linux-kernel - Re: [PATCH 4/4] arm64: dts: qcom: Add base PURWA-IOT-EVK board

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Message-ID: <catfa6d7qofd6uwkz3vepidznxa54btpw5a47rokugjdg2ogs3@qqqmo5suq36v>
Date: Tue, 23 Dec 2025 21:08:39 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Yijie Yang <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 4/4] arm64: dts: qcom: Add base PURWA-IOT-EVK board

On Tue, Dec 23, 2025 at 10:02:54AM +0800, Yijie Yang wrote:
> 
> 
> On 12/22/2025 5:22 PM, Dmitry Baryshkov wrote:
> > On Mon, Dec 22, 2025 at 02:03:29PM +0800, YijieYang wrote:
> > > From: Yijie Yang <yijie.yang@....qualcomm.com>
> > > 
> > > The PURWA-IOT-EVK is an evaluation platform for IoT products, composed of
> > > the Purwa IoT SoM and a carrier board. Together, they form a complete
> > > embedded system capable of booting to UART.
> > > 
> > > PURWA-IOT-EVK uses the PS8833 as a retimer for USB0, unlike HAMOA-IOT-EVK.
> > > Meanwhile, USB0 bypasses the SBU selector FSUSB42. As a result, the glink
> > > topology differs from that of HAMOA-IOT-EVK.
> > > 
> > > Make the following peripherals on the carrier board enabled:
> > > - UART
> > > - On-board regulators
> > > - Regulators on the SOM
> > > - PMIC GLINK
> > > - USB0 through USB6 and their PHYs
> > > - Embedded USB (EUSB) repeaters
> > > - USB Type-C mux
> > > - PCIe6a and its PHY
> > > - PCIe4 and its PHY
> > > - Reserved memory regions
> > > - Pinctrl
> > > - NVMe
> > > - ADSP, CDSP
> > > - WLAN, Bluetooth (M.2 interface)
> > > - USB DisplayPorts
> > > - Graphic
> > > - Audio
> > > 
> > > Signed-off-by: Yijie Yang <yijie.yang@....qualcomm.com>
> > > ---
> > >   arch/arm64/boot/dts/qcom/Makefile           |   1 +
> > >   arch/arm64/boot/dts/qcom/purwa-iot-evk.dts  | 100 ++++++++++++++++++++
> > >   arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi |  11 +++
> > >   3 files changed, 112 insertions(+)
> > >   create mode 100644 arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> > >   create mode 100644 arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi
> > > 
> > 
> > > +
> > > +&gpu_zap_shader {
> > > +	firmware-name = "qcom/x1e80100/gen71500_zap.mbn";
> > 
> > This wasn't tested.
> 
> It should be qcom/x1p42100/gen71500_zap.mbn. This has been tested locally.

The DT that you've sent wasn't tested. Please send a fixed version.

> 
> > 
> > > +};
> > > -- 
> > > 2.34.1
> > > 
> > 
> 
> -- 
> Best Regards,
> Yijie
> 

-- 
With best wishes
Dmitry