linux-kernel - Re: [PATCH 6/9] arm64: dts: qcom: sc8280xp-crd: enable WiFi controller

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Date:   Fri, 11 Nov 2022 14:40:21 -0600
From:   Bjorn Andersson <andersson@...nel.org>
To:     Johan Hovold <johan@...nel.org>
Cc:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Johan Hovold <johan+linaro@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/9] arm64: dts: qcom: sc8280xp-crd: enable WiFi
 controller

On Fri, Nov 11, 2022 at 05:27:46PM +0100, Johan Hovold wrote:
> On Thu, Nov 10, 2022 at 05:05:13PM +0530, Manivannan Sadhasivam wrote:
> > On Thu, Nov 10, 2022 at 11:35:55AM +0100, Johan Hovold wrote:
> > > Enable the Qualcomm QCNFA765 Wireless Network Adapter connected to
> > > PCIe4.
> > > 
> > > Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> > > ---
> > >  arch/arm64/boot/dts/qcom/sc8280xp-crd.dts | 65 +++++++++++++++++++++++
> > >  1 file changed, 65 insertions(+)
> > > 
> > > diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> > > index 5b9e37a16f9f..ab5b0aadeead 100644
> > > --- a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> > > +++ b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> > > @@ -81,6 +81,22 @@ vreg_misc_3p3: regulator-misc-3p3 {
> > >  		regulator-always-on;
> > >  	};
> > >  
> > > +	vreg_wlan: regulator-wlan {
> > > +		compatible = "regulator-fixed";
> > > +
> > > +		regulator-name = "VCC_WLAN_3R9";
> > > +		regulator-min-microvolt = <3900000>;
> > > +		regulator-max-microvolt = <3900000>;
> > > +
> > > +		gpio = <&pmr735a_gpios 1 GPIO_ACTIVE_HIGH>;
> > > +		enable-active-high;
> > > +
> > > +		pinctrl-names = "default";
> > > +		pinctrl-0 = <&hastings_reg_en>;
> > 
> > Hastings is the family name of QCA639x WLAN chipsets. I don't think it would be
> > applicable here. Please use "wlan_reg_en" as that matches the convention used
> > throughout this file.
> 
> The pin name here comes from the schematics, which is what we should use
> for naming when we can.
> 

Following the naming in the schematics is the right thing to do.

Regards,
Bjorn