On Thu, Feb 23, 2023 at 9:44 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
>
> Add coupling for these regulators, as VSRAM_OTHER is used to power the
> GPU SRAM, and they have a strict voltage output relation to satisfy in
> order to ensure GPU stable operation.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> index df477eb89f21..c8b6e1a9605b 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
> @@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
> regulator-always-on;
> };
>
> +&mt6359_vsram_others_ldo_reg {
> + regulator-min-microvolt = <750000>;
> + regulator-max-microvolt = <850000>;
> + regulator-coupled-with = <&mt6315_7_vbuck1>;
> + regulator-coupled-max-spread = <10000>;
> +};
> +
> &mt6359_vufs_ldo_reg {
> regulator-always-on;
> };
> @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
> regulator-max-microvolt = <1193750>;
> regulator-enable-ramp-delay = <256>;
> regulator-allowed-modes = <0 1 2>;
> + regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
> + regulator-coupled-max-spread = <10000>;
Also fix the constraints here? And overriding the constraints should be
mentioned in the commit log.
> };
> };
> };
> --
> 2.39.2
>
