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

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Message-ID: <eb3e393b-5a5f-4694-b269-c84d937175db@oss.qualcomm.com>
Date: Mon, 12 Jan 2026 11:02:48 +0800
From: Yijie Yang <yijie.yang@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....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 1/9/2026 8:10 PM, Dmitry Baryshkov wrote:
> 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?

I forgot to remove the unused PMIC node from the SOM file for Purwa.

> 
>> @@ -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>
> 

-- 
Best Regards,
Yijie