net: ethernet: stmmac: dwmac-rk: Add RK3328 gmac support

Add constants and callback functions for the dwmac on rk3328 socs.
As can be seen, the base structure is the same, only registers and the
bits in them moved slightly.

Signed-off-by: david.wu <david.wu@rock-chips.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
index 95383c5..8f42755 100644 (file)
--- a/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
+++ b/Documentation/devicetree/bindings/net/rockchip-dwmac.txt
@@ -6,6 +6,7 @@ Required properties:
  - compatible: should be "rockchip,<name>-gamc"
    "rockchip,rk3228-gmac": found on RK322x SoCs
    "rockchip,rk3288-gmac": found on RK3288 SoCs
+   "rockchip,rk3328-gmac": found on RK3328 SoCs
    "rockchip,rk3366-gmac": found on RK3366 SoCs
    "rockchip,rk3368-gmac": found on RK3368 SoCs
    "rockchip,rk3399-gmac": found on RK3399 SoCs

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index fa6e970..e5db6ac 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -302,6 +302,122 @@ 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
 
@@ -1006,6 +1122,7 @@ static SIMPLE_DEV_PM_OPS(rk_gmac_pm_ops, rk_gmac_suspend, rk_gmac_resume);
 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 },