[PATCH 1/4] GMAC: add driver for Rockchip RK3288 SoCs integrated GMAC

[Roger Chen <roger.chen@rock-chips.com>]

This driver is based on stmmac driver.

Signed-off-by: Roger Chen <roger.chen@rock-chips.com>
---
 drivers/net/ethernet/stmicro/stmmac/Makefile       |    2 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c     |  629 ++++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_platform.c  |    3 +
 .../net/ethernet/stmicro/stmmac/stmmac_platform.h  |    1 +
 4 files changed, 634 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
index ac4d562..73c2715 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
@@ -6,7 +6,7 @@ stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o	\
 
 obj-$(CONFIG_STMMAC_PLATFORM) += stmmac-platform.o
 stmmac-platform-objs:= stmmac_platform.o dwmac-meson.o dwmac-sunxi.o	\
-		       dwmac-sti.o dwmac-socfpga.o
+		       dwmac-sti.o dwmac-socfpga.o dwmac-rk.o
 
 obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
 stmmac-pci-objs:= stmmac_pci.o
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
new file mode 100644
index 0000000..9e50b37
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -0,0 +1,629 @@
+/**
+ * dwmac-rk.c - Rockchip RK3288 DWMAC specific glue layer
+ *
+ * Copyright (C) 2014 Chen-Zhi (Roger Chen)
+ *
+ * Chen-Zhi (Roger Chen)  <roger.chen@rock-chips.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/stmmac.h>
+#include <linux/clk.h>
+#include <linux/phy.h>
+#include <linux/of_net.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/delay.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
+
+struct rk_priv_data {
+	struct platform_device *pdev;
+	int phy_iface;
+	bool power_ctrl_by_pmu;
+	char pmu_regulator[32];
+	int pmu_enable_level;
+
+	int power_io;
+	int power_io_level;
+	int reset_io;
+	int reset_io_level;
+	int phyirq_io;
+	int phyirq_io_level;
+
+	bool clk_enabled;
+	bool clock_input;
+
+	struct clk *clk_mac;
+	struct clk *clk_mac_pll;
+	struct clk *gmac_clkin;
+	struct clk *mac_clk_rx;
+	struct clk *mac_clk_tx;
+	struct clk *clk_mac_ref;
+	struct clk *clk_mac_refout;
+	struct clk *aclk_mac;
+	struct clk *pclk_mac;
+
+	int tx_delay;
+	int rx_delay;
+
+	struct regmap *grf;
+};
+
+#define RK3288_GRF_SOC_CON1 0x0248
+#define RK3288_GRF_SOC_CON3 0x0250
+#define RK3288_GRF_GPIO3D_E 0x01ec
+#define RK3288_GRF_GPIO4A_E 0x01f0
+#define RK3288_GRF_GPIO4B_E 0x01f4
+
+/*RK3288_GRF_SOC_CON1*/
+#define GMAC_PHY_INTF_SEL_RGMII ((0x01C0 << 16) | (0x0040))
+#define GMAC_PHY_INTF_SEL_RMII  ((0x01C0 << 16) | (0x0100))
+#define GMAC_FLOW_CTRL          ((0x0200 << 16) | (0x0200))
+#define GMAC_FLOW_CTRL_CLR      ((0x0200 << 16) | (0x0000))
+#define GMAC_SPEED_10M          ((0x0400 << 16) | (0x0000))
+#define GMAC_SPEED_100M         ((0x0400 << 16) | (0x0400))
+#define GMAC_RMII_CLK_25M       ((0x0800 << 16) | (0x0800))
+#define GMAC_RMII_CLK_2_5M      ((0x0800 << 16) | (0x0000))
+#define GMAC_CLK_125M           ((0x3000 << 16) | (0x0000))
+#define GMAC_CLK_25M            ((0x3000 << 16) | (0x3000))
+#define GMAC_CLK_2_5M           ((0x3000 << 16) | (0x2000))
+#define GMAC_RMII_MODE          ((0x4000 << 16) | (0x4000))
+#define GMAC_RMII_MODE_CLR      ((0x4000 << 16) | (0x0000))
+
+/*RK3288_GRF_SOC_CON3*/
+#define GMAC_TXCLK_DLY_ENABLE   ((0x4000 << 16) | (0x4000))
+#define GMAC_TXCLK_DLY_DISABLE  ((0x4000 << 16) | (0x0000))
+#define GMAC_RXCLK_DLY_ENABLE   ((0x8000 << 16) | (0x8000))
+#define GMAC_RXCLK_DLY_DISABLE  ((0x8000 << 16) | (0x0000))
+#define GMAC_CLK_RX_DL_CFG(val) ((0x3F80 << 16) | (val<<7))
+#define GMAC_CLK_TX_DL_CFG(val) ((0x007F << 16) | (val))
+
+static void set_to_rgmii(struct rk_priv_data *bsp_priv,
+			 int tx_delay, int rx_delay)
+{
+	if (IS_ERR(bsp_priv->grf)) {
+		pr_err("%s: Missing rockchip,grf property\n", __func__);
+		return;
+	}
+
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+		     GMAC_PHY_INTF_SEL_RGMII);
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+		     GMAC_RMII_MODE_CLR);
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON3,
+		     GMAC_RXCLK_DLY_ENABLE);
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON3,
+		     GMAC_TXCLK_DLY_ENABLE);
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON3,
+		     GMAC_CLK_RX_DL_CFG(rx_delay));
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON3,
+		     GMAC_CLK_TX_DL_CFG(tx_delay));
+
+	regmap_write(bsp_priv->grf, RK3288_GRF_GPIO3D_E, 0xFFFFFFFF);
+	regmap_write(bsp_priv->grf, RK3288_GRF_GPIO4B_E,
+		     0x3<<2<<16 | 0x3<<2);
+	regmap_write(bsp_priv->grf, RK3288_GRF_GPIO4A_E, 0xFFFFFFFF);
+
+	pr_info("%s: tx delay=0x%x; rx delay=0x%x;\n",
+		__func__, tx_delay, rx_delay);
+}
+
+static void set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+	if (IS_ERR(bsp_priv->grf)) {
+		pr_err("%s: Missing rockchip,grf property\n", __func__);
+		return;
+	}
+
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+		     GMAC_PHY_INTF_SEL_RMII);
+	regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+		     GMAC_RMII_MODE);
+}
+
+static void set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+	if (IS_ERR(bsp_priv->grf)) {
+		pr_err("%s: Missing rockchip,grf property\n", __func__);
+		return;
+	}
+
+	if (speed == 10)
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1, GMAC_CLK_2_5M);
+	else if (speed == 100)
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1, GMAC_CLK_25M);
+	else if (speed == 1000)
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1, GMAC_CLK_125M);
+	else
+		pr_err("unknown speed value for RGMII! speed=%d", speed);
+}
+
+static void set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+	if (IS_ERR(bsp_priv->grf)) {
+		pr_err("%s: Missing rockchip,grf property\n", __func__);
+		return;
+	}
+
+	if (speed == 10) {
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+			     GMAC_RMII_CLK_2_5M);
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+			     GMAC_SPEED_10M);
+	} else if (speed == 100) {
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+			     GMAC_RMII_CLK_25M);
+		regmap_write(bsp_priv->grf, RK3288_GRF_SOC_CON1,
+			     GMAC_SPEED_100M);
+	} else {
+		pr_err("unknown speed value for RMII! speed=%d", speed);
+	}
+}
+
+#define MAC_CLK_RX	"mac_clk_rx"
+#define MAC_CLK_TX	"mac_clk_tx"
+#define CLK_MAC_REF	"clk_mac_ref"
+#define CLK_MAC_REF_OUT	"clk_mac_refout"
+#define CLK_MAC_PLL	"clk_mac_pll"
+#define ACLK_MAC	"aclk_mac"
+#define PCLK_MAC	"pclk_mac"
+#define MAC_CLKIN	"ext_gmac"
+#define CLK_MAC		"stmmaceth"
+
+int gmac_clk_init(struct rk_priv_data *bsp_priv)
+{
+	struct device *dev = &bsp_priv->pdev->dev;
+
+	bsp_priv->clk_enabled = false;
+
+	bsp_priv->mac_clk_rx = clk_get(dev, MAC_CLK_RX);
+	if (IS_ERR(bsp_priv->mac_clk_rx))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, MAC_CLK_RX);
+
+	bsp_priv->mac_clk_tx = clk_get(dev, MAC_CLK_TX);
+	if (IS_ERR(bsp_priv->mac_clk_tx))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, MAC_CLK_TX);
+
+	bsp_priv->clk_mac_ref = clk_get(dev, CLK_MAC_REF);
+	if (IS_ERR(bsp_priv->clk_mac_ref))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, CLK_MAC_REF);
+
+	bsp_priv->clk_mac_refout = clk_get(dev, CLK_MAC_REF_OUT);
+	if (IS_ERR(bsp_priv->clk_mac_refout))
+		pr_warn("%s: warning:cannot get clock %s\n",
+			__func__, CLK_MAC_REF_OUT);
+
+	bsp_priv->aclk_mac = clk_get(dev, ACLK_MAC);
+	if (IS_ERR(bsp_priv->aclk_mac))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, ACLK_MAC);
+
+	bsp_priv->pclk_mac = clk_get(dev, PCLK_MAC);
+	if (IS_ERR(bsp_priv->pclk_mac))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, PCLK_MAC);
+
+	bsp_priv->clk_mac_pll = clk_get(dev, CLK_MAC_PLL);
+	if (IS_ERR(bsp_priv->clk_mac_pll))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, CLK_MAC_PLL);
+
+	bsp_priv->gmac_clkin = clk_get(dev, MAC_CLKIN);
+	if (IS_ERR(bsp_priv->gmac_clkin))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, MAC_CLKIN);
+
+	bsp_priv->clk_mac = clk_get(dev, CLK_MAC);
+	if (IS_ERR(bsp_priv->clk_mac))
+		pr_warn("%s: warning: cannot get clock %s\n",
+			__func__, CLK_MAC);
+
+	if (bsp_priv->clock_input) {
+		pr_info("%s: clock input from PHY\n", __func__);
+	} else {
+		if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII)
+			clk_set_rate(bsp_priv->clk_mac_pll, 50000000);
+
+		clk_set_parent(bsp_priv->clk_mac, bsp_priv->clk_mac_pll);
+	}
+
+	return 0;
+}
+
+static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable)
+{
+	int phy_iface = phy_iface = bsp_priv->phy_iface;
+
+	if (enable) {
+		if (!bsp_priv->clk_enabled) {
+			if (phy_iface == PHY_INTERFACE_MODE_RMII) {
+				if (!IS_ERR(bsp_priv->mac_clk_rx))
+					clk_prepare_enable(
+						bsp_priv->mac_clk_rx);
+
+				if (!IS_ERR(bsp_priv->clk_mac_ref))
+					clk_prepare_enable(
+						bsp_priv->clk_mac_ref);
+
+				if (!IS_ERR(bsp_priv->clk_mac_refout))
+					clk_prepare_enable(
+						bsp_priv->clk_mac_refout);
+			}
+
+			if (!IS_ERR(bsp_priv->aclk_mac))
+				clk_prepare_enable(bsp_priv->aclk_mac);
+
+			if (!IS_ERR(bsp_priv->pclk_mac))
+				clk_prepare_enable(bsp_priv->pclk_mac);
+
+			if (!IS_ERR(bsp_priv->mac_clk_tx))
+				clk_prepare_enable(bsp_priv->mac_clk_tx);
+
+			/**
+			 * if (!IS_ERR(bsp_priv->clk_mac))
+			 *	clk_prepare_enable(bsp_priv->clk_mac);
+			 */
+			mdelay(5);
+			bsp_priv->clk_enabled = true;
+		}
+	} else {
+		if (bsp_priv->clk_enabled) {
+			if (phy_iface == PHY_INTERFACE_MODE_RMII) {
+				if (!IS_ERR(bsp_priv->mac_clk_rx))
+					clk_disable_unprepare(
+						bsp_priv->mac_clk_rx);
+
+				if (!IS_ERR(bsp_priv->clk_mac_ref))
+					clk_disable_unprepare(
+						bsp_priv->clk_mac_ref);
+
+				if (!IS_ERR(bsp_priv->clk_mac_refout))
+					clk_disable_unprepare(
+						bsp_priv->clk_mac_refout);
+			}
+
+			if (!IS_ERR(bsp_priv->aclk_mac))
+				clk_disable_unprepare(bsp_priv->aclk_mac);
+
+			if (!IS_ERR(bsp_priv->pclk_mac))
+				clk_disable_unprepare(bsp_priv->pclk_mac);
+
+			if (!IS_ERR(bsp_priv->mac_clk_tx))
+				clk_disable_unprepare(bsp_priv->mac_clk_tx);
+			/**
+			 * if (!IS_ERR(bsp_priv->clk_mac))
+			 *	clk_disable_unprepare(bsp_priv->clk_mac);
+			 */
+			bsp_priv->clk_enabled = false;
+		}
+	}
+
+	return 0;
+}
+
+static int power_on_by_pmu(struct rk_priv_data *bsp_priv, bool enable)
+{
+	struct regulator *ldo;
+	char *ldostr = bsp_priv->pmu_regulator;
+	int ret;
+
+	if (!ldostr) {
+		pr_err("%s: no ldo found\n", __func__);
+		return -1;
+	}
+
+	ldo = regulator_get(NULL, ldostr);
+	if (!ldo) {
+		pr_err("\n%s get ldo %s failed\n", __func__, ldostr);
+	} else {
+		if (enable) {
+			if (!regulator_is_enabled(ldo)) {
+				regulator_set_voltage(ldo, 3300000, 3300000);
+				ret = regulator_enable(ldo);
+				if (ret != 0)
+					pr_err("%s: fail to enable %s\n",
+					       __func__, ldostr);
+				else
+					pr_info("turn on ldo done.\n");
+			} else {
+				pr_warn("%s is enabled before enable", ldostr);
+			}
+		} else {
+			if (regulator_is_enabled(ldo)) {
+				ret = regulator_disable(ldo);
+				if (ret != 0)
+					pr_err("%s: fail to disable %s\n",
+					       __func__, ldostr);
+				else
+					pr_info("turn off ldo done.\n");
+			} else {
+				pr_warn("%s is disabled before disable",
+					ldostr);
+			}
+		}
+		regulator_put(ldo);
+	}
+
+	return 0;
+}
+
+static int power_on_by_gpio(struct rk_priv_data *bsp_priv, bool enable)
+{
+	if (enable) {
+		/*power on*/
+		if (gpio_is_valid(bsp_priv->power_io))
+			gpio_direction_output(bsp_priv->power_io,
+					      bsp_priv->power_io_level);
+	} else {
+		/*power off*/
+		if (gpio_is_valid(bsp_priv->power_io))
+			gpio_direction_output(bsp_priv->power_io,
+					      !bsp_priv->power_io_level);
+	}
+
+	return 0;
+}
+
+static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
+{
+	int ret = -1;
+
+	pr_info("Ethernet PHY power %s\n", enable == 1 ? "on" : "off");
+
+	if (bsp_priv->power_ctrl_by_pmu)
+		ret = power_on_by_pmu(bsp_priv, enable);
+	else
+		ret =  power_on_by_gpio(bsp_priv, enable);
+
+	if (enable) {
+		/*reset*/
+		if (gpio_is_valid(bsp_priv->reset_io)) {
+			gpio_direction_output(bsp_priv->reset_io,
+					      bsp_priv->reset_io_level);
+			mdelay(5);
+			gpio_direction_output(bsp_priv->reset_io,
+					      !bsp_priv->reset_io_level);
+		}
+		mdelay(30);
+
+	} else {
+		/*pull down reset*/
+		if (gpio_is_valid(bsp_priv->reset_io)) {
+			gpio_direction_output(bsp_priv->reset_io,
+					      bsp_priv->reset_io_level);
+		}
+	}
+
+	return ret;
+}
+
+#define GPIO_PHY_POWER	"gmac_phy_power"
+#define GPIO_PHY_RESET	"gmac_phy_reset"
+#define GPIO_PHY_IRQ	"gmac_phy_irq"
+
+static void *rk_gmac_setup(struct platform_device *pdev)
+{
+	struct rk_priv_data *bsp_priv;
+	struct device *dev = &pdev->dev;
+	enum of_gpio_flags flags;
+	int ret;
+	const char *strings = NULL;
+	int value;
+	int irq;
+
+	bsp_priv = devm_kzalloc(dev, sizeof(*bsp_priv), GFP_KERNEL);
+	if (!bsp_priv)
+		return ERR_PTR(-ENOMEM);
+
+	bsp_priv->phy_iface = of_get_phy_mode(dev->of_node);
+
+	ret = of_property_read_string(dev->of_node, "pmu_regulator", &strings);
+	if (ret) {
+		pr_err("%s: Can not read property: pmu_regulator.\n", __func__);
+		bsp_priv->power_ctrl_by_pmu = false;
+	} else {
+		pr_info("%s: ethernet phy power controlled by pmu(%s).\n",
+			__func__, strings);
+		bsp_priv->power_ctrl_by_pmu = true;
+		strcpy(bsp_priv->pmu_regulator, strings);
+	}
+
+	ret = of_property_read_u32(dev->of_node, "pmu_enable_level", &value);
+	if (ret) {
+		pr_err("%s: Can not read property: pmu_enable_level.\n",
+		       __func__);
+		bsp_priv->power_ctrl_by_pmu = false;
+	} else {
+		pr_info("%s: PHY power controlled by pmu(level = %s).\n",
+			__func__, (value == 1) ? "HIGH" : "LOW");
+		bsp_priv->power_ctrl_by_pmu = true;
+		bsp_priv->pmu_enable_level = value;
+	}
+
+	ret = of_property_read_string(dev->of_node, "clock_in_out", &strings);
+	if (ret) {
+		pr_err("%s: Can not read property: clock_in_out.\n", __func__);
+		bsp_priv->clock_input = true;
+	} else {
+		pr_info("%s: clock input or output? (%s).\n",
+			__func__, strings);
+		if (!strcmp(strings, "input"))
+			bsp_priv->clock_input = true;
+		else
+			bsp_priv->clock_input = false;
+	}
+
+	ret = of_property_read_u32(dev->of_node, "tx_delay", &value);
+	if (ret) {
+		bsp_priv->tx_delay = 0x30;
+		pr_err("%s: Can not read property: tx_delay.", __func__);
+		pr_err("%s: set tx_delay to 0x%x\n",
+		       __func__, bsp_priv->tx_delay);
+	} else {
+		pr_info("%s: TX delay(0x%x).\n", __func__, value);
+		bsp_priv->tx_delay = value;
+	}
+
+	ret = of_property_read_u32(dev->of_node, "rx_delay", &value);
+	if (ret) {
+		bsp_priv->rx_delay = 0x10;
+		pr_err("%s: Can not read property: rx_delay.", __func__);
+		pr_err("%s: set rx_delay to 0x%x\n",
+		       __func__, bsp_priv->rx_delay);
+	} else {
+		pr_info("%s: RX delay(0x%x).\n", __func__, value);
+		bsp_priv->rx_delay = value;
+	}
+
+	bsp_priv->grf = syscon_regmap_lookup_by_phandle(dev->of_node,
+							"rockchip,grf");
+	if (IS_ERR(bsp_priv->grf))
+		dev_err(&pdev->dev, "Missing rockchip,grf property\n");
+
+	bsp_priv->phyirq_io =
+		of_get_named_gpio_flags(dev->of_node,
+					"phyirq-gpio", 0, &flags);
+	bsp_priv->phyirq_io_level = (flags & OF_GPIO_ACTIVE_LOW) ? 0 : 1;
+
+	bsp_priv->reset_io =
+		of_get_named_gpio_flags(dev->of_node,
+					"reset-gpio", 0, &flags);
+	bsp_priv->reset_io_level = (flags & OF_GPIO_ACTIVE_LOW) ? 0 : 1;
+
+	bsp_priv->power_io =
+		of_get_named_gpio_flags(dev->of_node, "power-gpio", 0, &flags);
+	bsp_priv->power_io_level = (flags & OF_GPIO_ACTIVE_LOW) ? 0 : 1;
+
+	/*power*/
+	if (!gpio_is_valid(bsp_priv->power_io)) {
+		pr_err("%s: Failed to get GPIO %s.\n",
+		       __func__, "power-gpio");
+	} else {
+		ret = gpio_request(bsp_priv->power_io, GPIO_PHY_POWER);
+		if (ret)
+			pr_err("%s: ERROR: Failed to request GPIO %s.\n",
+			       __func__, GPIO_PHY_POWER);
+	}
+
+	if (!gpio_is_valid(bsp_priv->reset_io)) {
+		pr_err("%s: ERROR: Get reset-gpio failed.\n", __func__);
+	} else {
+		ret = gpio_request(bsp_priv->reset_io, GPIO_PHY_RESET);
+		if (ret)
+			pr_err("%s: ERROR: Failed to request GPIO %s.\n",
+			       __func__, GPIO_PHY_RESET);
+	}
+
+	if (bsp_priv->phyirq_io > 0) {
+		struct plat_stmmacenet_data *plat_dat;
+
+		pr_info("PHY irq in use\n");
+		ret = gpio_request(bsp_priv->phyirq_io, GPIO_PHY_IRQ);
+		if (ret < 0) {
+			pr_warn("%s: Failed to request GPIO %s\n",
+				__func__, GPIO_PHY_IRQ);
+			goto goon;
+		}
+
+		ret = gpio_direction_input(bsp_priv->phyirq_io);
+		if (ret < 0) {
+			pr_err("%s, Failed to set input for GPIO %s\n",
+			       __func__, GPIO_PHY_IRQ);
+			gpio_free(bsp_priv->phyirq_io);
+			goto goon;
+		}
+
+		irq = gpio_to_irq(bsp_priv->phyirq_io);
+		if (irq < 0) {
+			ret = irq;
+			pr_err("Failed to set irq for %s\n",
+			       GPIO_PHY_IRQ);
+			gpio_free(bsp_priv->phyirq_io);
+			goto goon;
+		}
+
+		plat_dat = dev_get_platdata(&pdev->dev);
+		if (plat_dat)
+			plat_dat->mdio_bus_data->probed_phy_irq = irq;
+		else
+			pr_err("%s: plat_data is NULL\n", __func__);
+	}
+
+goon:
+	/*rmii or rgmii*/
+	if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RGMII) {
+		pr_info("%s: init for RGMII\n", __func__);
+		set_to_rgmii(bsp_priv, bsp_priv->tx_delay, bsp_priv->rx_delay);
+	} else if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) {
+		pr_info("%s: init for RMII\n", __func__);
+		set_to_rmii(bsp_priv);
+	} else {
+		pr_err("%s: ERROR: NO interface defined!\n", __func__);
+	}
+
+	bsp_priv->pdev = pdev;
+
+	gmac_clk_init(bsp_priv);
+
+	return bsp_priv;
+}
+
+static int rk_gmac_init(struct platform_device *pdev, void *priv)
+{
+	struct rk_priv_data *bsp_priv = priv;
+	int ret;
+
+	ret = phy_power_on(bsp_priv, true);
+	if (ret)
+		return ret;
+
+	ret = gmac_clk_enable(bsp_priv, true);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void rk_gmac_exit(struct platform_device *pdev, void *priv)
+{
+	struct rk_priv_data *gmac = priv;
+
+	phy_power_on(gmac, false);
+	gmac_clk_enable(gmac, false);
+}
+
+static void rk_fix_speed(void *priv, unsigned int speed)
+{
+	struct rk_priv_data *bsp_priv = priv;
+
+	if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RGMII)
+		set_rgmii_speed(bsp_priv, speed);
+	else if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII)
+		set_rmii_speed(bsp_priv, speed);
+	else
+		pr_err("unsupported interface %d", bsp_priv->phy_iface);
+}
+
+const struct stmmac_of_data rk_gmac_data = {
+	.has_gmac = 1,
+	.tx_coe = 1,
+	.fix_mac_speed = rk_fix_speed,
+	.setup = rk_gmac_setup,
+	.init = rk_gmac_init,
+	.exit = rk_gmac_exit,
+};
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 15814b7..b4dee96 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -33,6 +33,7 @@
 
 static const struct of_device_id stmmac_dt_ids[] = {
 	/* SoC specific glue layers should come before generic bindings */
+	{ .compatible = "rockchip,rk3288-gmac", .data = &rk_gmac_data},
 	{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
 	{ .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
 	{ .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data},
@@ -291,6 +292,8 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
 			return  -ENOMEM;
 		}
 
+		pdev->dev.platform_data = plat_dat;
+
 		ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
 		if (ret) {
 			pr_err("%s: main dt probe failed", __func__);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
index 25dd1f7..32a0516 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
@@ -24,5 +24,6 @@ extern const struct stmmac_of_data sun7i_gmac_data;
 extern const struct stmmac_of_data stih4xx_dwmac_data;
 extern const struct stmmac_of_data stid127_dwmac_data;
 extern const struct stmmac_of_data socfpga_gmac_data;
+extern const struct stmmac_of_data rk_gmac_data;
 
 #endif /* __STMMAC_PLATFORM_H__ */
-- 
1.7.9.5