ARM: dts: meson8b-odroidc1: add microSD support

The Odroid C1 features a microSD slot. This patch adds the necessary
DT bindings to support it.

Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

diff --git a/arch/arm/boot/dts/meson8b-odroidc1.dts b/arch/arm/boot/dts/meson8b-odroidc1.dts
index d5e8305..3a5603d 100644 (file)
--- a/arch/arm/boot/dts/meson8b-odroidc1.dts
+++ b/arch/arm/boot/dts/meson8b-odroidc1.dts
@@ -54,6 +54,7 @@
 
        aliases {
                serial0 = &uart_AO;
+               mmc0 = &sd_card_slot;
        };
 
        memory {
@@ -69,6 +70,37 @@
                        default-state = "off";
                };
        };
+
+       tflash_vdd: regulator-tflash_vdd {
+               /*
+                * signal name from schematics: TFLASH_VDD_EN
+                */
+               compatible = "regulator-fixed";
+
+               regulator-name = "TFLASH_VDD";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpio = <&gpio GPIOY_12 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+       };
+
+       tf_io: gpio-regulator-tf_io {
+               compatible = "regulator-gpio";
+
+               regulator-name = "TF_IO";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+
+               /*
+                * signal name from schematics: TF_3V3N_1V8_EN
+                */
+               gpios = <&gpio_ao GPIOAO_3 GPIO_ACTIVE_HIGH>;
+               gpios-states = <0>;
+
+               states = <3300000 0
+                         1800000 1>;
+       };
 };
 
 &uart_AO {
@@ -100,6 +132,32 @@
        status = "okay";
 };
 
+&sdio {
+       status = "okay";
+
+       pinctrl-0 = <&sd_b_pins>;
+       pinctrl-names = "default";
+
+       /* SD card */
+       sd_card_slot: slot@1 {
+               compatible = "mmc-slot";
+               reg = <1>;
+               status = "okay";
+
+               bus-width = <4>;
+               no-sdio;
+               cap-mmc-highspeed;
+               cap-sd-highspeed;
+               disable-wp;
+
+               cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_HIGH>;
+               cd-inverted;
+
+               vmmc-supply = <&tflash_vdd>;
+               vqmmc-supply = <&tf_io>;
+       };
+};
+
 &ethmac {
        status = "okay";
 

diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi
index 5f7841b..f9eceab 100644 (file)
--- a/arch/arm/boot/dts/meson8b.dtsi
+++ b/arch/arm/boot/dts/meson8b.dtsi
@@ -206,6 +206,14 @@
                                function = "ethernet";
                        };
                };
+
+               sd_b_pins: sd-b {
+                       mux {
+                               groups = "sd_d0_b", "sd_d1_b", "sd_d2_b",
+                                       "sd_d3_b", "sd_clk_b", "sd_cmd_b";
+                               function = "sd_b";
+                       };
+               };
        };
 };