Re: [PATCH v2 1/4] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Add vdda-refgen and refgen supply properties

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 9/16/26 12:20 PM, Ziyue Zhang wrote:
> QCS8300 and SA8775p PCIe PHYs require dedicated vdda-refgen and refgen
> LDO supplies for QREF to provide a stable reference clock. Without these
> supplies, the PCIe PHYs cannot work properly. Mark them as required for
> the affected compatibles even though it breaks ABI.
> 
> vdda-refgen-supply is required for all three QCS8300 and SA8775p PHY
> compatibles. refgen-supply is required for QCS8300 only, as a workaround
> for a hardware issue where QREF actually depends on refgen3 rather than
> refgen2 as documented, so the PHY driver votes for refgen3 directly via
> this supply.
> 
> Signed-off-by: Ziyue Zhang <ziyue.zhang@oss.qualcomm.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
> ---
>  .../phy/qcom,sc8280xp-qmp-pcie-phy.yaml       | 27 +++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> index b353b7bfb839..bd4c98784142 100644
> --- a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml
> @@ -94,6 +94,11 @@ properties:
>  
>    vdda-qref-supply: true
>  
> +  vdda-refgen-supply: true

There's 2 REFGEN supplies (0p9, 1p2) and the sister Glymur patchset
defines both.

Konrad