ARM: dts: alt: add MMCIF support

Define the Alt board dependent part of the MMCIF device node.

Like the Silk the board has eMMC chip along with the  necessary voltage
regulator (note that the Vcc/Vccq regulator is dummy -- it's required by
the MMCIF driver but doesn't actually exist on the board).

Based on work for the Silk board by Vladimir Barinov and Sergei Shtylyov.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7794-alt.dts b/arch/arm/boot/dts/r8a7794-alt.dts
index fe7c128cc96512ab35a4d8d0d0932cf7429ece55..8d1b35afaf82238093f41debafeddbbe09c371a3 100644 (file)
--- a/arch/arm/boot/dts/r8a7794-alt.dts
+++ b/arch/arm/boot/dts/r8a7794-alt.dts
@@ -30,6 +30,15 @@
                reg = <0 0x40000000 0 0x40000000>;
        };
 
+       d3_3v: regulator-d3-3v {
+               compatible = "regulator-fixed";
+               regulator-name = "D3.3V";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-boot-on;
+               regulator-always-on;
+       };
+
        vcc_sdhi0: regulator-vcc-sdhi0 {
                compatible = "regulator-fixed";
 
@@ -190,6 +199,11 @@
                function = "vin0";
        };
 
+       mmcif0_pins: mmcif0 {
+               groups = "mmc_data8", "mmc_ctrl";
+               function = "mmc";
+       };
+
        sdhi0_pins: sd0 {
                groups = "sdhi0_data4", "sdhi0_ctrl";
                function = "sdhi0";
@@ -228,6 +242,17 @@
        };
 };
 
+&mmcif0 {
+       pinctrl-0 = <&mmcif0_pins>;
+       pinctrl-names = "default";
+
+       vmmc-supply = <&d3_3v>;
+       vqmmc-supply = <&d3_3v>;
+       bus-width = <8>;
+       non-removable;
+       status = "okay";
+};
+
 &sdhi0 {
        pinctrl-0 = <&sdhi0_pins>;
        pinctrl-names = "default";