Re: [PATCH v5 0/3] Initial support for Qualcomm Hamoa IOT EVK board

[Yijie Yang]

On 2025-08-14 17:05, Krzysztof Kozlowski wrote:
> On 14/08/2025 10:54, Yijie Yang wrote:
> > On 2025-08-14 16:24, Dmitry Baryshkov wrote:
> > > On Thu, Aug 14, 2025 at 03:27:27PM +0800, Yijie Yang wrote:
> > > > Introduce the device tree, DT bindings, and driver modifications required
> > > > to bring up the HAMOA-IOT-EVK evaluation board—based on the X1E80100 SoC—to
> > > > a UART shell.
> > > > This patch set focuses on two key hardware components: the HAMOA-IOT-SOM
> > > > and the HAMOA-IOT-EVK carrier board.
> > > > The HAMOA-IOT-SOM is a compact System on Module that integrates the SoC,
> > > > GPIOs, and PMICs. It is designed to be modular and can be paired with
> > > > various carrier boards to support different use cases.
> > > > The HAMOA-IOT-EVK is one such carrier board, designed for IoT scenarios.
> > > > It provides essential peripherals such as UART, on-board PMICs, and
> > > > USB-related components.
> > > > Together, these components form a flexible and scalable platform, and this
> > > > patch set enables their initial bring-up through proper device tree
> > > > configuration and driver support.
> > > >
> > > > Qualcomm SoCs often have multiple product variants, each identified by a
> > > > different SoC ID. For instance, the x1e80100 SoC has closely related
> > > > variants such as x1e78100 and x1e001de. This diversity in SoC identifiers
> > > > can lead to confusion and unnecessary maintenance complexity in the device
> > > > tree and related subsystems.
> > > > To address this, code names offer a more consistent and project-agnostic
> > > > way to represent SoC families. They tend to remain stable across
> > > > development efforts.
> > > > This patch series introduces "hamoa" as the codename for the x1e80100 SoC.
> > > > Going forward, all x1e80100-related variants—including x1e81000 and others
> > > > in the same family—will be represented under the "hamoa" designation in the
> > > > device tree.
> > > > This improves readability, streamlines future maintenance, and aligns with
> > > > common naming practices across Qualcomm-based platforms.
> > > >
> > > > 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
> > > > - PCIe6a and its PHY
> > > > - PCIe4 and its PHY
> > > > - Reserved memory regions
> > > > - Pinctrl
> > > > - NVMe
> > > > - ADSP, CDSP
> > > > - WLAN, Bluetooth (M.2 interface)
> > > > - USB DisplayPort
> > > >
> > > > DTS Dependency:
> > > > https://lore.kernel.org/all/20250724-move-edp-endpoints-v1-3-6ca569812838@xxxxxxxxxxxxxxxx/
> > > >
> > > > Signed-off-by: Yijie Yang <yijie.yang@xxxxxxxxxxxxxxxx>
> > > > ---
> > > > To: Bjorn Andersson <andersson@xxxxxxxxxx>
> > > > To: Konrad Dybcio <konradybcio@xxxxxxxxxx>
> > > > To: Rob Herring <robh@xxxxxxxxxx>
> > > > To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
> > > > To: Conor Dooley <conor+dt@xxxxxxxxxx>
> > > > Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> > > > Cc: devicetree@xxxxxxxxxxxxxxx
> > > > Cc: linux-kernel@xxxxxxxxxxxxxxx
> > > >
> > > > ---
> > > > Changes in v5:
> > > > - Update base commit.
> > > > - Drop an already merged patch:
> > > > https://lore.kernel.org/all/20250804-hamoa_initial-v4-2-19edbb28677b@xxxxxxxxxxxxxxxx/
> > > > - Link to v4: https://lore.kernel.org/r/20250804-hamoa_initial-v4-0-19edbb28677b@xxxxxxxxxxxxxxxx
> > >
> > > Please keep full changelog rather than trimming previous iterations.
> >
> > Sure, I will restore them.
> >
> > > Also, is there a reason why you didn't pick up audio and display chunks
> > > as it was requested on the corresponding reviews?
> >
> > Display-related changes have been merged into '[PATCH v5 3/3] arm64:
> > dts: qcom: Add base HAMOA-IOT-EVK board' and are already present there.
> >
> > Audio support is still under debugging due to unresolved issues, and
> > it's unclear when it will be ready. Would it be acceptable to proceed
> > without it for now?
> Audio was sent to the lists, so this is confusing. What was the point of
> that posting? It clearly said:
>
> "Basic test is good in Hamoa-IOT-EVK board."
>
> So was that true or not?

True.

> Best regards,
> Krzysztof

--
Best Regards,
Yijie