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

[Yijie Yang]

On 1/14/2026 1:50 AM, Dmitry Baryshkov wrote:
> On Tue, Jan 13, 2026 at 12:29:43PM +0100, Konrad Dybcio wrote:
> > On 1/13/26 11:47 AM, Dmitry Baryshkov wrote:
> > > On Tue, Jan 13, 2026 at 06:28:15PM +0800, YijieYang wrote:
> > > > From: Yijie Yang <yijie.yang@xxxxxxxxxxxxxxxx>
> > > >
> > > > 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@xxxxxxxxxxxxxxxx>
> > > > ---
> > > >   .../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?
> >
> > Purwa has a slightly different Iris hw version (8.1.2 on Hamoa, 8.1.11 on Purwa)
> > which I would assume is slighly weaker, plus there's probably a freqtbl change
> >
> > Let's take this as-is and enable it later
>
> => commit message, please.

Will do.

> > +Vikash, Dikshita this seems like a really low-hanging fruit, could you take
> > a look at Purwa support in Iris?
> >
> > Konrad

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Best Regards,
Yijie