On Tue, Feb 6, 2018 at 12:49 PM, Icenowy Zheng <icen...@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 <icen...@aosc.io>
Reviewed-by: Chen-Yu Tsai <w...@csie.org>
However,
> ---
> No changes in v2.
>
> 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..34fc35737090 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 {
You might want to change the node name to something a bit more specific,
like vdd-cpux-regulator. This would decrease the chance of name collisions,
either from other additions or device tree overlays.
ChenYu
> + 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 */
> + enable-active-high;
> + gpios-states = <0x1>;
> + states = <1100000 0x0
> + 1300000 0x1>;
> + };
> +};
> +
> +&cpu0 {
> + cpu-supply = <®_sy8113b>;
> };
>
> &ehci0 {
> --
> 2.15.1
>
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