Re: [PATCH v2 13/14] ARM: dts: sun8i: Add gpio-regulator used on Orange Pi One

[Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>]

[-- Attachment #1: Type: text/plain, Size: 1489 bytes --]

On Sat, Jun 25, 2016 at 05:45:10AM +0200, megous-5qf/QAjKc83QT0dZR+AlfA@public.gmane.org wrote:
> From: Ondrej Jirman <megous-5qf/QAjKc83QT0dZR+AlfA@public.gmane.org>
> 
> Xulong Orange Pi One uses GPIO based regulator that
> switches between two voltages: 1.1V and 1.3V. The
> regulator is controlled from the PL6 pin.
> 
> Signed-off-by: Ondrej Jirman <megous-5qf/QAjKc83QT0dZR+AlfA@public.gmane.org>
> ---
> v2
> - add missing pinctrl-names for gpio-regulator
> ---
>  arch/arm/boot/dts/sun8i-h3-orangepi-one.dts | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts b/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts
> index 0adf932..b1bd6b0 100644
> --- a/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts
> +++ b/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts
> @@ -88,6 +88,25 @@
>  			gpios = <&r_pio 0 3 GPIO_ACTIVE_LOW>;
>  		};
>  	};
> +
> +	vdd_soc: gpio-regulator {
> +		compatible = "regulator-gpio";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vdd_reg_r_opc>;
> +
> +		regulator-name = "soc-vdd-supply";
> +		regulator-min-microvolt = <1100000>;
> +		regulator-max-microvolt = <1300000>;
> +		regulator-boot-on;
> +		regulator-type = "voltage";

It should be marked as always-on.

Otherwise, if the cpufreq driver is not enabled, the regulator will be
shutdown, which is not that great :)

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com