This adds StarFive dwmac driver support on the StarFive JH7110 SoCs.
Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
---
MAINTAINERS | 1 +
drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++
drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
.../stmicro/stmmac/dwmac-starfive-plat.c | 118 ++++++++++++++++++
4 files changed, 132 insertions(+)
create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 56be59bb09f7..5b50b52d3dbb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19609,6 +19609,7 @@ F: include/dt-bindings/clock/starfive*
STARFIVE DWMAC GLUE LAYER
M: Yanhong Wang <yanhong.wang@starfivetech.com>
S: Maintained
+F: Documentation/devicetree/bindings/net/dwmac-starfive-plat.c
F: Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
STARFIVE PINCTRL DRIVER
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 31ff35174034..f9a4ad4abd54 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -235,6 +235,18 @@ config DWMAC_INTEL_PLAT
the stmmac device driver. This driver is used for the Intel Keem Bay
SoC.
+config DWMAC_STARFIVE_PLAT
+ tristate "StarFive dwmac support"
+ depends on OF && COMMON_CLK
+ depends on STMMAC_ETH
+ default SOC_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.
+
config DWMAC_VISCONTI
tristate "Toshiba Visconti DWMAC support"
default ARCH_VISCONTI
diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
index d4e12e9ace4f..a63ab0ab5071 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
@@ -31,6 +31,7 @@ obj-$(CONFIG_DWMAC_DWC_QOS_ETH) += dwmac-dwc-qos-eth.o
obj-$(CONFIG_DWMAC_INTEL_PLAT) += dwmac-intel-plat.o
obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
obj-$(CONFIG_DWMAC_IMX8) += dwmac-imx.o
+obj-$(CONFIG_DWMAC_STARFIVE_PLAT) += dwmac-starfive-plat.o
obj-$(CONFIG_DWMAC_VISCONTI) += dwmac-visconti.o
stmmac-platform-objs:= stmmac_platform.o
dwmac-altr-socfpga-objs := altr_tse_pcs.o dwmac-socfpga.o
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
new file mode 100644
index 000000000000..e441d920933a
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * StarFive DWMAC platform driver
+ *
+ * Copyright(C) 2022 StarFive Technology Co., Ltd.
+ *
+ */
+
+#include <linux/of_device.h>
+
+#include "stmmac_platform.h"
+
+struct starfive_dwmac {
+ struct device *dev;
+ struct clk *clk_tx;
+ struct clk *clk_gtx;
+ struct clk *clk_gtxc;
+};
+
+static void starfive_eth_plat_fix_mac_speed(void *priv, unsigned int speed)
+{
+ struct starfive_dwmac *dwmac = priv;
+ unsigned long rate;
+ int err;
+
+ rate = clk_get_rate(dwmac->clk_gtx);
+
+ switch (speed) {
+ case SPEED_1000:
+ rate = 125000000;
+ break;
+ case SPEED_100:
+ rate = 25000000;
+ break;
+ case SPEED_10:
+ rate = 2500000;
+ break;
+ default:
+ dev_err(dwmac->dev, "invalid speed %u\n", speed);
+ break;
+ }
+
+ err = clk_set_rate(dwmac->clk_gtx, rate);
+ if (err)
+ dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);
+}
+
+static int starfive_eth_plat_probe(struct platform_device *pdev)
+{
+ struct plat_stmmacenet_data *plat_dat;
+ struct stmmac_resources stmmac_res;
+ struct starfive_dwmac *dwmac;
+ int err;
+
+ err = stmmac_get_platform_resources(pdev, &stmmac_res);
+ if (err)
+ return err;
+
+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
+ if (IS_ERR(plat_dat)) {
+ dev_err(&pdev->dev, "dt configuration failed\n");
+ return PTR_ERR(plat_dat);
+ }
+
+ dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+ if (!dwmac)
+ return -ENOMEM;
+
+ 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),
+ "error getting tx clock\n");
+
+ dwmac->clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx");
+ if (IS_ERR(dwmac->clk_gtx))
+ return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtx),
+ "error getting gtx clock\n");
+
+ dwmac->clk_gtxc = devm_clk_get_enabled(&pdev->dev, "gtxc");
+ if (IS_ERR(dwmac->clk_gtxc))
+ return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtxc),
+ "error getting gtxc clock\n");
+
+ dwmac->dev = &pdev->dev;
+ plat_dat->fix_mac_speed = starfive_eth_plat_fix_mac_speed;
+ plat_dat->init = NULL;
+ plat_dat->bsp_priv = dwmac;
+ plat_dat->dma_cfg->dche = true;
+
+ err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ if (err) {
+ stmmac_remove_config_dt(pdev, plat_dat);
+ return err;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id starfive_eth_plat_match[] = {
+ { .compatible = "starfive,jh7110-dwmac" },
+ { }
+};
+
+static struct platform_driver starfive_eth_plat_driver = {
+ .probe = starfive_eth_plat_probe,
+ .remove = stmmac_pltfr_remove,
+ .driver = {
+ .name = "starfive-eth-plat",
+ .pm = &stmmac_pltfr_pm_ops,
+ .of_match_table = starfive_eth_plat_match,
+ },
+};
+
+module_platform_driver(starfive_eth_plat_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("StarFive DWMAC platform driver");
+MODULE_AUTHOR("Yanhong Wang <yanhong.wang@starfivetech.com>");
--
2.17.1On Wed, 18 Jan 2023 at 07:20, Yanhong Wang
<yanhong.wang@starfivetech.com> wrote:
>
> This adds StarFive dwmac driver support on the StarFive JH7110 SoCs.
>
> Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
> Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
> Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
> ---
> MAINTAINERS | 1 +
> drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++
> drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
> .../stmicro/stmmac/dwmac-starfive-plat.c | 118 ++++++++++++++++++
> 4 files changed, 132 insertions(+)
> create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 56be59bb09f7..5b50b52d3dbb 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -19609,6 +19609,7 @@ F: include/dt-bindings/clock/starfive*
> STARFIVE DWMAC GLUE LAYER
> M: Yanhong Wang <yanhong.wang@starfivetech.com>
> S: Maintained
> +F: Documentation/devicetree/bindings/net/dwmac-starfive-plat.c
> F: Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>
> STARFIVE PINCTRL DRIVER
> diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
> index 31ff35174034..f9a4ad4abd54 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
> +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
> @@ -235,6 +235,18 @@ config DWMAC_INTEL_PLAT
> the stmmac device driver. This driver is used for the Intel Keem Bay
> SoC.
>
> +config DWMAC_STARFIVE_PLAT
> + tristate "StarFive dwmac support"
> + depends on OF && COMMON_CLK
> + depends on STMMAC_ETH
> + default SOC_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.
> +
> config DWMAC_VISCONTI
> tristate "Toshiba Visconti DWMAC support"
> default ARCH_VISCONTI
> diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
> index d4e12e9ace4f..a63ab0ab5071 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/Makefile
> +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
> @@ -31,6 +31,7 @@ obj-$(CONFIG_DWMAC_DWC_QOS_ETH) += dwmac-dwc-qos-eth.o
> obj-$(CONFIG_DWMAC_INTEL_PLAT) += dwmac-intel-plat.o
> obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
> obj-$(CONFIG_DWMAC_IMX8) += dwmac-imx.o
> +obj-$(CONFIG_DWMAC_STARFIVE_PLAT) += dwmac-starfive-plat.o
Hi Yanhong,
For the next version could you please drop the _PLAT from the config
symbol and -plat from filename. I know the intel wrapper does the
same, but it's the only one, so lets do like the majority of other
wrappers and not add more different ways of doing things.
> obj-$(CONFIG_DWMAC_VISCONTI) += dwmac-visconti.o
> stmmac-platform-objs:= stmmac_platform.o
> dwmac-altr-socfpga-objs := altr_tse_pcs.o dwmac-socfpga.o
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
> new file mode 100644
> index 000000000000..e441d920933a
> --- /dev/null
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
> @@ -0,0 +1,118 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * StarFive DWMAC platform driver
> + *
> + * Copyright(C) 2022 StarFive Technology Co., Ltd.
> + *
> + */
> +
> +#include <linux/of_device.h>
> +
> +#include "stmmac_platform.h"
> +
> +struct starfive_dwmac {
> + struct device *dev;
> + struct clk *clk_tx;
> + struct clk *clk_gtx;
> + struct clk *clk_gtxc;
> +};
I like this name. For the next version could you also
s/starfive_eth_plat_/starfive_dwmac_/ on the function/struct names
below for consistency.
> +
> +static void starfive_eth_plat_fix_mac_speed(void *priv, unsigned int speed)
> +{
> + struct starfive_dwmac *dwmac = priv;
> + unsigned long rate;
> + int err;
> +
> + rate = clk_get_rate(dwmac->clk_gtx);
> +
> + switch (speed) {
> + case SPEED_1000:
> + rate = 125000000;
> + break;
> + case SPEED_100:
> + rate = 25000000;
> + break;
> + case SPEED_10:
> + rate = 2500000;
> + break;
> + default:
> + dev_err(dwmac->dev, "invalid speed %u\n", speed);
> + break;
> + }
> +
> + err = clk_set_rate(dwmac->clk_gtx, rate);
> + if (err)
> + dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);
> +}
> +
> +static int starfive_eth_plat_probe(struct platform_device *pdev)
> +{
> + struct plat_stmmacenet_data *plat_dat;
> + struct stmmac_resources stmmac_res;
> + struct starfive_dwmac *dwmac;
> + int err;
> +
> + err = stmmac_get_platform_resources(pdev, &stmmac_res);
> + if (err)
> + return err;
> +
> + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
> + if (IS_ERR(plat_dat)) {
> + dev_err(&pdev->dev, "dt configuration failed\n");
> + return PTR_ERR(plat_dat);
> + }
> +
> + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
> + if (!dwmac)
> + return -ENOMEM;
> +
> + 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),
> + "error getting tx clock\n");
> +
> + dwmac->clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx");
> + if (IS_ERR(dwmac->clk_gtx))
> + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtx),
> + "error getting gtx clock\n");
> +
> + dwmac->clk_gtxc = devm_clk_get_enabled(&pdev->dev, "gtxc");
> + if (IS_ERR(dwmac->clk_gtxc))
> + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtxc),
> + "error getting gtxc clock\n");
> +
> + dwmac->dev = &pdev->dev;
> + plat_dat->fix_mac_speed = starfive_eth_plat_fix_mac_speed;
> + plat_dat->init = NULL;
> + plat_dat->bsp_priv = dwmac;
> + plat_dat->dma_cfg->dche = true;
> +
> + err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
> + if (err) {
> + stmmac_remove_config_dt(pdev, plat_dat);
> + return err;
> + }
> +
> + return 0;
> +}
> +
> +static const struct of_device_id starfive_eth_plat_match[] = {
> + { .compatible = "starfive,jh7110-dwmac" },
> + { }
> +};
> +
> +static struct platform_driver starfive_eth_plat_driver = {
> + .probe = starfive_eth_plat_probe,
> + .remove = stmmac_pltfr_remove,
> + .driver = {
> + .name = "starfive-eth-plat",
> + .pm = &stmmac_pltfr_pm_ops,
> + .of_match_table = starfive_eth_plat_match,
> + },
> +};
> +
> +module_platform_driver(starfive_eth_plat_driver);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION("StarFive DWMAC platform driver");
> +MODULE_AUTHOR("Yanhong Wang <yanhong.wang@starfivetech.com>");
> --
> 2.17.1
>
>
> _______________________________________________
> linux-riscv mailing list
> linux-riscv@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv
add samin.guo@starfivetech.com to loop.
On 2023/2/16 18:53, Emil Renner Berthing wrote:
> On Wed, 18 Jan 2023 at 07:20, Yanhong Wang
> <yanhong.wang@starfivetech.com> wrote:
>>
>> This adds StarFive dwmac driver support on the StarFive JH7110 SoCs.
>>
>> Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
>> Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
>> Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
>> ---
>> MAINTAINERS | 1 +
>> drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++
>> drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
>> .../stmicro/stmmac/dwmac-starfive-plat.c | 118 ++++++++++++++++++
>> 4 files changed, 132 insertions(+)
>> create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
>>
>> diff --git a/MAINTAINERS b/MAINTAINERS
>> index 56be59bb09f7..5b50b52d3dbb 100644
>> --- a/MAINTAINERS
>> +++ b/MAINTAINERS
>> @@ -19609,6 +19609,7 @@ F: include/dt-bindings/clock/starfive*
>> STARFIVE DWMAC GLUE LAYER
>> M: Yanhong Wang <yanhong.wang@starfivetech.com>
>> S: Maintained
>> +F: Documentation/devicetree/bindings/net/dwmac-starfive-plat.c
>> F: Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
>>
>> STARFIVE PINCTRL DRIVER
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
>> index 31ff35174034..f9a4ad4abd54 100644
>> --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
>> +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
>> @@ -235,6 +235,18 @@ config DWMAC_INTEL_PLAT
>> the stmmac device driver. This driver is used for the Intel Keem Bay
>> SoC.
>>
>> +config DWMAC_STARFIVE_PLAT
>> + tristate "StarFive dwmac support"
>> + depends on OF && COMMON_CLK
>> + depends on STMMAC_ETH
>> + default SOC_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.
>> +
>> config DWMAC_VISCONTI
>> tristate "Toshiba Visconti DWMAC support"
>> default ARCH_VISCONTI
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
>> index d4e12e9ace4f..a63ab0ab5071 100644
>> --- a/drivers/net/ethernet/stmicro/stmmac/Makefile
>> +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
>> @@ -31,6 +31,7 @@ obj-$(CONFIG_DWMAC_DWC_QOS_ETH) += dwmac-dwc-qos-eth.o
>> obj-$(CONFIG_DWMAC_INTEL_PLAT) += dwmac-intel-plat.o
>> obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
>> obj-$(CONFIG_DWMAC_IMX8) += dwmac-imx.o
>> +obj-$(CONFIG_DWMAC_STARFIVE_PLAT) += dwmac-starfive-plat.o
>
> Hi Yanhong,
>
> For the next version could you please drop the _PLAT from the config
> symbol and -plat from filename. I know the intel wrapper does the
> same, but it's the only one, so lets do like the majority of other
> wrappers and not add more different ways of doing things.
>
Thanks. I will fix.
>> obj-$(CONFIG_DWMAC_VISCONTI) += dwmac-visconti.o
>> stmmac-platform-objs:= stmmac_platform.o
>> dwmac-altr-socfpga-objs := altr_tse_pcs.o dwmac-socfpga.o
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
>> new file mode 100644
>> index 000000000000..e441d920933a
>> --- /dev/null
>> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
>> @@ -0,0 +1,118 @@
>> +// SPDX-License-Identifier: GPL-2.0+
>> +/*
>> + * StarFive DWMAC platform driver
>> + *
>> + * Copyright(C) 2022 StarFive Technology Co., Ltd.
>> + *
>> + */
>> +
>> +#include <linux/of_device.h>
>> +
>> +#include "stmmac_platform.h"
>> +
>> +struct starfive_dwmac {
>> + struct device *dev;
>> + struct clk *clk_tx;
>> + struct clk *clk_gtx;
>> + struct clk *clk_gtxc;
>> +};
>
> I like this name. For the next version could you also
> s/starfive_eth_plat_/starfive_dwmac_/ on the function/struct names
> below for consistency.
>
I will fix.
>> +
>> +static void starfive_eth_plat_fix_mac_speed(void *priv, unsigned int speed)
>> +{
>> + struct starfive_dwmac *dwmac = priv;
>> + unsigned long rate;
>> + int err;
>> +
>> + rate = clk_get_rate(dwmac->clk_gtx);
>> +
>> + switch (speed) {
>> + case SPEED_1000:
>> + rate = 125000000;
>> + break;
>> + case SPEED_100:
>> + rate = 25000000;
>> + break;
>> + case SPEED_10:
>> + rate = 2500000;
>> + break;
>> + default:
>> + dev_err(dwmac->dev, "invalid speed %u\n", speed);
>> + break;
>> + }
>> +
>> + err = clk_set_rate(dwmac->clk_gtx, rate);
>> + if (err)
>> + dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);
>> +}
>> +
>> +static int starfive_eth_plat_probe(struct platform_device *pdev)
>> +{
>> + struct plat_stmmacenet_data *plat_dat;
>> + struct stmmac_resources stmmac_res;
>> + struct starfive_dwmac *dwmac;
>> + int err;
>> +
>> + err = stmmac_get_platform_resources(pdev, &stmmac_res);
>> + if (err)
>> + return err;
>> +
>> + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
>> + if (IS_ERR(plat_dat)) {
>> + dev_err(&pdev->dev, "dt configuration failed\n");
>> + return PTR_ERR(plat_dat);
>> + }
>> +
>> + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
>> + if (!dwmac)
>> + return -ENOMEM;
>> +
>> + 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),
>> + "error getting tx clock\n");
>> +
>> + dwmac->clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx");
>> + if (IS_ERR(dwmac->clk_gtx))
>> + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtx),
>> + "error getting gtx clock\n");
>> +
>> + dwmac->clk_gtxc = devm_clk_get_enabled(&pdev->dev, "gtxc");
>> + if (IS_ERR(dwmac->clk_gtxc))
>> + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtxc),
>> + "error getting gtxc clock\n");
>> +
>> + dwmac->dev = &pdev->dev;
>> + plat_dat->fix_mac_speed = starfive_eth_plat_fix_mac_speed;
>> + plat_dat->init = NULL;
>> + plat_dat->bsp_priv = dwmac;
>> + plat_dat->dma_cfg->dche = true;
>> +
>> + err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
>> + if (err) {
>> + stmmac_remove_config_dt(pdev, plat_dat);
>> + return err;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static const struct of_device_id starfive_eth_plat_match[] = {
>> + { .compatible = "starfive,jh7110-dwmac" },
>> + { }
>> +};
>> +
>> +static struct platform_driver starfive_eth_plat_driver = {
>> + .probe = starfive_eth_plat_probe,
>> + .remove = stmmac_pltfr_remove,
>> + .driver = {
>> + .name = "starfive-eth-plat",
>> + .pm = &stmmac_pltfr_pm_ops,
>> + .of_match_table = starfive_eth_plat_match,
>> + },
>> +};
>> +
>> +module_platform_driver(starfive_eth_plat_driver);
>> +
>> +MODULE_LICENSE("GPL");
>> +MODULE_DESCRIPTION("StarFive DWMAC platform driver");
>> +MODULE_AUTHOR("Yanhong Wang <yanhong.wang@starfivetech.com>");
>> --
>> 2.17.1
>>
>>
>> _______________________________________________
>> linux-riscv mailing list
>> linux-riscv@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-riscv
On Tue, 21 Feb 2023 at 03:27, yanhong wang
<yanhong.wang@starfivetech.com> wrote:
>
> add samin.guo@starfivetech.com to loop.
>
> On 2023/2/16 18:53, Emil Renner Berthing wrote:
> > On Wed, 18 Jan 2023 at 07:20, Yanhong Wang
> > <yanhong.wang@starfivetech.com> wrote:
> >>
> >> This adds StarFive dwmac driver support on the StarFive JH7110 SoCs.
> >>
> >> Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
> >> Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
> >> Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
> >> ---
> >> MAINTAINERS | 1 +
> >> drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++
> >> drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
> >> .../stmicro/stmmac/dwmac-starfive-plat.c | 118 ++++++++++++++++++
> >> 4 files changed, 132 insertions(+)
> >> create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
> >>
> >> diff --git a/MAINTAINERS b/MAINTAINERS
> >> index 56be59bb09f7..5b50b52d3dbb 100644
> >> --- a/MAINTAINERS
> >> +++ b/MAINTAINERS
> >> @@ -19609,6 +19609,7 @@ F: include/dt-bindings/clock/starfive*
> >> STARFIVE DWMAC GLUE LAYER
> >> M: Yanhong Wang <yanhong.wang@starfivetech.com>
> >> S: Maintained
> >> +F: Documentation/devicetree/bindings/net/dwmac-starfive-plat.c
> >> F: Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
> >>
> >> STARFIVE PINCTRL DRIVER
> >> diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
> >> index 31ff35174034..f9a4ad4abd54 100644
> >> --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
> >> +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
> >> @@ -235,6 +235,18 @@ config DWMAC_INTEL_PLAT
> >> the stmmac device driver. This driver is used for the Intel Keem Bay
> >> SoC.
> >>
> >> +config DWMAC_STARFIVE_PLAT
> >> + tristate "StarFive dwmac support"
> >> + depends on OF && COMMON_CLK
> >> + depends on STMMAC_ETH
> >> + default SOC_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.
> >> +
> >> config DWMAC_VISCONTI
> >> tristate "Toshiba Visconti DWMAC support"
> >> default ARCH_VISCONTI
> >> diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
> >> index d4e12e9ace4f..a63ab0ab5071 100644
> >> --- a/drivers/net/ethernet/stmicro/stmmac/Makefile
> >> +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
> >> @@ -31,6 +31,7 @@ obj-$(CONFIG_DWMAC_DWC_QOS_ETH) += dwmac-dwc-qos-eth.o
> >> obj-$(CONFIG_DWMAC_INTEL_PLAT) += dwmac-intel-plat.o
> >> obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
> >> obj-$(CONFIG_DWMAC_IMX8) += dwmac-imx.o
> >> +obj-$(CONFIG_DWMAC_STARFIVE_PLAT) += dwmac-starfive-plat.o
> >
> > Hi Yanhong,
> >
> > For the next version could you please drop the _PLAT from the config
> > symbol and -plat from filename. I know the intel wrapper does the
> > same, but it's the only one, so lets do like the majority of other
> > wrappers and not add more different ways of doing things.
> >
>
> Thanks. I will fix.
>
> >> obj-$(CONFIG_DWMAC_VISCONTI) += dwmac-visconti.o
> >> stmmac-platform-objs:= stmmac_platform.o
> >> dwmac-altr-socfpga-objs := altr_tse_pcs.o dwmac-socfpga.o
> >> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
> >> new file mode 100644
> >> index 000000000000..e441d920933a
> >> --- /dev/null
> >> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c
> >> @@ -0,0 +1,118 @@
> >> +// SPDX-License-Identifier: GPL-2.0+
> >> +/*
> >> + * StarFive DWMAC platform driver
> >> + *
> >> + * Copyright(C) 2022 StarFive Technology Co., Ltd.
> >> + *
> >> + */
> >> +
> >> +#include <linux/of_device.h>
> >> +
> >> +#include "stmmac_platform.h"
> >> +
> >> +struct starfive_dwmac {
> >> + struct device *dev;
> >> + struct clk *clk_tx;
> >> + struct clk *clk_gtx;
> >> + struct clk *clk_gtxc;
> >> +};
> >
> > I like this name. For the next version could you also
> > s/starfive_eth_plat_/starfive_dwmac_/ on the function/struct names
> > below for consistency.
> >
>
> I will fix.
>
> >> +
> >> +static void starfive_eth_plat_fix_mac_speed(void *priv, unsigned int speed)
> >> +{
> >> + struct starfive_dwmac *dwmac = priv;
> >> + unsigned long rate;
> >> + int err;
> >> +
> >> + rate = clk_get_rate(dwmac->clk_gtx);
> >> +
> >> + switch (speed) {
> >> + case SPEED_1000:
> >> + rate = 125000000;
> >> + break;
> >> + case SPEED_100:
> >> + rate = 25000000;
> >> + break;
> >> + case SPEED_10:
> >> + rate = 2500000;
> >> + break;
> >> + default:
> >> + dev_err(dwmac->dev, "invalid speed %u\n", speed);
> >> + break;
> >> + }
> >> +
> >> + err = clk_set_rate(dwmac->clk_gtx, rate);
> >> + if (err)
> >> + dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);
> >> +}
> >> +
> >> +static int starfive_eth_plat_probe(struct platform_device *pdev)
> >> +{
> >> + struct plat_stmmacenet_data *plat_dat;
> >> + struct stmmac_resources stmmac_res;
> >> + struct starfive_dwmac *dwmac;
> >> + int err;
> >> +
> >> + err = stmmac_get_platform_resources(pdev, &stmmac_res);
> >> + if (err)
> >> + return err;
> >> +
> >> + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac);
> >> + if (IS_ERR(plat_dat)) {
> >> + dev_err(&pdev->dev, "dt configuration failed\n");
> >> + return PTR_ERR(plat_dat);
> >> + }
> >> +
> >> + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
> >> + if (!dwmac)
> >> + return -ENOMEM;
> >> +
> >> + 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),
> >> + "error getting tx clock\n");
> >> +
> >> + dwmac->clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx");
> >> + if (IS_ERR(dwmac->clk_gtx))
> >> + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtx),
> >> + "error getting gtx clock\n");
> >> +
> >> + dwmac->clk_gtxc = devm_clk_get_enabled(&pdev->dev, "gtxc");
> >> + if (IS_ERR(dwmac->clk_gtxc))
> >> + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtxc),
> >> + "error getting gtxc clock\n");
> >> +
> >> + dwmac->dev = &pdev->dev;
> >> + plat_dat->fix_mac_speed = starfive_eth_plat_fix_mac_speed;
> >> + plat_dat->init = NULL;
> >> + plat_dat->bsp_priv = dwmac;
> >> + plat_dat->dma_cfg->dche = true;
> >> +
> >> + err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
> >> + if (err) {
> >> + stmmac_remove_config_dt(pdev, plat_dat);
> >> + return err;
> >> + }
> >> +
> >> + return 0;
> >> +}
> >> +
> >> +static const struct of_device_id starfive_eth_plat_match[] = {
> >> + { .compatible = "starfive,jh7110-dwmac" },
> >> + { }
> >> +};
I noticed you're missing a
MODULE_DEVICE_TABLE(of, starfive_dwmac_match);
here, so udev will load the module automatically.
While you're at it I also like the idiom of using { /* sentinel */ }
for the last entry here.
> >> +static struct platform_driver starfive_eth_plat_driver = {
> >> + .probe = starfive_eth_plat_probe,
> >> + .remove = stmmac_pltfr_remove,
> >> + .driver = {
> >> + .name = "starfive-eth-plat",
> >> + .pm = &stmmac_pltfr_pm_ops,
> >> + .of_match_table = starfive_eth_plat_match,
> >> + },
> >> +};
> >> +
> >> +module_platform_driver(starfive_eth_plat_driver);
> >> +
> >> +MODULE_LICENSE("GPL");
> >> +MODULE_DESCRIPTION("StarFive DWMAC platform driver");
> >> +MODULE_AUTHOR("Yanhong Wang <yanhong.wang@starfivetech.com>");
> >> --
> >> 2.17.1
> >>
> >>
> >> _______________________________________________
> >> linux-riscv mailing list
> >> linux-riscv@lists.infradead.org
> >> http://lists.infradead.org/mailman/listinfo/linux-riscv
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