ARM: dts: meson8b: odroidc1: enable the SDHC controller

Odroid-C1 has an eMMC connector where users can optionally install an
eMMC module. The eMMC modules run off a 1.8V VQMMC supply which means
that HS-200 mode can be used (this is the highest mode that the SDHC
controller supports). Enable the SDHC controller so eMMC modules can be
accessed.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20200620163654.37207-4-martin.blumenstingl@googlemail.com

diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index cb21ac9..0c26467 100644 (file)
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -15,6 +15,7 @@
        aliases {
                serial0 = &uart_AO;
                mmc0 = &sd_card_slot;
+               mmc1 = &sdhc;
        };
 
        chosen {
@@ -26,6 +27,11 @@
                reg = <0x40000000 0x40000000>;
        };
 
+       emmc_pwrseq: emmc-pwrseq {
+               compatible = "mmc-pwrseq-emmc";
+               reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
+       };
+
        leds {
                compatible = "gpio-leds";
                blue {
@@ -310,6 +316,26 @@
        vref-supply = <&vcc_1v8>;
 };
 
+&sdhc {
+       status = "okay";
+
+       pinctrl-0 = <&sdxc_c_pins>;
+       pinctrl-names = "default";
+
+       bus-width = <8>;
+       max-frequency = <100000000>;
+
+       disable-wp;
+       cap-mmc-highspeed;
+       mmc-hs200-1_8v;
+       no-sdio;
+
+       mmc-pwrseq = <&emmc_pwrseq>;
+
+       vmmc-supply = <&vcc_3v3>;
+       vqmmc-supply = <&vcc_1v8>;
+};
+
 &sdio {
        status = "okay";