Il 24/02/23 10:58, Chen-Yu Tsai ha scritto:
> On Thu, Feb 23, 2023 at 9:44 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> 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@collabora.com>
>> ---
>> 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.
>
There's no constraint to fix, though. The current ones are just fine.
I'll mention the constraints override for vsram_others in v3!
Regards,
Angelo
>> };
>> };
>> };
>> --
>> 2.39.2
>>