Re: [PATCH v5 0/4] Initial patch set for PURWA-IOT-EVK

[Jie Gan <jie.gan@oss.qualcomm.com>]

On 2/4/2026 10:52 AM, Yijie Yang wrote:
> 
> 
> On 2/4/2026 10:38 AM, Dmitry Baryshkov wrote:
>> On Wed, Feb 04, 2026 at 09:42:04AM +0800, Yijie Yang wrote:
>>>
>>>
>>> On 2/4/2026 1:37 AM, Rob Herring wrote:
>>>>
>>>> On Mon, 02 Feb 2026 15:35:44 +0800, YijieYang wrote:
>>>>> From: Yijie Yang <yijie.yang@oss.qualcomm.com>
>>>>>
>>>>> Introduce the device tree, DT bindings, and driver updates required 
>>>>> to enable
>>>>> the bring-up of the PURWA-IOT-EVK evaluation board. Focus is on two 
>>>>> key
>>>>> hardware components:
>>>>>
>>>>> PURWA-IOT-SOM — A compact System-on-Module integrating the SoC, 
>>>>> GPIOs, and
>>>>> PMICs. Designed for modularity, it can pair with various carrier 
>>>>> boards to
>>>>> support diverse use cases.
>>>>>
>>>>> PURWA-IOT-EVK — A carrier board tailored for IoT scenarios, providing
>>>>> essential peripherals such as UART, on-board PMICs, and USB 
>>>>> components.
>>>>>
>>>>> Together, these components form a flexible and scalable platform. 
>>>>> Initial
>>>>> functionality is achieved through proper device tree configuration 
>>>>> and driver
>>>>> support.
>>>>>
>>>>> The PURWA-IOT-EVK/SOM shares most of its hardware design with
>>>>> HAMOA-IOT-EVK/SOM, differing primarily in the BOM. Consequently, 
>>>>> the DTS files
>>>>> are largely similar. Both platforms belong to Qualcomm’s IQ-X 
>>>>> family. For more
>>>>> details on the IQ-X series, see:
>>>>> https://www.qualcomm.com/internet-of-things/products/iq-x-series
>>>>>
>>>>> Hardware differences between HAMOA-IOT and PURWA-IOT:
>>>>> - Display — PURWA uses a different number of clocks and frequency 
>>>>> compared to
>>>>>     HAMOA.
>>>>> - GPU — PURWA integrates a different GPU.
>>>>> - USB0 — PURWA uses a PS8833 retimer, while HAMOA employs an 
>>>>> FSUSB42 as the
>>>>>     SBU switch.
>>>>>
>>>>> Features added and 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
>>>>> - PCIe3, PCIe4, PCIe5, PCIe6a
>>>>> - Reserved memory regions
>>>>> - Pinctrl
>>>>> - NVMe
>>>>> - ADSP, CDSP
>>>>> - WLAN, Bluetooth (M.2 interface)
>>>>> - USB DisplayPort and eDP
>>>>> - Graphics
>>>>> - Audio
>>>>> - TPM
>>>>>
>>>>> Signed-off-by: Yijie Yang <yijie.yang@oss.qualcomm.com>
>>>>> ---
>>>>> Changes in v2:
>>>>> - Update the GPU firmware path.
>>>>> - Update the description in the cover letter.
>>>>> - Reorder the patches.
>>>>> - Use separate DTS files for Purwa and Hamoa.
>>>>> - Update base commit.
>>>>> - Link to v1: https://lore.kernel.org/all/20251222-purwa- 
>>>>> v1-0-14ab9316e5ff@oss.qualcomm.com/
>>>>>
>>>>> Changes in v3:
>>>>> - Delete unused PMIC and thermal nodes.
>>>>> - Add WiFi node.
>>>>> - Add display backlight node.
>>>>> - Add connectors and VBUS regulators for USB3 and USB6.
>>>>> - Enable PCIe3 and PCIe5; add PCIe ports along with reset and wake- 
>>>>> up GPIOs.
>>>>> - Link to v2: https://lore.kernel.org/r/20260109-purwa-v2-0- 
>>>>> f39ee10684cb@oss.qualcomm.com
>>>>>
>>>>> Changes in v4:
>>>>> - Enable TPM.
>>>>> - Update the descriptions for video and the USB OF graph.
>>>>> - Link to v3: https://lore.kernel.org/all/20260113-purwa- 
>>>>> v3-0-16eefacbdce9@oss.qualcomm.com/
>>>>>
>>>>> Changes in v5:
>>>>> - Reorder nodes in purwa-iot-evk.dts.
>>>>> - Update base commit.
>>>>> - The DT binding change that fixes the DT warning for pcie3_phy is 
>>>>> located at: https://lore.kernel.org/linux-arm-msm/20260119-topic- 
>>>>> purwa_phy_shutup_warning-v1-1-997a692b31c6@oss.qualcomm.com/T/#u
>>>>> - Link to v4: https://lore.kernel.org/r/20260116-purwa- 
>>>>> v4-0-89b2adae9f09@oss.qualcomm.com
>>>>>
>>>>> ---
>>>>> Yijie Yang (4):
>>>>>         dt-bindings: arm: qcom: Document PURWA-IOT-EVK board
>>>>>         firmware: qcom: scm: Allow QSEECOM on PURWA-IOT-EVK
>>>>>         arm64: dts: qcom: Add PURWA-IOT-SOM platform
>>>>>         arm64: dts: qcom: Add base PURWA-IOT-EVK board
>>>>>
>>>>>    Documentation/devicetree/bindings/arm/qcom.yaml |    6 +
>>>>>    arch/arm64/boot/dts/qcom/Makefile               |    1 +
>>>>>    arch/arm64/boot/dts/qcom/purwa-iot-evk.dts      | 1549 +++++++++ 
>>>>> ++++++++++++++
>>>>>    arch/arm64/boot/dts/qcom/purwa-iot-som.dtsi     |  685 ++++++++++
>>>>>    drivers/firmware/qcom/qcom_scm.c                |    1 +
>>>>>    5 files changed, 2242 insertions(+)
>>>>> ---
>>>>> base-commit: 6267b2da1b2d04847a1a8f441e138bc4a89435ee
>>>>> change-id: 20251113-purwa-907ec75b4959
>>>>>
>>>>> Best regards,
>>>>> -- 
>>>>> Yijie Yang <yijie.yang@oss.qualcomm.com>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> My bot found DTB warnings on the .dts/.dtsi files added or changed in
>>>> this series.
>>>>
>>>> Some warnings may be existing warnings. Consider fixing existing
>>>> warnings before adding new features.
>>>>
>>>> Perhaps the warnings are fixed by another series. If that is the case,
>>>> please set the base commit and any dependencies for the series using
>>>> "b4".
>>>>
>>>> Ultimately, it is up to the platform maintainer whether these warnings
>>>> are acceptable or not.
>>>>
>>>> If you already ran DT checks and didn't see these error(s), then
>>>> make sure dt-schema is up to date:
>>>>
>>>>     pip3 install dtschema --upgrade
>>>>
>>>>
>>>> This patch series was applied (using b4) to base:
>>>>    Base: 6267b2da1b2d04847a1a8f441e138bc4a89435ee (use --merge-base 
>>>> to override)
>>>>
>>>> If this is not the correct base, please add 'base-commit' tag
>>>> (or use b4 which does this automatically)
>>>>
>>>>
>>>> New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/ 
>>>> qcom/' for 20260202-purwa-v5-0-1f5a93578802@oss.qualcomm.com:
>>>>
>>>> arch/arm64/boot/dts/qcom/purwa-iot-evk.dtb: phy@1bd4000 
>>>> (qcom,x1p42100-qmp-gen4x4-pcie-phy): 'qcom,4ln-config-sel' is a 
>>>> required property
>>>>     from schema $id: http://devicetree.org/schemas/phy/ 
>>>> qcom,sc8280xp-qmp-pcie-phy.yaml
>>>>
>>>
>>> I have already listed the fix in the cover letter:
>>> https://lore.kernel.org/linux-arm-msm/20260119-topic- 
>>> purwa_phy_shutup_warning-v1-1-997a692b31c6@oss.qualcomm.com/T/#u
>>> It is not recommended to list it as a dependency in the latest version.
>>
>> You can use `b4 prep --edit-deps` to mark it as a dependency to be
>> picked up by the bot.
> 
> Krzysztof mentioned in v4 that this is not a dependency and only needs 
> to be mentioned in the changelog.
> 

Gentle reminder. Do we need another version to address the dependency issue?

Thanks,
Jie

> 
>>
>>>
>>>
>>>>
>>>>
>>>>
>>>
>>> -- 
>>> Best Regards,
>>> Yijie
>>>
>>
>