[PATCH] arm64: dts: qcom: sm8750-mtp: Set sufficient voltage for panel nt37801

[Ayushi Makhija]

On 3/24/2026 7:34 AM, Bjorn Andersson wrote:
> On Mon, Mar 23, 2026 at 03:52:29PM +0530, Ayushi Makhija wrote:
>> The NT37801 Sepc V1.0 chapter "5.7.1 Power On Sequence" states
>> VDDI=1.65V~1.95V, so set sufficient voltage for panel nt37801.
>>
> 
> Please add Fixes: tag.

Hi Bjorn,

Sure, will add in new patchset.

> 
>> Signed-off-by: Ayushi Makhija <quic_amakhija at quicinc.com>
> 
> Please start using your oss.qualcomm.com address.
> 
>> ---
>>  arch/arm64/boot/dts/qcom/sm8750-mtp.dts | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
>> index 3837f6785320..6ba4e69bf377 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
>> +++ b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
>> @@ -462,7 +462,7 @@ vreg_l11b_1p0: ldo11 {
>>  
>>  		vreg_l12b_1p8: ldo12 {
>>  			regulator-name = "vreg_l12b_1p8";
>> -			regulator-min-microvolt = <1200000>;
>> +			regulator-min-microvolt = <1650000>;
> 
> Are you sure it's not supposed to be 1.8V, given the name of the rail?
> 
> Regards,
> Bjorn
> 

There was already discussion regarding the minimum voltage for this regulator for sm8550 target
on other upstream patch. Attaching the link of the patch.


This values is according to the NT37801 panel sec
"The NT37801 Sepc V1.0 chapter "5.7.1 Power On Sequence" states 
VDDI=1.65V~1.95V."

Thanks,
Ayushi

>>  			regulator-max-microvolt = <1800000>;
>>  			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
>>  			regulator-allow-set-load;
>> -- 
>> 2.34.1
>>
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