Commit a22221ef authored by Inochi Amaoto's avatar Inochi Amaoto Committed by Jakub Kicinski
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net: stmmac: Add glue layer for Sophgo SG2044 SoC 



Adds Sophgo dwmac driver support on the Sophgo SG2044 SoC.

Signed-off-by: default avatarInochi Amaoto <inochiama@gmail.com>
Reviewed-by: default avatarRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20250307011623.440792-5-inochiama@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 9ef17caf

drivers/net/ethernet/stmicro/stmmac/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -181,6 +181,17 @@ config DWMAC_SOCFPGA 
	  for the stmmac device driver. This driver is used for

	  arria5 and cyclone5 FPGA SoCs.



config DWMAC_SOPHGO

	tristate "Sophgo dwmac support"

	depends on OF && (ARCH_SOPHGO || COMPILE_TEST)

	default m if ARCH_SOPHGO

	help

	  Support for ethernet controllers on Sophgo RISC-V SoCs



	  This selects the Sophgo SoC specific glue layer support

	  for the stmmac device driver. This driver is used for the

	  ethernet controllers on various Sophgo SoCs.



config DWMAC_STARFIVE

	tristate "StarFive dwmac support"

	depends on OF && (ARCH_STARFIVE || COMPILE_TEST)

drivers/net/ethernet/stmicro/stmmac/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o 
obj-$(CONFIG_DWMAC_RZN1)	+= dwmac-rzn1.o

obj-$(CONFIG_DWMAC_S32)		+= dwmac-s32.o

obj-$(CONFIG_DWMAC_SOCFPGA)	+= dwmac-altr-socfpga.o

obj-$(CONFIG_DWMAC_SOPHGO)	+= dwmac-sophgo.o

obj-$(CONFIG_DWMAC_STARFIVE)	+= dwmac-starfive.o

obj-$(CONFIG_DWMAC_STI)		+= dwmac-sti.o

obj-$(CONFIG_DWMAC_STM32)	+= dwmac-stm32.o

drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c

0 → 100644
+75 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+

/*

 * Sophgo DWMAC platform driver

 *

 * Copyright (C) 2024 Inochi Amaoto <inochiama@gmail.com>

 */



#include <linux/clk.h>

#include <linux/module.h>

#include <linux/mod_devicetable.h>

#include <linux/platform_device.h>



#include "stmmac_platform.h"



static int sophgo_sg2044_dwmac_init(struct platform_device *pdev,

				    struct plat_stmmacenet_data *plat_dat,

				    struct stmmac_resources *stmmac_res)

{

	plat_dat->clk_tx_i = devm_clk_get_enabled(&pdev->dev, "tx");

	if (IS_ERR(plat_dat->clk_tx_i))

		return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat->clk_tx_i),

				     "failed to get tx clock\n");



	plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE;

	plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate;

	plat_dat->multicast_filter_bins = 0;

	plat_dat->unicast_filter_entries = 1;



	return 0;

}



static int sophgo_dwmac_probe(struct platform_device *pdev)

{

	struct plat_stmmacenet_data *plat_dat;

	struct stmmac_resources stmmac_res;

	struct device *dev = &pdev->dev;

	int ret;



	ret = stmmac_get_platform_resources(pdev, &stmmac_res);

	if (ret)

		return dev_err_probe(dev, ret,

				     "failed to get platform resources\n");



	plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac);

	if (IS_ERR(plat_dat))

		return dev_err_probe(dev, PTR_ERR(plat_dat),

				     "failed to parse DT parameters\n");



	ret = sophgo_sg2044_dwmac_init(pdev, plat_dat, &stmmac_res);

	if (ret)

		return ret;



	return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);

}



static const struct of_device_id sophgo_dwmac_match[] = {

	{ .compatible = "sophgo,sg2044-dwmac" },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, sophgo_dwmac_match);



static struct platform_driver sophgo_dwmac_driver = {

	.probe  = sophgo_dwmac_probe,

	.remove = stmmac_pltfr_remove,

	.driver = {

		.name = "sophgo-dwmac",

		.pm = &stmmac_pltfr_pm_ops,

		.of_match_table = sophgo_dwmac_match,

	},

};

module_platform_driver(sophgo_dwmac_driver);



MODULE_AUTHOR("Inochi Amaoto <inochiama@gmail.com>");

MODULE_DESCRIPTION("Sophgo DWMAC platform driver");

MODULE_LICENSE("GPL");