Re: [PATCH v2 13/14] arm64: dts: qcom: ipq5018: Enable USB Super-Speed PHY

Konrad Dybcio <[email protected]> Mon, 24 Aug 2026 11:03:53 +0200

Newsgroups	org.kernel.vger.linux-kernel,org.infradead.lists.linux-phy,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-usb
Message-ID	<[email protected]>

On 8/12/26 11:34 AM, George Moussalem via B4 Relay wrote:
> From: George Moussalem <[email protected]>
> 
> Add the 5V supply regulator and enable USB Super-Speed PHY support.
> 
> Signed-off-by: George Moussalem <[email protected]>
> ---
>  arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts b/arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts
> index 8efb2b21ed9e..ca29f271e673 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts
> +++ b/arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts
> @@ -22,6 +22,14 @@ aliases {
>  	chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
> +
> +	regulator_fixed_5p0: regulator-s0500 {
> +		compatible = "regulator-fixed";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		regulator-name = "fixed_5p0";
> +		gpios = <&tlmm 24 GPIO_ACTIVE_LOW>;
> +	};
>  };
>  
>  &blsp1_uart1 {
> @@ -119,6 +127,12 @@ &usbphy0 {
>  	status = "okay";
>  };
>  
> +&usbphy1 {
> +	vdd-supply = <&regulator_fixed_5p0>;

I think we'd see fireworks if this chip got a 5v input. I'd assume
this probably needs the usual-for-qcom 0.9 V and 1.2 V regulator pair,
but perhaps +Kathiravan can confirm whether this holds for the router
SoCs too..

Konrad