net: stmmac: dwmac-rk: Add rk3328 gmac support

Change-Id: I6d707c67c8edf809e47e1907765440088e162855
Signed-off-by: david.wu <david.wu@rock-chips.com>

diff --git a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
index 2637774ff26255700d5d8682de98e80431800b2c..9affe4f20f53bfa6ef2ee6e6c022cb2e9af1f978 100644 (file)
--- a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
+++ b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
@@ -4,8 +4,8 @@ The device node has following properties.
 
 Required properties:
  - compatible: Can be one of "rockchip,rk3228-gmac", "rockchip,rk3288-gmac",
-                             "rockchip,rk3366-gmac", "rockchip,rk3368-gmac",
-                             "rockchip,rk3399-gmac"
+                             "rockchip,rk3328-gmac", "rockchip,rk3366-gmac",
+                             "rockchip,rk3368-gmac", "rockchip,rk3399-gmac"
  - reg: addresses and length of the register sets for the device.
  - interrupts: Should contain the GMAC interrupts.
  - interrupt-names: Should contain the interrupt names "macirq".

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 198932f00d0895967ed8063c0fd1f80776f38a37..19e8c569d2c091c342489b4757954c526e2446d3 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -301,6 +301,122 @@ static const struct rk_gmac_ops rk3288_ops = {
        .set_rmii_speed = rk3288_set_rmii_speed,
 };
 
+#define RK3328_GRF_MAC_CON0    0x0900
+#define RK3328_GRF_MAC_CON1    0x0904
+
+/* RK3328_GRF_MAC_CON0 */
+#define RK3328_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 7)
+#define RK3328_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 0)
+
+/* RK3328_GRF_MAC_CON1 */
+#define RK3328_GMAC_PHY_INTF_SEL_RGMII \
+               (GRF_BIT(4) | GRF_CLR_BIT(5) | GRF_CLR_BIT(6))
+#define RK3328_GMAC_PHY_INTF_SEL_RMII  \
+               (GRF_CLR_BIT(4) | GRF_CLR_BIT(5) | GRF_BIT(6))
+#define RK3328_GMAC_FLOW_CTRL          GRF_BIT(3)
+#define RK3328_GMAC_FLOW_CTRL_CLR      GRF_CLR_BIT(3)
+#define RK3328_GMAC_SPEED_10M          GRF_CLR_BIT(2)
+#define RK3328_GMAC_SPEED_100M         GRF_BIT(2)
+#define RK3328_GMAC_RMII_CLK_25M       GRF_BIT(7)
+#define RK3328_GMAC_RMII_CLK_2_5M      GRF_CLR_BIT(7)
+#define RK3328_GMAC_CLK_125M           (GRF_CLR_BIT(11) | GRF_CLR_BIT(12))
+#define RK3328_GMAC_CLK_25M            (GRF_BIT(11) | GRF_BIT(12))
+#define RK3328_GMAC_CLK_2_5M           (GRF_CLR_BIT(11) | GRF_BIT(12))
+#define RK3328_GMAC_RMII_MODE          GRF_BIT(9)
+#define RK3328_GMAC_RMII_MODE_CLR      GRF_CLR_BIT(9)
+#define RK3328_GMAC_TXCLK_DLY_ENABLE   GRF_BIT(0)
+#define RK3328_GMAC_TXCLK_DLY_DISABLE  GRF_CLR_BIT(0)
+#define RK3328_GMAC_RXCLK_DLY_ENABLE   GRF_BIT(1)
+#define RK3328_GMAC_RXCLK_DLY_DISABLE  GRF_CLR_BIT(0)
+
+static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
+                               int tx_delay, int rx_delay)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                    RK3328_GMAC_PHY_INTF_SEL_RGMII |
+                    RK3328_GMAC_RMII_MODE_CLR |
+                    RK3328_GMAC_RXCLK_DLY_ENABLE |
+                    RK3328_GMAC_TXCLK_DLY_ENABLE);
+
+       regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON0,
+                    RK3328_GMAC_CLK_RX_DL_CFG(rx_delay) |
+                    RK3328_GMAC_CLK_TX_DL_CFG(tx_delay));
+}
+
+static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                    RK3328_GMAC_PHY_INTF_SEL_RMII |
+                    RK3328_GMAC_RMII_MODE);
+
+       /* set MAC to RMII mode */
+       regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1, GRF_BIT(11));
+}
+
+static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       if (speed == 10)
+               regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                            RK3328_GMAC_CLK_2_5M);
+       else if (speed == 100)
+               regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                            RK3328_GMAC_CLK_25M);
+       else if (speed == 1000)
+               regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                            RK3328_GMAC_CLK_125M);
+       else
+               dev_err(dev, "unknown speed value for RGMII! speed=%d", speed);
+}
+
+static void rk3328_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+       struct device *dev = &bsp_priv->pdev->dev;
+
+       if (IS_ERR(bsp_priv->grf)) {
+               dev_err(dev, "Missing rockchip,grf property\n");
+               return;
+       }
+
+       if (speed == 10)
+               regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                            RK3328_GMAC_RMII_CLK_2_5M |
+                            RK3328_GMAC_SPEED_10M);
+       else if (speed == 100)
+               regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+                            RK3328_GMAC_RMII_CLK_25M |
+                            RK3328_GMAC_SPEED_100M);
+       else
+               dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
+}
+
+static const struct rk_gmac_ops rk3328_ops = {
+       .set_to_rgmii = rk3328_set_to_rgmii,
+       .set_to_rmii = rk3328_set_to_rmii,
+       .set_rgmii_speed = rk3328_set_rgmii_speed,
+       .set_rmii_speed = rk3328_set_rmii_speed,
+};
+
 #define RK3366_GRF_SOC_CON6    0x0418
 #define RK3366_GRF_SOC_CON7    0x041c
 
@@ -980,6 +1096,7 @@ static int rk_gmac_probe(struct platform_device *pdev)
 static const struct of_device_id rk_gmac_dwmac_match[] = {
        { .compatible = "rockchip,rk3228-gmac", .data = &rk3228_ops },
        { .compatible = "rockchip,rk3288-gmac", .data = &rk3288_ops },
+       { .compatible = "rockchip,rk3328-gmac", .data = &rk3328_ops },
        { .compatible = "rockchip,rk3366-gmac", .data = &rk3366_ops },
        { .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
        { .compatible = "rockchip,rk3399-gmac", .data = &rk3399_ops },