* [PATCH 1/1] net: stmmac: dwmac-starfive: Add support for JH7100 SoC
2023-12-19 23:10 [PATCH 0/1] StarFive DWMAC support for JH7100 Cristian Ciocaltea
@ 2023-12-19 23:10 ` Cristian Ciocaltea
2023-12-19 23:48 ` [PATCH 0/1] StarFive DWMAC support for JH7100 Conor Dooley
1 sibling, 0 replies; 5+ messages in thread
From: Cristian Ciocaltea @ 2023-12-19 23:10 UTC (permalink / raw)
To: Alexandre Torgue, Jose Abreu, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Maxime Coquelin,
Emil Renner Berthing, Samin Guo
Cc: netdev, linux-stm32, linux-arm-kernel, linux-kernel, kernel,
Jacob Keller, Andrew Lunn
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>
---
drivers/net/ethernet/stmicro/stmmac/Kconfig | 6 ++--
.../ethernet/stmicro/stmmac/dwmac-starfive.c | 32 ++++++++++++++++---
2 files changed, 31 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 85dcda51df05..4ec61f1ee71a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -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"
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
index 5d630affb4d1..4e1076faee0c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -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);
--
2.43.0
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH 0/1] StarFive DWMAC support for JH7100
2023-12-19 23:10 [PATCH 0/1] StarFive DWMAC support for JH7100 Cristian Ciocaltea
2023-12-19 23:10 ` [PATCH 1/1] net: stmmac: dwmac-starfive: Add support for JH7100 SoC Cristian Ciocaltea
@ 2023-12-19 23:48 ` Conor Dooley
2023-12-19 23:58 ` Cristian Ciocaltea
1 sibling, 1 reply; 5+ messages in thread
From: Conor Dooley @ 2023-12-19 23:48 UTC (permalink / raw)
To: Cristian Ciocaltea
Cc: Alexandre Torgue, Jose Abreu, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Maxime Coquelin,
Emil Renner Berthing, Samin Guo, netdev, linux-stm32,
linux-arm-kernel, linux-kernel, kernel
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On Wed, Dec 20, 2023 at 01:10:38AM +0200, Cristian Ciocaltea wrote:
> This is just a subset of the initial patch series [1] adding networking
> support for StarFive JH7100 SoC.
>
> [1]: https://lore.kernel.org/lkml/20231218214451.2345691-1-cristian.ciocaltea@collabora.com/
You need to send the binding patch alongside the driver, unless that has
been applied already.
Cheers,
Conor.
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^ permalink raw reply [flat|nested] 5+ messages in thread