On Fri, May 10, 2024 at 08:06:25PM +0800, Alina Yu wrote:
> Since there is no way to check is ldo is adjustable or not.
> As discussing in v2 series, 'richtek,fixed-microvolt' is added for that.
> user is supposed to know whether vout of ldo is adjustable.
>
> Signed-off-by: Alina Yu <alina_yu@xxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
> index 609c066..6212f44 100644
> --- a/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
> +++ b/Documentation/devicetree/bindings/regulator/richtek,rtq2208.yaml
> @@ -75,6 +75,13 @@ properties:
> description:
> regulator description for ldo[1-2].
>
> + properties:
> + richtek,fixed-microvolt:
> + description: |
> + If it exists, the voltage is unadjustable.
> + There is no risk-free method for software to determine whether the ldo vout is fixed or not.
> + Therefore, it can only be done in this way.
> +
> required:
> - compatible
> - reg
> @@ -177,6 +184,7 @@ examples:
> };
> };
> ldo1 {
> + richtek,fixed-microvolt = <1200000>;
> regulator-min-microvolt = <1200000>;
> regulator-max-microvolt = <1200000>;
I'm dumb and this example seemed odd to me. Can you explain to me why
it is not sufficient to set min-microvolt == max-microvolt to achieve
the same thing?
Cheers,
Conor.
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