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net: stmmac: dwmac-starfive: Add support for JH7100 SoC

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Add a missing quirk to enable support for the StarFive JH7100 SoC.

Additionally, for greater flexibility in operation, allow using the
rgmii-rxid and rgmii-txid phy modes.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cristian Ciocaltea 2024-01-26 21:21:26 +02:00 committed by David S. Miller
parent 53e41b76a8
commit 8d4597b871
2 changed files with 31 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/ethernet/stmicro/stmmac/Kconfig
View File

@ -165,9 +165,9 @@ config DWMAC_STARFIVE
help
Support for ethernet controllers on StarFive RISC-V SoCs
This selects the StarFive platform specific glue layer support for
the stmmac device driver. This driver is used for StarFive JH7110
ethernet controller.
This selects the StarFive platform specific glue layer support
for the stmmac device driver. This driver is used for the
StarFive JH7100 and JH7110 ethernet controllers.
config DWMAC_STI
tristate "STi GMAC support"

32
drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
View File

@ -15,13 +15,20 @@
#include "stmmac_platform.h"
#define STARFIVE_DWMAC_PHY_INFT_RGMII 0x1
#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4
#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U
#define STARFIVE_DWMAC_PHY_INFT_RGMII 0x1
#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4
#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U
#define JH7100_SYSMAIN_REGISTER49_DLYCHAIN 0xc8
struct starfive_dwmac_data {
unsigned int gtxclk_dlychain;
};
struct starfive_dwmac {
struct device *dev;
struct clk *clk_tx;
const struct starfive_dwmac_data *data;
};
static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
@ -67,6 +74,8 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
case PHY_INTERFACE_MODE_RGMII_RXID:
case PHY_INTERFACE_MODE_RGMII_TXID:
mode = STARFIVE_DWMAC_PHY_INFT_RGMII;
break;
@ -89,6 +98,14 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
if (err)
return dev_err_probe(dwmac->dev, err, "error setting phy mode\n");
if (dwmac->data) {
err = regmap_write(regmap, JH7100_SYSMAIN_REGISTER49_DLYCHAIN,
dwmac->data->gtxclk_dlychain);
if (err)
return dev_err_probe(dwmac->dev, err,
"error selecting gtxclk delay chain\n");
}
return 0;
}
@ -114,6 +131,8 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
if (!dwmac)
return -ENOMEM;
dwmac->data = device_get_match_data(&pdev->dev);
dwmac->clk_tx = devm_clk_get_enabled(&pdev->dev, "tx");
if (IS_ERR(dwmac->clk_tx))
return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_tx),
@ -144,8 +163,13 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
}
static const struct starfive_dwmac_data jh7100_data = {
.gtxclk_dlychain = 4,
};
static const struct of_device_id starfive_dwmac_match[] = {
{ .compatible = "starfive,jh7110-dwmac" },
{ .compatible = "starfive,jh7100-dwmac", .data = &jh7100_data },
{ .compatible = "starfive,jh7110-dwmac" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, starfive_dwmac_match);