linux-kernel - Re: [PATCH v3 3/4] arm64: dts: qcom: Add PURWA-IOT-SOM platform

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Message-ID: <nfhjbfqflsrye7hqbtgwr5hwkwdtq5z4tbvnta7lk7p7jtvhl4@zbttn6coc7br>
Date: Tue, 13 Jan 2026 12:47:44 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: YijieYang <yijie.yang@....qualcomm.com>
Cc: 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
Subject: Re: [PATCH v3 3/4] arm64: dts: qcom: Add PURWA-IOT-SOM platform

On Tue, Jan 13, 2026 at 06:28:15PM +0800, YijieYang wrote:
> From: Yijie Yang <yijie.yang@....qualcomm.com>
> 
> The PURWA-IOT-SOM is a compact computing module that integrates a System
> on Chip (SoC) — specifically the x1p42100 — along with essential
> components optimized for IoT applications. It is designed to be mounted on
> carrier boards, enabling the development of complete embedded systems.
> 
> Make the following peripherals on the SOM enabled:
> - Regulators on the SOM
> - Reserved memory regions
> - PCIe3, PCIe4, PCIe5, PCIe6a
> - USB0 through USB6 and their PHYs
> - ADSP, CDSP
> - Graphic
> 
> Signed-off-by: Yijie Yang <yijie.yang@....qualcomm.com>
> ---
>  .../qcom/{hamoa-iot-som.dtsi => purwa-iot-som.dtsi}   | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
>  copy arch/arm64/boot/dts/qcom/{hamoa-iot-som.dtsi => purwa-iot-som.dtsi} (99%)
> 
> diff --git a/arch/arm64/boot/dts/qcom/hamoa-iot-som.dtsi b/arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi
> similarity index 99%
> copy from arch/arm64/boot/dts/qcom/hamoa-iot-som.dtsi
> copy to arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi
> index b8e3e04a6fbd..fb90beb1096f 100644
> --- a/arch/arm64/boot/dts/qcom/hamoa-iot-som.dtsi
> +++ b/arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi
> @@ -3,11 +3,14 @@
>   * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
>   */
>  
> -#include "hamoa.dtsi"
> +#include "purwa.dtsi"
>  #include "hamoa-pmics.dtsi"
>  #include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
>  
> +/delete-node/ &pmc8380_6;
> +/delete-node/ &pmc8380_6_thermal;
> +
>  / {
>  	reserved-memory {
>  		linux,cma {
> @@ -378,16 +381,12 @@ vreg_l3j_0p8: ldo3 {
>  	};
>  };
>  
> -&iris {
> -	status = "okay";
> -};

Why?

> -
>  &gpu {
>  	status = "okay";
>  };
>  
>  &gpu_zap_shader {
> -	firmware-name = "qcom/x1e80100/gen70500_zap.mbn";
> +	firmware-name = "qcom/x1p42100/gen71500_zap.mbn";
>  };
>  
>  &pcie3 {
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry