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-rw-r--r--Documentation/devicetree/bindings/net/snps,dwmac.yaml17
-rw-r--r--Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml144
-rw-r--r--MAINTAINERS7
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/Kconfig12
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/Makefile1
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c171
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c3
7 files changed, 350 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index da311c1f2c88..363b3e3ea3a6 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -30,6 +30,7 @@ select:
- snps,dwmac-4.10a
- snps,dwmac-4.20a
- snps,dwmac-5.10a
+ - snps,dwmac-5.20
- snps,dwxgmac
- snps,dwxgmac-2.10
@@ -90,8 +91,10 @@ properties:
- snps,dwmac-4.10a
- snps,dwmac-4.20a
- snps,dwmac-5.10a
+ - snps,dwmac-5.20
- snps,dwxgmac
- snps,dwxgmac-2.10
+ - starfive,jh7110-dwmac
reg:
minItems: 1
@@ -134,12 +137,16 @@ properties:
- ptp_ref
resets:
- maxItems: 1
- description:
- MAC Reset signal.
+ minItems: 1
+ items:
+ - description: GMAC stmmaceth reset
+ - description: AHB reset
reset-names:
- const: stmmaceth
+ minItems: 1
+ items:
+ - const: stmmaceth
+ - const: ahb
power-domains:
maxItems: 1
@@ -579,6 +586,7 @@ allOf:
- snps,dwmac-3.50a
- snps,dwmac-4.10a
- snps,dwmac-4.20a
+ - snps,dwmac-5.20
- snps,dwxgmac
- snps,dwxgmac-2.10
- st,spear600-gmac
@@ -636,6 +644,7 @@ allOf:
- snps,dwmac-4.10a
- snps,dwmac-4.20a
- snps,dwmac-5.10a
+ - snps,dwmac-5.20
- snps,dwxgmac
- snps,dwxgmac-2.10
- st,spear600-gmac
diff --git a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
new file mode 100644
index 000000000000..5e7cfbbebce6
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
@@ -0,0 +1,144 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 StarFive Technology Co., Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/starfive,jh7110-dwmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 DWMAC glue layer
+
+maintainers:
+ - Emil Renner Berthing <kernel@esmil.dk>
+ - Samin Guo <samin.guo@starfivetech.com>
+
+select:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - starfive,jh7110-dwmac
+ required:
+ - compatible
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - starfive,jh7110-dwmac
+ - const: snps,dwmac-5.20
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: GMAC main clock
+ - description: GMAC AHB clock
+ - description: PTP clock
+ - description: TX clock
+ - description: GTX clock
+
+ clock-names:
+ items:
+ - const: stmmaceth
+ - const: pclk
+ - const: ptp_ref
+ - const: tx
+ - const: gtx
+
+ interrupts:
+ minItems: 3
+ maxItems: 3
+
+ interrupt-names:
+ minItems: 3
+ maxItems: 3
+
+ resets:
+ items:
+ - description: MAC Reset signal.
+ - description: AHB Reset signal.
+
+ reset-names:
+ items:
+ - const: stmmaceth
+ - const: ahb
+
+ starfive,tx-use-rgmii-clk:
+ description:
+ Tx clock is provided by external rgmii clock.
+ type: boolean
+
+ starfive,syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: phandle to syscon that configures phy mode
+ - description: Offset of phy mode selection
+ - description: Shift of phy mode selection
+ description:
+ A phandle to syscon with two arguments that configure phy mode.
+ The argument one is the offset of phy mode selection, the
+ argument two is the shift of phy mode selection.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+ - interrupt-names
+ - resets
+ - reset-names
+
+allOf:
+ - $ref: snps,dwmac.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ ethernet@16030000 {
+ compatible = "starfive,jh7110-dwmac", "snps,dwmac-5.20";
+ reg = <0x16030000 0x10000>;
+ clocks = <&clk 3>, <&clk 2>, <&clk 109>,
+ <&clk 6>, <&clk 111>;
+ clock-names = "stmmaceth", "pclk", "ptp_ref",
+ "tx", "gtx";
+ resets = <&rst 1>, <&rst 2>;
+ reset-names = "stmmaceth", "ahb";
+ interrupts = <7>, <6>, <5>;
+ interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+ phy-mode = "rgmii-id";
+ snps,multicast-filter-bins = <64>;
+ snps,perfect-filter-entries = <8>;
+ rx-fifo-depth = <2048>;
+ tx-fifo-depth = <2048>;
+ snps,fixed-burst;
+ snps,no-pbl-x8;
+ snps,tso;
+ snps,force_thresh_dma_mode;
+ snps,axi-config = <&stmmac_axi_setup>;
+ snps,en-tx-lpi-clockgating;
+ snps,txpbl = <16>;
+ snps,rxpbl = <16>;
+ starfive,syscon = <&aon_syscon 0xc 0x12>;
+ phy-handle = <&phy0>;
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "snps,dwmac-mdio";
+
+ phy0: ethernet-phy@0 {
+ reg = <0>;
+ };
+ };
+
+ stmmac_axi_setup: stmmac-axi-config {
+ snps,lpi_en;
+ snps,wr_osr_lmt = <4>;
+ snps,rd_osr_lmt = <4>;
+ snps,blen = <256 128 64 32 0 0 0>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 1c09473685b1..4fc57dfd5fd0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19928,6 +19928,13 @@ M: Emil Renner Berthing <kernel@esmil.dk>
S: Maintained
F: arch/riscv/boot/dts/starfive/
+STARFIVE DWMAC GLUE LAYER
+M: Emil Renner Berthing <kernel@esmil.dk>
+M: Samin Guo <samin.guo@starfivetech.com>
+S: Maintained
+F: Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
+F: drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+
STARFIVE JH7100 CLOCK DRIVERS
M: Emil Renner Berthing <kernel@esmil.dk>
S: Maintained
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index f77511fe4e87..5f5a997f21f3 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 057e4bab5c08..8738fdbb4b2d 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..4f51a7889642
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -0,0 +1,171 @@
+// 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"
+
+#define STARFIVE_DWMAC_PHY_INFT_RGMII 0x1
+#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4
+#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U
+
+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_set_mode(struct plat_stmmacenet_data *plat_dat)
+{
+ struct starfive_dwmac *dwmac = plat_dat->bsp_priv;
+ struct regmap *regmap;
+ unsigned int args[2];
+ unsigned int mode;
+ int err;
+
+ switch (plat_dat->interface) {
+ case PHY_INTERFACE_MODE_RMII:
+ mode = STARFIVE_DWMAC_PHY_INFT_RMII;
+ break;
+
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ mode = STARFIVE_DWMAC_PHY_INFT_RGMII;
+ break;
+
+ default:
+ dev_err(dwmac->dev, "unsupported interface %d\n",
+ plat_dat->interface);
+ return -EINVAL;
+ }
+
+ regmap = syscon_regmap_lookup_by_phandle_args(dwmac->dev->of_node,
+ "starfive,syscon",
+ 2, args);
+ if (IS_ERR(regmap))
+ return dev_err_probe(dwmac->dev, PTR_ERR(regmap), "getting the regmap failed\n");
+
+ /* args[0]:offset args[1]: shift */
+ err = regmap_update_bits(regmap, args[0],
+ STARFIVE_DWMAC_PHY_INFT_FIELD << args[1],
+ mode << args[1]);
+ if (err)
+ return dev_err_probe(dwmac->dev, err, "error setting phy mode\n");
+
+ return 0;
+}
+
+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 = starfive_dwmac_set_mode(plat_dat);
+ if (err)
+ return err;
+
+ 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>");
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 067a40fe0a23..eb0b2898daa3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -519,7 +519,8 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
if (of_device_is_compatible(np, "snps,dwmac-4.00") ||
of_device_is_compatible(np, "snps,dwmac-4.10a") ||
of_device_is_compatible(np, "snps,dwmac-4.20a") ||
- of_device_is_compatible(np, "snps,dwmac-5.10a")) {
+ of_device_is_compatible(np, "snps,dwmac-5.10a") ||
+ of_device_is_compatible(np, "snps,dwmac-5.20")) {
plat->has_gmac4 = 1;
plat->has_gmac = 0;
plat->pmt = 1;
generated by cgit v1.2.3 (git 2.39.0) at 2025-05-29 00:02:12 +0300