Re: [PATCH 4/6] arm64: dts: qcom: qcs6490-radxa-dragon-q6a: Add regulator supplies and disable EUD

[Dmitry Baryshkov]

On Fri, May 22, 2026 at 06:06:43PM +1200, Graham O'Connor wrote:
> Add missing regulator supplies for qfprom and the PCIe controllers.
> The qfprom node requires vcc-supply for correct eFuse reading. The
> PCIe controllers require vdda and vddpe-3v3 supplies for the PHY and
> connector power rails.

vddpe-3v3 is a legacy property for specifying power rails for connected
devices rather than the controller.

> 
> Disable the Embedded USB Debugger (EUD) as it conflicts with normal
> USB operation on this board.

Separate commot please, with the description of the conflict.

> 
> Tested on Radxa Dragon Q6A (QCS6490)
> 
> Signed-off-by: Graham O'Connor <graham.oconnor@xxxxxxxxx>
> ---
>  .../dts/qcom/qcs6490-radxa-dragon-q6a.dts     | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts b/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
> index bb5a42b03..4003837ad 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
> @@ -1093,3 +1093,23 @@ &sdc2_data {
>  	bias-pull-up;
>  	drive-strength = <10>;
>  };
> +
> +/* Provide required regulator supplies for qfprom and PCIe controllers */
> +&qfprom {
> +	vcc-supply = <&vreg_l1c_1p8>;
> +};

Please keep the nodes sorted.

> +
> +&pcie0 {
> +	vdda-supply = <&vreg_l1c_1p8>;
> +	vddpe-3v3-supply = <&vreg_bob_3p296>;
> +};
> +
> +&pcie1 {
> +	vdda-supply = <&vreg_l1c_1p8>;
> +	vddpe-3v3-supply = <&vreg_bob_3p296>;
> +};
> +
> +/* Disable EUD as it conflicts with USB operation */
> +&eud {
> +	status = "disabled";
> +};
> -- 
> 2.53.0
> 

-- 
With best wishes
Dmitry