arm64: dts: meson-sm1-odroid-hc4: add regulators controlled by GPIOH_8

As described in the HC4 schematics, GPIOH_8 controls the USB 5V and 12V
regulators used to power the SATA drives.

And is set as Open Drain since this GPIO doesn't support Push-Pull.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20210607065435.577334-6-narmstrong@baylibre.com

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts
index 0a34b65..fdad6b9 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts
@@ -44,6 +44,32 @@
                };
        };
 
+       /* Powers the SATA Disk 0 regulator, which is enabled when a disk load is detected */
+       p12v_0: regulator-p12v_0 {
+               compatible = "regulator-fixed";
+               regulator-name = "P12V_0";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               vin-supply = <&main_12v>;
+
+               gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>;
+               enable-active-high;
+               regulator-always-on;
+       };
+
+       /* Powers the SATA Disk 1 regulator, which is enabled when a disk load is detected */
+       p12v_1: regulator-p12v_1 {
+               compatible = "regulator-fixed";
+               regulator-name = "P12V_1";
+               regulator-min-microvolt = <12000000>;
+               regulator-max-microvolt = <12000000>;
+               vin-supply = <&main_12v>;
+
+               gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>;
+               enable-active-high;
+               regulator-always-on;
+       };
+
        sound {
                model = "ODROID-HC4";
        };