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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Paul Walmsley , Palmer Dabbelt , Albert Ou , Emil Renner Berthing , Romain Gantois , Jisheng Zhang , "Jan Petrous (OSS)" , =?utf-8?b?Q2zDqW1lbnQgTMOp?= =?utf-8?b?Z2Vy?= , Simon Horman , Furong Xu <0x1207@gmail.com>, Serge Semin , Lothar Rubusch , Suraj Jaiswal , Joe Hattori , Bartosz Golaszewski , Giuseppe Cavallaro , Jose Abreu Cc: Inochi Amaoto , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li Subject: [PATCH net-next v4 3/3] net: stmmac: Add glue layer for Sophgo SG2044 SoC Date: Sun, 9 Feb 2025 09:30:52 +0800 Message-ID: <20250209013054.816580-4-inochiama@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250209013054.816580-1-inochiama@gmail.com> References: <20250209013054.816580-1-inochiama@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Adds Sophgo dwmac driver support on the Sophgo SG2044 SoC. Signed-off-by: Inochi Amaoto --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../ethernet/stmicro/stmmac/dwmac-sophgo.c | 105 ++++++++++++++++++ 3 files changed, 117 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 4cc85a36a1ab..b6ff51e1ebce 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -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) diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index b26f0e79c2b3..594883fb4164 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -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 diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c new file mode 100644 index 000000000000..a4997cc0294a --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Sophgo DWMAC platform driver + * + * Copyright (C) 2024 Inochi Amaoto + */ + +#include +#include +#include +#include + +#include "stmmac_platform.h" + +struct sophgo_dwmac { + struct device *dev; + struct clk *clk_tx; +}; + +static void sophgo_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode) +{ + struct sophgo_dwmac *dwmac = priv; + long rate; + int ret; + + rate = rgmii_clock(speed); + if (rate < 0) { + dev_err(dwmac->dev, "invalid speed %u\n", speed); + return; + } + + ret = clk_set_rate(dwmac->clk_tx, rate); + if (ret) + dev_err(dwmac->dev, "failed to set tx rate %lu: %pe\n", + rate, ERR_PTR(ret)); +} + +static int sophgo_sg2044_dwmac_init(struct platform_device *pdev, + struct plat_stmmacenet_data *plat_dat, + struct stmmac_resources *stmmac_res) +{ + struct sophgo_dwmac *dwmac; + + 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), + "failed to get tx clock\n"); + + dwmac->dev = &pdev->dev; + plat_dat->bsp_priv = dwmac; + plat_dat->flags |= STMMAC_FLAG_SPH_DISABLE; + plat_dat->fix_mac_speed = sophgo_dwmac_fix_mac_speed; + 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; + int ret; + + ret = stmmac_get_platform_resources(pdev, &stmmac_res); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "failed to get resources\n"); + + plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat), + "dt configuration failed\n"); + + ret = sophgo_sg2044_dwmac_init(pdev, plat_dat, &stmmac_res); + if (ret) + return ret; + + return stmmac_dvr_probe(&pdev->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 "); +MODULE_DESCRIPTION("Sophgo DWMAC platform driver"); +MODULE_LICENSE("GPL");