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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Hi Yanhong, On Fri, 2023-01-06 at 10:59 +0800, Yanhong Wang wrote: > This adds StarFive dwmac driver support on the StarFive JH7110 SoCs. > > Signed-off-by: Yanhong Wang > Co-developed-by: Emil Renner Berthing > Signed-off-by: Emil Renner Berthing > --- > MAINTAINERS | 1 + > drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++ > drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + > .../stmicro/stmmac/dwmac-starfive-plat.c | 123 > ++++++++++++++++++ > 4 files changed, 137 insertions(+) > create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac- > starfive-plat.c > > > > 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..910095b10fe4 > --- /dev/null > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c > @@ -0,0 +1,123 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * StarFive DWMAC platform driver > + * > + * Copyright(C) 2022 StarFive Technology Co., Ltd. > + * > + */ > + > +#include Blank line between header with < > and " " > +#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; > + > + 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); > + return; Do we need to return value, since it is invalid speed. But the return value of function is void. > + } > + > + 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 (*syscon_init)(struct device *dev); Reverse christmas tree. > + 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; > + > + syscon_init = of_device_get_match_data(&pdev->dev); > + if (syscon_init) { > + err = syscon_init(&pdev->dev); > + if (err) > + return err; > + } > + > + 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; > +} > + _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv