linux-kernel - Re: [PATCH 1/3] arm64: dts: qcom: sdm845-oneplus: Don't mark ts supply boot-on

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Message-ID: <1ba91adc-5011-48cc-838e-7e02cf8b6d0b@oss.qualcomm.com>
Date: Tue, 18 Nov 2025 15:32:06 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: david@...t.cz, 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, phone-devel@...r.kernel.org,
        Casey Connolly <casey.connolly@...aro.org>
Subject: Re: [PATCH 1/3] arm64: dts: qcom: sdm845-oneplus: Don't mark ts
 supply boot-on

On 11/18/25 3:11 PM, David Heidelberg via B4 Relay wrote:
> From: Casey Connolly <casey.connolly@...aro.org>
> 
> The touchscreen 1.8v supply doesn't need to be enabled at boot, only
> when the driver probes. Remove the regulator-boot-on property.

This is not exactly what this property signifies (although it does
indeed turn the regulator on if it's not)

regulator-boot-on:
  description: bootloader/firmware enabled regulator.
    It's expected that this regulator was left on by the bootloader.
    If the bootloader didn't leave it on then OS should turn it on
    at boot but shouldn't prevent it from being turned off later.
    This property is intended to only be used for regulators where
    software cannot read the state of the regulator.

Konrad