rockchip: pinctrl: rk3368: add GMAC (RGMII only) support

To add GMAC (Gigabit Ethernet) support (limited to RGMII only at this
point), we need support for additional pin-configuration.  This commit
adds the pinctrl support for GMAC in RGMII mode:
 * adds a PERIPH_ID_GMAC and the mapping from IRQ number to PERIPH_ID
 * configures the RGMII pins

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3368.c b/drivers/pinctrl/rockchip/pinctrl_rk3368.c
index c96459ff573a485729109e249d6589a09b264ef3..22cd593592ba01c7ce2ec2d795d2543782614662 100644 (file)
--- a/drivers/pinctrl/rockchip/pinctrl_rk3368.c
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3368.c
@@ -52,6 +52,33 @@ static void pinctrl_rk3368_uart_config(struct rk3368_pinctrl_priv *priv,
        }
 }
 
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+static void pinctrl_rk3368_gmac_config(struct rk3368_grf *grf, int gmac_id)
+{
+       rk_clrsetreg(&grf->gpio3b_iomux,
+                    GPIO3B0_MASK | GPIO3B1_MASK |
+                    GPIO3B2_MASK | GPIO3B5_MASK |
+                    GPIO3B6_MASK | GPIO3B7_MASK,
+                    GPIO3B0_MAC_TXD0 | GPIO3B1_MAC_TXD1 |
+                    GPIO3B2_MAC_TXD2 | GPIO3B5_MAC_TXEN |
+                    GPIO3B6_MAC_TXD3 | GPIO3B7_MAC_RXD0);
+       rk_clrsetreg(&grf->gpio3c_iomux,
+                    GPIO3C0_MASK | GPIO3C1_MASK |
+                    GPIO3C2_MASK | GPIO3C3_MASK |
+                    GPIO3C4_MASK | GPIO3C5_MASK |
+                    GPIO3C6_MASK,
+                    GPIO3C0_MAC_RXD1 | GPIO3C1_MAC_RXD2 |
+                    GPIO3C2_MAC_RXD3 | GPIO3C3_MAC_MDC |
+                    GPIO3C4_MAC_RXDV | GPIO3C5_MAC_RXEN |
+                    GPIO3C6_MAC_CLK);
+       rk_clrsetreg(&grf->gpio3d_iomux,
+                    GPIO3D0_MASK | GPIO3D1_MASK |
+                    GPIO3D4_MASK,
+                    GPIO3D0_MAC_MDIO | GPIO3D1_MAC_RXCLK |
+                    GPIO3D4_MAC_TXCLK);
+}
+#endif
+
 static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
 {
        struct rk3368_pinctrl_priv *priv = dev_get_priv(dev);
@@ -65,6 +92,11 @@ static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
        case PERIPH_ID_UART4:
                pinctrl_rk3368_uart_config(priv, func);
                break;
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+       case PERIPH_ID_GMAC:
+               pinctrl_rk3368_gmac_config(priv->grf, func);
+               break;
+#endif
        default:
                return -EINVAL;
        }
@@ -94,6 +126,10 @@ static int rk3368_pinctrl_get_periph_id(struct udevice *dev,
                return PERIPH_ID_UART1;
        case 55:
                return PERIPH_ID_UART0;
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+       case 27:
+               return PERIPH_ID_GMAC;
+#endif
        }
 
        return -ENOENT;