From: Magnus Damm <damm+rene...@opensource.se>

Add support for the on-board voltage regulator hooked up to GPIO3_20
on r8a7779 Marzen. The board schematics describes the regulator as U4
TPS2110A. Input wise, U4 has D0 fixed to ground, D1 tied to GPIO3_20
while IN1 is fixed to 3.3V and IN2 is fixed to 1.8V. OUT goes to the
pull-ups for the data pins of SDHI0.

Signed-off-by: Magnus Damm <damm+rene...@opensource.se>
---

 arch/arm/boot/dts/r8a7779-marzen.dts |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

--- 0001/arch/arm/boot/dts/r8a7779-marzen.dts
+++ work/arch/arm/boot/dts/r8a7779-marzen.dts   2018-02-19 21:21:14.400607110 
+0900
@@ -42,6 +42,19 @@
                regulator-always-on;
        };
 
+       vccq_sdhi0: regulator-vccq-sdhi0 {
+               compatible = "regulator-gpio";
+
+               regulator-name = "SDHI0 VccQ";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <3300000>;
+
+               gpios = <&gpio3 20 GPIO_ACTIVE_HIGH>;
+               gpios-states = <1>;
+               states = <3300000 1
+                         1800000 0>;
+       };
+
        ethernet@18000000 {
                compatible = "smsc,lan9220", "smsc,lan9115";
                reg = <0x18000000 0x100>;
@@ -243,6 +256,7 @@
        pinctrl-names = "default";
 
        vmmc-supply = <&fixedregulator3v3>;
+       vqmmc-supply = <&vccq_sdhi0>;
        bus-width = <4>;
        status = "okay";
 };

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