0;
}
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL2,
HHI_MIPI_CNTL2_CH_EN,
FIELD_PREP(HHI_MIPI_CNTL2_CH_EN, reg));
priv->dsi_enabled = true;
}
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
static void phy_dsi_analog_disable(struct phy_axg_mipi_pcie_analog_priv *priv)
{
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
HHI_MIPI_CNTL0_DIF_REF_CTL1,
FIELD_PREP(HHI_MIPI_CNTL0_DIF_REF_CTL1, 0));
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0, BIT(31), 0);
regmap_update_bits(priv->regmap, HHI_MIPI_CNTL0,
HHI_MIPI_CNTL0_DIF_REF_CTL1, 0);
regmap_write(priv->regmap, HHI_MIPI_CNTL1, 0x6);
regmap_write(priv->regmap, HHI_MIPI_CNTL2, 0x00200000);
priv->dsi_enabled = false;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
}
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
static int phy_axg_mipi_pcie_analog_configure(struct phy *phy,
union phy_configure_opts *opts)
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
{
struct phy_axg_mipi_pcie_analog_priv *priv = phy_get_drvdata(phy);
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
int ret;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy);
if (ret)
return ret;
memcpy(&priv->config, opts, sizeof(priv->config));
priv->dsi_configured = true;
/* If PHY was already powered on, setup the DSI analog part */
if (priv->powered) {
/* If reconfiguring, disable & reconfigure */
if (priv->dsi_enabled)
phy_dsi_analog_disable(priv);
usleep_range(100, 200);
phy_dsi_analog_enable(priv);
}
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
return 0;
}
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
static int phy_axg_mipi_pcie_analog_power_on(struct phy *phy)
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
{
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
struct phy_axg_mipi_pcie_analog_priv *priv = phy_get_drvdata(phy);
phy_bandgap_enable(priv);
if (priv->dsi_configured)
phy_dsi_analog_enable(priv);
priv->powered = true;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
return 0;
}
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
static int phy_axg_mipi_pcie_analog_power_off(struct phy *phy)
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
{
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
struct phy_axg_mipi_pcie_analog_priv *priv = phy_get_drvdata(phy);
phy_bandgap_disable(priv);
if (priv->dsi_enabled)
phy_dsi_analog_disable(priv);
priv->powered = false;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
return 0;
}
static const struct phy_ops phy_axg_mipi_pcie_analog_ops = {
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
.configure = phy_axg_mipi_pcie_analog_configure,
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
.power_on = phy_axg_mipi_pcie_analog_power_on,
.power_off = phy_axg_mipi_pcie_analog_power_off,
.owner = THIS_MODULE,
};
static int phy_axg_mipi_pcie_analog_probe(struct platform_device *pdev)
{
struct phy_provider *phy;
struct device *dev = &pdev->dev;
struct phy_axg_mipi_pcie_analog_priv *priv;
phy: amlogic: phy-meson-axg-mipi-pcie-analog: Hold reference returned by of_get_parent() As the of_get_parent() will increase the refcount of the node->parent and the reference will be discarded, so we should hold the reference with which we can decrease the refcount when done. Fixes: 8eff8b4e22d9 ("phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog") Signed-off-by: Liang He <windhl@126.com> Link: https://lore.kernel.org/r/20220915093506.4009456-1-windhl@126.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-15 17:35:06 +08:00
struct device_node *np = dev->of_node, *parent_np;
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
struct regmap *map;
int ret;
priv = devm_kmalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
/* Get the hhi system controller node */
phy: amlogic: phy-meson-axg-mipi-pcie-analog: Hold reference returned by of_get_parent() As the of_get_parent() will increase the refcount of the node->parent and the reference will be discarded, so we should hold the reference with which we can decrease the refcount when done. Fixes: 8eff8b4e22d9 ("phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog") Signed-off-by: Liang He <windhl@126.com> Link: https://lore.kernel.org/r/20220915093506.4009456-1-windhl@126.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-09-15 17:35:06 +08:00
parent_np = of_get_parent(dev->of_node);
map = syscon_node_to_regmap(parent_np);
of_node_put(parent_np);
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
if (IS_ERR(map)) {
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
dev_err(dev,
"failed to get HHI regmap\n");
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
return PTR_ERR(map);
}
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
priv->regmap = map;
priv->phy = devm_phy_create(dev, np, &phy_axg_mipi_pcie_analog_ops);
if (IS_ERR(priv->phy)) {
ret = PTR_ERR(priv->phy);
if (ret != -EPROBE_DEFER)
dev_err(dev, "failed to create PHY\n");
return ret;
}
phy_set_drvdata(priv->phy, priv);
dev_set_drvdata(dev, priv);
phy: amlogic: phy-meson-axg-mipi-pcie-analog: add support for MIPI DSI analog The AXG Analog MIPI-DSI PHY also provides functions to the PCIe PHY, thus we need to have inclusive support for both interfaces at runtime. This fixes the regmap get from parent node, removes cell param to select a mode and implement runtime configuration & power on/off for both functions since they are not exclusive. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Remi Pommarel <repk@triplefau.lt> Link: https://lore.kernel.org/r/20201116101647.73448-4-narmstrong@baylibre.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-11-16 11:16:47 +01:00
phy = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
phy: amlogic: Add Amlogic AXG MIPI/PCIE analog PHY Driver This adds support for the MIPI analog PHY which is also used for PCIE found in the Amlogic AXG SoC Family. MIPI or PCIE selection is done by the #phy-cells, making the mode static and exclusive. For now only PCIE functionality is supported. This PHY will be used to replace the mipi_enable clock gating logic which was mistakenly added in the clock subsystem. This also activates a non documented band gap bit in those registers that allows reliable PCIE clock signal generation on AXG platforms. Signed-off-by: Remi Pommarel <repk@triplefau.lt> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Jerome Brunet <jbrunet@baylibre.com>
2020-01-24 00:29:41 +01:00
return PTR_ERR_OR_ZERO(phy);
}
static const struct of_device_id phy_axg_mipi_pcie_analog_of_match[] = {
{
.compatible = "amlogic,axg-mipi-pcie-analog-phy",
},
{ },
};
MODULE_DEVICE_TABLE(of, phy_axg_mipi_pcie_analog_of_match);
static struct platform_driver phy_axg_mipi_pcie_analog_driver = {
.probe = phy_axg_mipi_pcie_analog_probe,
.driver = {
.name = "phy-axg-mipi-pcie-analog",
.of_match_table = phy_axg_mipi_pcie_analog_of_match,
},
};
module_platform_driver(phy_axg_mipi_pcie_analog_driver);
MODULE_AUTHOR("Remi Pommarel <repk@triplefau.lt>");
MODULE_DESCRIPTION("Amlogic AXG MIPI + PCIE analog PHY driver");
MODULE_LICENSE("GPL v2");
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