linux-kernel - Re: [PATCH v2 3/4] arm64: dts: qcom: Add PURWA-IOT-SOM platform

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Message-ID: <wkv4sl6hsv3dvqteh5ccliet46l7br5yzsgg27qsopgnldufly@r5vkvk4dyrn3>
Date: Fri, 9 Jan 2026 14:10:10 +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,
        krzysztof.kozlowski@....qualcomm.com
Subject: Re: [PATCH v2 3/4] arm64: dts: qcom: Add PURWA-IOT-SOM platform

On Fri, Jan 09, 2026 at 03:59:53PM +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
> - PCIe6a and its PHY
> - PCIe4 and its PHY
> - USB0 through USB6 and their PHYs
> - ADSP, CDSP
> - Graphic
> 
> Signed-off-by: Yijie Yang <yijie.yang@....qualcomm.com>
> ---
>  .../dts/qcom/{hamoa-iot-som.dtsi => purwa-iot-som.dtsi}   | 8 ++------
>  1 file changed, 2 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 4a69852e9176..16f11a81163e 100644
> --- a/arch/arm64/boot/dts/qcom/hamoa-iot-som.dtsi
> +++ b/arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi

I remember, we were told that there are PMIC differences too. Where are
they handled?

> @@ -3,7 +3,7 @@
>   * 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>

-- 
With best wishes
Dmitry