linux-kernel - Re: [PATCH 1/3] arm64: dts: qcom: sc8280xp-crd: enable wifi

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Message-ID: <ZtsZFKJgSaghf9HH@hovoldconsulting.com>
Date: Fri, 6 Sep 2024 17:00:36 +0200
From: Johan Hovold <johan@...nel.org>
To: Konrad Dybcio <konradybcio@...nel.org>
Cc: Bartosz Golaszewski <brgl@...ev.pl>,
	Bjorn Andersson <andersson@...nel.org>,
	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,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH 1/3] arm64: dts: qcom: sc8280xp-crd: enable wifi

On Tue, Aug 27, 2024 at 01:26:40PM +0200, Konrad Dybcio wrote:
> On 22.08.2024 4:56 PM, Johan Hovold wrote:
> > On Tue, Aug 13, 2024 at 09:06:36PM +0200, Bartosz Golaszewski wrote:
> >> From: Konrad Dybcio <konradybcio@...nel.org>

> >> +	vreg_s10b: regulator-s10b {
> >> +		compatible = "regulator-fixed";
> > 
> > I don't think this is a fixed regulator.
> 
> It effectively is

If it's an output of one of the pmic as the name suggests and as it is
on the X13s, I think it should be described as such.
 
> >> +
> >> +		regulator-name = "VREG_S10B";
> >> +		regulator-min-microvolt = <1800000>;
> >> +		regulator-max-microvolt = <1800000>;
> >> +
> >> +		regulator-always-on;
> >> +		regulator-boot-on;
> >> +	};
 
> >> +	wlan_en: wlan-en-state {
> >> +		pins = "gpio134";
> >> +		function = "gpio";
> >> +		drive-strength = <8>;
> > 
> > Why increase the drive strength?
> 
> This is what's used on Windows, for lack of a better idea, not sure
> if this is actually necessary

If this indeed is what the fw configures it as then I guess it's fine to
keep as-is for now.

Johan