ARM: dts: marzen: Add SDHI0 VCCQ Regulator

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

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/r8a7779-marzen.dts b/arch/arm/boot/dts/r8a7779-marzen.dts
index 9412a86f9b30..4b9006bac3cb 100644
--- a/arch/arm/boot/dts/r8a7779-marzen.dts
+++ b/arch/arm/boot/dts/r8a7779-marzen.dts
@@ -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";
 };