[PATCH 5/5] ARM: sun8i: h2+: add SY8113B regulator used by Orange Pi Zero board

[Icenowy Zheng]

Orange Pi Zero board has a SY8113B regulator, which is controlled via
GPIO and capable of outputing 1.1V when the PL6 GPIO is set to output 0
or 1.3V when the PL6 GPIO is set to input or output 1, and the output is
the power supply of the ARM cores in H2+ SoC.

Add the device tree node of this regulator and set the cpu's cpu-supply
property to it.

Signed-off-by: Icenowy Zheng <icen...@aosc.io>
---
 arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts 
b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
index 9e8b082c134f..8f6acca7d12d 100644
--- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
+++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
@@ -93,6 +93,27 @@
                reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>;
                post-power-on-delay-ms = <200>;
        };
+
+       reg_sy8113b: gpio-regulator {
+               compatible = "regulator-gpio";
+
+               regulator-name = "vdd-cpux";
+               regulator-type = "voltage";
+               regulator-boot-on;
+               regulator-always-on;
+               regulator-min-microvolt = <1100000>;
+               regulator-max-microvolt = <1300000>;
+               regulator-ramp-delay = <50>; /* 4ms */
+
+               gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
+               gpios-states = <0x1>;
+               states = <1100000 0x0
+                         1300000 0x1>;
+       };
+};
+
+&cpu0 {
+       cpu-supply = <&reg_sy8113b>;
 };
 
 &ehci0 {
-- 
2.12.2