+++ /dev/null
-From 20fa98c6230f05d5c70023828079858437cea919 Mon Sep 17 00:00:00 2001
-From: Samin Guo <samin.guo@starfivetech.com>
-Date: Mon, 17 Apr 2023 18:02:50 +0800
-Subject: [PATCH 47/95] net: stmmac: Add glue layer for StarFive JH7110 SoC
-
-This adds StarFive dwmac driver support on the StarFive JH7110 SoC.
-
-Tested-by: Tommaso Merciai <tomm.merciai@gmail.com>
-Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
-Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
-Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
----
- drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++
- drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
- .../ethernet/stmicro/stmmac/dwmac-starfive.c | 123 ++++++++++++++++++
- 3 files changed, 136 insertions(+)
- create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
-
-diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
-index 31ff35174034..b5e95e6fc4a4 100644
---- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
-+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
-@@ -165,6 +165,18 @@ config DWMAC_SOCFPGA
- for the stmmac device driver. This driver is used for
- arria5 and cyclone5 FPGA SoCs.
-
-+config DWMAC_STARFIVE
-+ tristate "StarFive dwmac support"
-+ depends on OF && (ARCH_STARFIVE || COMPILE_TEST)
-+ select MFD_SYSCON
-+ default m if ARCH_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_STI
- tristate "STi GMAC support"
- default ARCH_STI
-diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
-index d4e12e9ace4f..09e3c141c2a1 100644
---- a/drivers/net/ethernet/stmicro/stmmac/Makefile
-+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
-@@ -23,6 +23,7 @@ obj-$(CONFIG_DWMAC_OXNAS) += dwmac-oxnas.o
- obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o
- obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o
- obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o
-+obj-$(CONFIG_DWMAC_STARFIVE) += dwmac-starfive.o
- obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o
- obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o
- obj-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o
-diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
-new file mode 100644
-index 000000000000..4963d4008485
---- /dev/null
-+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
-@@ -0,0 +1,123 @@
-+// SPDX-License-Identifier: GPL-2.0+
-+/*
-+ * StarFive DWMAC platform driver
-+ *
-+ * Copyright (C) 2021 Emil Renner Berthing <kernel@esmil.dk>
-+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
-+ *
-+ */
-+
-+#include <linux/mfd/syscon.h>
-+#include <linux/of_device.h>
-+#include <linux/regmap.h>
-+
-+#include "stmmac_platform.h"
-+
-+struct starfive_dwmac {
-+ struct device *dev;
-+ struct clk *clk_tx;
-+};
-+
-+static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed)
-+{
-+ struct starfive_dwmac *dwmac = priv;
-+ unsigned long rate;
-+ int err;
-+
-+ rate = clk_get_rate(dwmac->clk_tx);
-+
-+ 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_tx, rate);
-+ if (err)
-+ dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate);
-+}
-+
-+static int starfive_dwmac_probe(struct platform_device *pdev)
-+{
-+ struct plat_stmmacenet_data *plat_dat;
-+ struct stmmac_resources stmmac_res;
-+ struct starfive_dwmac *dwmac;
-+ struct clk *clk_gtx;
-+ int err;
-+
-+ err = stmmac_get_platform_resources(pdev, &stmmac_res);
-+ if (err)
-+ return dev_err_probe(&pdev->dev, err,
-+ "failed to get resources\n");
-+
-+ plat_dat = 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");
-+
-+ 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");
-+
-+ clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx");
-+ if (IS_ERR(clk_gtx))
-+ return dev_err_probe(&pdev->dev, PTR_ERR(clk_gtx),
-+ "error getting gtx clock\n");
-+
-+ /* Generally, the rgmii_tx clock is provided by the internal clock,
-+ * which needs to match the corresponding clock frequency according
-+ * to different speeds. If the rgmii_tx clock is provided by the
-+ * external rgmii_rxin, there is no need to configure the clock
-+ * internally, because rgmii_rxin will be adaptively adjusted.
-+ */
-+ if (!device_property_read_bool(&pdev->dev, "starfive,tx-use-rgmii-clk"))
-+ plat_dat->fix_mac_speed = starfive_dwmac_fix_mac_speed;
-+
-+ dwmac->dev = &pdev->dev;
-+ 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_dwmac_match[] = {
-+ { .compatible = "starfive,jh7110-dwmac" },
-+ { /* sentinel */ }
-+};
-+MODULE_DEVICE_TABLE(of, starfive_dwmac_match);
-+
-+static struct platform_driver starfive_dwmac_driver = {
-+ .probe = starfive_dwmac_probe,
-+ .remove = stmmac_pltfr_remove,
-+ .driver = {
-+ .name = "starfive-dwmac",
-+ .pm = &stmmac_pltfr_pm_ops,
-+ .of_match_table = starfive_dwmac_match,
-+ },
-+};
-+module_platform_driver(starfive_dwmac_driver);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_DESCRIPTION("StarFive DWMAC platform driver");
-+MODULE_AUTHOR("Emil Renner Berthing <kernel@esmil.dk>");
-+MODULE_AUTHOR("Samin Guo <samin.guo@starfivetech.com>");
---
-2.20.1
-
projects / openwrt / staging / wigyori.git / blobdiff