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[09/10] ARM: sun8i: h2+: add SY8113B regulator used by Orange Pi Zero board

Message ID 20170723102749.17323-10-icenowy@aosc.io (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Icenowy Zheng July 23, 2017, 10:27 a.m. UTC
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 <icenowy@aosc.io>
---
 arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

Comments

Chen-Yu Tsai July 24, 2017, 4:09 a.m. UTC | #1
On Sun, Jul 23, 2017 at 6:27 PM, Icenowy Zheng <icenowy@aosc.io> wrote:
> 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 <icenowy@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 6713d0f2b3f4..28b4433bd7f7 100644
> --- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> +++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
> @@ -94,6 +94,27 @@
>                 reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>;
>                 post-power-on-delay-ms = <200>;
>         };
> +
> +       reg_sy8113b: gpio-regulator {
> +               compatible = "regulator-gpio";
> +

No need for the newline.

> +               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 */

You should also add "enable-active-high". The driver might not
honor the GPIO_ACTIVE_HIGH flag. AFAIK this was a problem with
the old GPIO API.

ChenYu

> +
> +               gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
> +               gpios-states = <0x1>;
> +               states = <1100000 0x0
> +                         1300000 0x1>;
> +       };
> +};
> +
> +&cpu0 {
> +       cpu-supply = <&reg_sy8113b>;
>  };
>
>  &ehci0 {
> --
> 2.13.0
>
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diff mbox

Patch

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 6713d0f2b3f4..28b4433bd7f7 100644
--- a/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
+++ b/arch/arm/boot/dts/sun8i-h2-plus-orangepi-zero.dts
@@ -94,6 +94,27 @@ 
 		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 {