linux-kernel - Re: [PATCH v2 4/4] arm64: dts: qcom: Add base PURWA-IOT-EVK board

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Message-ID: <ak6xsow3cobhe64y2koa4v7w5dkdc4v3zlmpokws4nxmu5c6rt@kdgm2oqxxvcl>
Date: Mon, 12 Jan 2026 07:00:27 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Yijie Yang <yijie.yang@....qualcomm.com>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>, andersson@...nel.org,
        konradybcio@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
        conor+dt@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        krzysztof.kozlowski@....qualcomm.com
Subject: Re: [PATCH v2 4/4] arm64: dts: qcom: Add base PURWA-IOT-EVK board

On Mon, Jan 12, 2026 at 11:12:09AM +0800, Yijie Yang wrote:
> 
> 
> On 1/9/2026 7:29 PM, Konrad Dybcio wrote:
> > On 1/9/26 8:59 AM, YijieYang wrote:
> > > From: Yijie Yang <yijie.yang@....qualcomm.com>
> > > 
> > > The PURWA-IOT-EVK is an evaluation platform for IoT products, composed of
> > > the Purwa IoT SoM and a carrier board. Together, they form a complete
> > > embedded system capable of booting to UART.
> > 
> > [...]
> > 
> > > -	backlight: backlight {
> > > -		compatible = "pwm-backlight";
> > > -		pwms = <&pmk8550_pwm 0 5000000>;
> > > -		enable-gpios = <&pmc8380_3_gpios 4 GPIO_ACTIVE_HIGH>;
> > > -		power-supply = <&vreg_edp_bl>;
> > > -
> > > -		pinctrl-0 = <&edp_bl_en>, <&edp_bl_pwm>;
> > > -		pinctrl-names = "default";
> > > -	};
> > 
> > Is the backlight infra different on the Purwa IoT EVK?
> 
> As you can see, this Purwa file was copied from the latest
> hamoa-iot-evk.dts. However, not all nodes have been verified on Purwa.
> Therefore, I need to retain only the functions that work correctly and keep
> them aligned with the nodes from my initial version. The deleted nodes will
> be updated later by the respective authors from different technical areas.

Please, only delete nodes which are not present on the Purwa IoT EVK.

> 
> > 
> > > -
> > >   	wcd938x: audio-codec {
> > >   		compatible = "qcom,wcd9385-codec";
> > > @@ -60,32 +50,6 @@ chosen {
> > >   		stdout-path = "serial0:115200n8";
> > >   	};
> > > -	connector3 {
> > > -		compatible = "usb-a-connector";
> > > -		label = "USB-3-Type-A";
> > > -		power-role = "source";
> > > -
> > > -		vbus-supply = <&regulator_usb3_vbus>;
> > > -
> > > -		port {
> > > -			connector_3_in: endpoint {
> > > -			};
> > > -		};
> > > -	};
> > > -
> > > -	connector6 {
> > > -		compatible = "usb-a-connector";
> > > -		label = "USB-6-Type-A";
> > > -		power-role = "source";
> > > -
> > > -		vbus-supply = <&regulator_usb6_vbus>;
> > > -
> > > -		port {
> > > -			connector_4_in: endpoint {
> > > -			};
> > > -		};
> > > -	};
> > 
> > Are there no Type-A ports?
> 
> ditto

?

> 
> > > @@ -920,23 +886,6 @@ &mdss_dp3_phy {
> > >   	status = "okay";
> > >   };
> > > -&pcie4_port0 {
> > > -	wifi@0 {
> > > -		compatible = "pci17cb,1107";
> > > -		reg = <0x10000 0x0 0x0 0x0 0x0>;
> > > -
> > > -		vddaon-supply = <&vreg_pmu_aon_0p59>;
> > > -		vddwlcx-supply = <&vreg_pmu_wlcx_0p8>;
> > > -		vddwlmx-supply = <&vreg_pmu_wlmx_0p85>;
> > > -		vddrfacmn-supply = <&vreg_pmu_rfa_cmn>;
> > > -		vddrfa0p8-supply = <&vreg_pmu_rfa_0p8>;
> > > -		vddrfa1p2-supply = <&vreg_pmu_rfa_1p2>;
> > > -		vddrfa1p8-supply = <&vreg_pmu_rfa_1p8>;
> > > -		vddpcie0p9-supply = <&vreg_pmu_pcie_0p9>;
> > > -		vddpcie1p8-supply = <&vreg_pmu_pcie_1p8>;
> > > -	};
> > > -};
> > 
> > Is the Wi-Fi solution different?
> 
> ditto

NAK

-- 
With best wishes
Dmitry