linux-kernel - Re: [PATCH] arm64: dts: qcom: sc8280xp: correct usb phy power supply

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Message-ID: <2e240422-b964-42ce-b537-413b1d8ae07d@oss.qualcomm.com>
Date: Fri, 10 Jan 2025 13:28:13 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Pengyu Luo <mitltlatltl@...il.com>,
        Bjorn Andersson
 <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sc8280xp: correct usb phy power supply

On 10.01.2025 10:23 AM, Pengyu Luo wrote:
> On this platform, according to dsdt tables, usb{0,1} phy consume the
> following regulators. usb2 phy should be corrected also, usb2 in dsdt
> is a little complicated, so correct usb{0,1} only for now.
> 
> 	usb0	usb1	voltage	consumer
> hsphy:
> 	l1c	l1c	1.8v	vdda18-supply
> 	l9d	l4b	0.912v	vdda-pll-supply
> 	l7d	l13c	3.072v	vdda33-supply
> qmpphy:
> 	l4d	l3b	1.2v	vdda-phy-supply
> 	l6d	l6b	0.88v	vdda-pll-supply

Looking at the CRD schematics, it should instead be:

USB0	USB1	VOLT		NAME
L1B	L8D	0.9ish		PHY
L4D	L4D	1.2		PLL

I'm hoping I'm reading those right, it's not super obvious

Konrad