net: mt7628-eth: remove hardcoded gpio settings and regmap-based phy reset

This patch removes hardcoded gpio settings as they have been replaced by
pinctrl in dts, and also replaces regmap-based phy reset with a more
generic reset controller.

Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>

diff --git a/drivers/net/mt7628-eth.c b/drivers/net/mt7628-eth.c
index 7833b2f47aaeb83f849eb115a2108e3b5a4a93cd..4675b0f00319d81cb0253032ed3c51f7ded10508 100644 (file)
--- a/drivers/net/mt7628-eth.c
+++ b/drivers/net/mt7628-eth.c
@@ -18,23 +18,12 @@
 #include <malloc.h>
 #include <miiphy.h>
 #include <net.h>
-#include <regmap.h>
-#include <syscon.h>
+#include <reset.h>
 #include <wait_bit.h>
 #include <asm/io.h>
 #include <linux/bitfield.h>
 #include <linux/err.h>
 
-/* System controller register */
-#define MT7628_RSTCTRL_REG     0x34
-#define RSTCTRL_EPHY_RST       BIT(24)
-
-#define MT7628_AGPIO_CFG_REG   0x3c
-#define MT7628_EPHY_GPIO_AIO_EN        GENMASK(20, 17)
-#define MT7628_EPHY_P0_DIS     BIT(16)
-
-#define MT7628_GPIO2_MODE_REG  0x64
-
 /* Ethernet frame engine register */
 #define PDMA_RELATED           0x0800
 
@@ -137,7 +126,6 @@ struct fe_tx_dma {
 struct mt7628_eth_dev {
        void __iomem *base;             /* frame engine base address */
        void __iomem *eth_sw_base;      /* switch base address */
-       struct regmap *sysctrl_regmap;  /* system-controller reg-map */
 
        struct mii_dev *bus;
 
@@ -150,6 +138,8 @@ struct mt7628_eth_dev {
        int rx_dma_idx;
        /* Point to the next TXD in TXD Ring0 CPU wants to use */
        int tx_dma_idx;
+
+       struct reset_ctl        rst_ephy;
 };
 
 static int mdio_wait_read(struct mt7628_eth_dev *priv, u32 mask, bool mask_set)
@@ -301,20 +291,9 @@ static void rt305x_esw_init(struct mt7628_eth_dev *priv)
        /* 1us cycle number=125 (FE's clock=125Mhz) */
        writel(0x7d000000, base + MT7628_SWITCH_BMU_CTRL);
 
-       /* Configure analog GPIO setup */
-       regmap_update_bits(priv->sysctrl_regmap, MT7628_AGPIO_CFG_REG,
-                          MT7628_EPHY_P0_DIS, MT7628_EPHY_GPIO_AIO_EN);
-
        /* Reset PHY */
-       regmap_update_bits(priv->sysctrl_regmap, MT7628_RSTCTRL_REG,
-                          0, RSTCTRL_EPHY_RST);
-       regmap_update_bits(priv->sysctrl_regmap, MT7628_RSTCTRL_REG,
-                          RSTCTRL_EPHY_RST, 0);
-       mdelay(10);
-
-       /* Set P0 EPHY LED mode */
-       regmap_update_bits(priv->sysctrl_regmap, MT7628_GPIO2_MODE_REG,
-                          0x0ffc0ffc, 0x05540554);
+       reset_assert(&priv->rst_ephy);
+       reset_deassert(&priv->rst_ephy);
        mdelay(10);
 
        mt7628_ephy_init(priv);
@@ -558,7 +537,6 @@ static void mt7628_eth_stop(struct udevice *dev)
 static int mt7628_eth_probe(struct udevice *dev)
 {
        struct mt7628_eth_dev *priv = dev_get_priv(dev);
-       struct udevice *syscon;
        struct mii_dev *bus;
        int ret;
        int i;
@@ -573,20 +551,13 @@ static int mt7628_eth_probe(struct udevice *dev)
        if (IS_ERR(priv->eth_sw_base))
                return PTR_ERR(priv->eth_sw_base);
 
-       /* Get system controller regmap */
-       ret = uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
-                                          "syscon", &syscon);
+       /* Reset controller */
+       ret = reset_get_by_name(dev, "ephy", &priv->rst_ephy);
        if (ret) {
-               pr_err("unable to find syscon device\n");
+               pr_err("unable to find reset controller for ethernet PHYs\n");
                return ret;
        }
 
-       priv->sysctrl_regmap = syscon_get_regmap(syscon);
-       if (!priv->sysctrl_regmap) {
-               pr_err("unable to find regmap\n");
-               return -ENODEV;
-       }
-
        /* Put rx and tx rings into KSEG1 area (uncached) */
        priv->tx_ring = (struct fe_tx_dma *)
                KSEG1ADDR(memalign(ARCH_DMA_MINALIGN,