ARM: shmobile: silk: add eMMC DT support

Define the SILK board dependent part of the MMCIF device node (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 the original patch by Vladimir Barinov
<vladimir.barinov@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7794-silk.dts b/arch/arm/boot/dts/r8a7794-silk.dts
index 79bc64b9445646dcd88734bb71dc6f9279c71c88..d4dd5a30ccdf30cfc1c19d84d206b5b75da16a40 100644 (file)
--- a/arch/arm/boot/dts/r8a7794-silk.dts
+++ b/arch/arm/boot/dts/r8a7794-silk.dts
@@ -30,6 +30,15 @@
                device_type = "memory";
                reg = <0 0x40000000 0 0x40000000>;
        };
+
+       d3_3v: regulator@0 {
+               compatible = "regulator-fixed";
+               regulator-name = "D3.3V";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-boot-on;
+               regulator-always-on;
+       };
 };
 
 &extal_clk {
@@ -51,6 +60,11 @@
                renesas,groups = "intc_irq8";
                renesas,function = "intc";
        };
+
+       mmcif0_pins: mmcif0 {
+               renesas,groups = "mmc_data8", "mmc_ctrl";
+               renesas,function = "mmc";
+       };
 };
 
 &scif2 {
@@ -75,3 +89,14 @@
                micrel,led-mode = <1>;
        };
 };
+
+&mmcif0 {
+       pinctrl-0 = <&mmcif0_pins>;
+       pinctrl-names = "default";
+
+       vmmc-supply = <&d3_3v>;
+       vqmmc-supply = <&d3_3v>;
+       bus-width = <8>;
+       non-removable;
+       status = "okay";
+};