[PATCH] arm: dts: rk3399-puma: re-add vdd_log for uboot

[Kever Yang]

Hi Heiko,

Heiko Stuebner <heiko at sntech.de> 于2021年12月26日周日 20:46写道：
>
> The rk3399-puma board needs a 950mV vdd_log to work stable.
> This was already added in
> commit 77012e79ffc3 ("rockchip: rk3399-puma: Set VDD_LOG to 950 mV")
> but lost again with
> commit 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux")
>
> So to make puma stable again re-add the vdd_log pwm regulator.
> As it is not part of the mainline Linux dts right now, add it
> to the -u-boot dtsi for puma.
>
> Fixes: 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux")
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>

Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>  arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi b/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi
> index 29846c4b00..76eb51d2d7 100644
> --- a/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi
> +++ b/arch/arm/dts/rk3399-puma-haikou-u-boot.dtsi
> @@ -49,6 +49,17 @@
>                 regulator-min-microvolt = <1800000>;
>                 regulator-max-microvolt = <1800000>;
>         };
> +
> +       vdd_log: vdd-log {
> +               compatible = "pwm-regulator";
> +               pwms = <&pwm2 0 25000 1>;
> +               regulator-name = "vdd_log";
> +               regulator-min-microvolt = <800000>;
> +               regulator-max-microvolt = <1400000>;
> +               regulator-always-on;
> +               regulator-boot-on;
> +               regulator-init-microvolt = <950000>;
> +       };
>  };
>
>  &gpio1 {
> --
> 2.30.2
>