Re: [PATCH 14/28] arm64: dts: qcom: sm7225-fairphone-fp4: Fix swapped USB QMP PHY vdda-phy/vdda-pll supplies

[Luca Weiss]

On Mon Aug 3, 2026 at 8:34 AM CEST, Manivannan Sadhasivam via B4 Relay wrote:
> From: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>
>
> The QMP PHY expects the vdda-phy supply to be around 0.88V and the
> vdda-pll supply to be 1.2V. But these two supplies are swapped for the
> USB QMP PHY on this board, feeding 1.2V to vdda-phy and 0.9V to
> vdda-pll.
>
> Fix it by swapping the two supplies back.
>
> Fixes: 4cbea668767d ("arm64: dts: qcom: sm7225: Add device tree for Fairphone 4")
> Reported-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
> Assisted-by: Claude:opus-4-8
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> index 23f950067a08..bea82cbc2c88 100644
> --- a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> +++ b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts
> @@ -1247,8 +1247,8 @@ &usb_1_hsphy {
>  };
>  
>  &usb_1_qmpphy {
> -	vdda-phy-supply = <&vreg_l22a>;
> -	vdda-pll-supply = <&vreg_l16a>;
> +	vdda-phy-supply = <&vreg_l16a>;
> +	vdda-pll-supply = <&vreg_l22a>;

Schematics confirm:
* VREG_L16A_0P88 <-> VDD_A_USBSSDP_0P9
* VREG_L22A_1P2 <-> VDD_A_USBSSDP_1P2

So this also matches.

Reviewed-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>

>  
>  	status = "okay";
>  };