Re: [PATCH v2] arm64: dts: qcom: shikra-iqs-som: Correct PM8150 L10 voltage range
From: Abel Vesa
Date: Tue Sep 29 2026 - 09:20:07 EST
On 26-09-29 14:05:18, Rakesh Kota wrote:
> On Shikra IQS, the L10 rail supplies the SD card's VMMC. Its maximum
> voltage must be limited to 3.3 V because the derived VQMMC voltage on
> L2 supports up to approximately 3.3 V. Allowing VMMC to reach 3.544 V
> can drive VQMMC beyond its supported range, potentially causing SD
> bus bit errors and resulting in the voltage negotiation failure:
>
> l2: unsupportable voltage range: 3500000-3296000uV
>
> Reducing L10's maximum voltage to 3.3 V keeps both rails within their
> supported operating ranges.
>
> Co-developed-by: Nitin Rawat <nitin.rawat@xxxxxxxxxxxxxxxx>
> Signed-off-by: Nitin Rawat <nitin.rawat@xxxxxxxxxxxxxxxx>
> Signed-off-by: Rakesh Kota <rakesh.kota@xxxxxxxxxxxxxxxx>
No fixes tag?
The rest looks good to me, so:
Reviewed-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>