linux-kernel - Re: [PATCH v3] arm64: dts: qcom: x1e80100-qcp: Add WiFi/BT pwrseq

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Message-ID: <885fb0b5-fbd7-488a-8bf3-5a2d9368a7a0@oss.qualcomm.com>
Date: Mon, 24 Feb 2025 21:40:32 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Stephan Gerhold <stephan.gerhold@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Abel Vesa <abel.vesa@...aro.org>, Johan Hovold <johan@...nel.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: Re: [PATCH v3] arm64: dts: qcom: x1e80100-qcp: Add WiFi/BT pwrseq

On 17.02.2025 6:55 PM, Stephan Gerhold wrote:
> Add the WiFi/BT nodes for QCP and describe the regulators for the WCN7850
> combo chip using the new power sequencing bindings. All voltages are
> derived from chained fixed regulators controlled using a single GPIO.
> 
> The same setup also works for CRD (and likely most of the other X1E80100
> laptops). However, unlike the QCP they use soldered or removable M.2 cards
> supplied by a single 3.3V fixed regulator. The other necessary voltages are
> then derived inside the M.2 card. Describing this properly requires
> new bindings, so this commit only adds QCP for now.
> 
> Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

Konrad