rockchip: pinctrl: rk3368: add support for configuring the MMC pins

[platform/kernel/u-boot.git] / drivers / pinctrl / rockchip / pinctrl_rk3368.c

diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3368.c b/drivers/pinctrl/rockchip/pinctrl_rk3368.c
index 22cd593..cf2f834 100644 (file)
--- a/drivers/pinctrl/rockchip/pinctrl_rk3368.c
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3368.c
@@ -79,6 +79,46 @@ static void pinctrl_rk3368_gmac_config(struct rk3368_grf *grf, int gmac_id)
 }
 #endif
 
+static void pinctrl_rk3368_sdmmc_config(struct rk3368_grf *grf, int mmc_id)
+{
+       switch (mmc_id) {
+       case PERIPH_ID_EMMC:
+               debug("mmc id = %d setting registers!\n", mmc_id);
+               rk_clrsetreg(&grf->gpio1c_iomux,
+                            GPIO1C2_MASK | GPIO1C3_MASK |
+                            GPIO1C4_MASK | GPIO1C5_MASK |
+                            GPIO1C6_MASK | GPIO1C7_MASK,
+                            GPIO1C2_EMMC_DATA0 |
+                            GPIO1C3_EMMC_DATA1 |
+                            GPIO1C4_EMMC_DATA2 |
+                            GPIO1C5_EMMC_DATA3 |
+                            GPIO1C6_EMMC_DATA4 |
+                            GPIO1C7_EMMC_DATA5);
+               rk_clrsetreg(&grf->gpio1d_iomux,
+                            GPIO1D0_MASK | GPIO1D1_MASK |
+                            GPIO1D2_MASK | GPIO1D3_MASK,
+                            GPIO1D0_EMMC_DATA6 |
+                            GPIO1D1_EMMC_DATA7 |
+                            GPIO1D2_EMMC_CMD |
+                            GPIO1D3_EMMC_PWREN);
+               rk_clrsetreg(&grf->gpio2a_iomux,
+                            GPIO2A3_MASK | GPIO2A4_MASK,
+                            GPIO2A3_EMMC_RSTNOUT |
+                            GPIO2A4_EMMC_CLKOUT);
+               break;
+       case PERIPH_ID_SDCARD:
+               /*
+                * We assume that the BROM has already set this up
+                * correctly for us and that there's nothing to do
+                * here.
+                */
+               break;
+       default:
+               debug("mmc id = %d iomux error!\n", mmc_id);
+               break;
+       }
+}
+
 static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
 {
        struct rk3368_pinctrl_priv *priv = dev_get_priv(dev);
@@ -92,6 +132,10 @@ static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
        case PERIPH_ID_UART4:
                pinctrl_rk3368_uart_config(priv, func);
                break;
+       case PERIPH_ID_EMMC:
+       case PERIPH_ID_SDCARD:
+               pinctrl_rk3368_sdmmc_config(priv->grf, func);
+               break;
 #if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
        case PERIPH_ID_GMAC:
                pinctrl_rk3368_gmac_config(priv->grf, func);
@@ -126,6 +170,10 @@ static int rk3368_pinctrl_get_periph_id(struct udevice *dev,
                return PERIPH_ID_UART1;
        case 55:
                return PERIPH_ID_UART0;
+       case 35:
+               return PERIPH_ID_EMMC;
+       case 32:
+               return PERIPH_ID_SDCARD;
 #if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
        case 27:
                return PERIPH_ID_GMAC;