From: Yijie Yang <yijie.yang@oss.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@oss.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
@@ -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>
@@ -378,16 +378,12 @@ vreg_l3j_0p8: ldo3 {
 	};
 };
 
-&iris {
-	status = "okay";
-};
-
 &gpu {
 	status = "okay";
 };
 
 &gpu_zap_shader {
-	firmware-name = "qcom/x1e80100/gen70500_zap.mbn";
+	firmware-name = "qcom/x1p42100/gen71500_zap.mbn";
 };
 
 &pcie4 {
-- 
2.34.1

On Fri, Jan 09, 2026 at 03:59:53PM +0800, YijieYang wrote:
> From: Yijie Yang <yijie.yang@oss.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@oss.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

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@oss.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@oss.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