linux-kernel - Re: [PATCH 1/2] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Add vdda-refgen supply for Glymur

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Message-ID: <20260209-magic-conscious-seahorse-b81c8b@quoll>
Date: Mon, 9 Feb 2026 09:06:23 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Qiang Yu <qiang.yu@....qualcomm.com>
Cc: Vinod Koul <vkoul@...nel.org>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Add
 vdda-refgen supply for Glymur

On Sun, Feb 08, 2026 at 08:49:39PM -0800, Qiang Yu wrote:
> The PCIe QMP PHYs on Glymur require stable reference voltage provided by
> refgen. The refgen itself requires two separate power supplies:
> vdda-refgen0p9 and vdda-refgen1p2.
> 
> Since there is no dedicated driver for REFGEN, add vdda-refgen0p9-supply

How does the driver matter for the bindings? If I add dedicated driver
for refgen, then I change the bindings?

There is qcom,sc8280xp-refgen-regulator so why there cannot be
qcom,x1e-refgen-regulator?


> and vdda-refgen1p2-supply properties to the PCIe PHY dt-bindings. Use
> conditional schema to restrict these properties to only Glymur PCIe QMP
> PHYs.

Best regards,
Krzysztof