linux-kernel - Re: [PATCH v6 3/3] arm64: dts: qcom: Add base HAMOA-IOT-EVK board

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Message-ID: <79cc3480-6383-4683-81b5-9dc4303398ff@quicinc.com>
Date: Mon, 25 Aug 2025 18:55:56 +0800
From: Yingying Tang <quic_yintang@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Yijie Yang
	<yijie.yang@....qualcomm.com>
CC: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Quill Qi <le.qi@....qualcomm.com>, Jie Zhang
	<quic_jiezh@...cinc.com>,
        Shuai Zhang <quic_shuaz@...cinc.com>,
        Yongxing Mou
	<quic_yongmou@...cinc.com>, <quic_zhichen@...cinc.com>,
        Yingying Tang
	<yintang@....qualcomm.com>
Subject: Re: [PATCH v6 3/3] arm64: dts: qcom: Add base HAMOA-IOT-EVK board



On 8/25/2025 5:24 PM, Dmitry Baryshkov wrote:
> On Mon, Aug 25, 2025 at 10:47:22AM +0800, Yijie Yang wrote:
>>
>>
>> On 2025-08-22 19:56, Dmitry Baryshkov wrote:
>>> On Thu, Aug 21, 2025 at 04:20:24PM +0800, Yijie Yang wrote:
>>>> The HAMOA-IOT-EVK is an evaluation platform for IoT products, composed of
>>>> the Hamoa IoT SoM and a carrier board. Together, they form a complete
>>>> embedded system capable of booting to UART.
>>>>
>>>> This change enables the following peripherals on the carrier board:
>>>> - UART
>>>> - On-board regulators
>>>> - USB Type-C mux
>>>> - Pinctrl
>>>> - Embedded USB (EUSB) repeaters
>>>> - NVMe
>>>> - pmic-glink
>>>> - USB DisplayPorts
>>>> - Bluetooth
>>>> - Graphic
>>>> - Audio
>>>
>>> No WiFi?
>> It's in patch 2/3.>
> 
> No, it's not. It has PCIe4, but not a WiFi (which makes sense since WiFI
> is not present on the SoM).
> 
For Hamoa WiFi chip is powerd by UEFI not kernel, so WiFi can work without DTS node.

Only for usercase specific firmware requirement we need to add WiFi node.
For this case we need to wait both HSP and HMT's usercase specific firmwares are available on UPSTREAM, otherwise loading fw will fail.

So for now, we can skip adding the WiFi node. Once the use-case-specific firmware is ready in upstream, I can add the WiFi node separately for both HSP and HMT.
>>>>
>>>> Co-developed-by: Quill Qi <le.qi@....qualcomm.com> # Audio
>>>> Signed-off-by: Quill Qi <le.qi@....qualcomm.com>
>>>> Co-developed-by: Jie Zhang <quic_jiezh@...cinc.com> # Graphic
>>>> Signed-off-by: Jie Zhang <quic_jiezh@...cinc.com>
>>>> Co-developed-by: Shuai Zhang <quic_shuaz@...cinc.com> # Bluetooth
>>>> Signed-off-by: Shuai Zhang <quic_shuaz@...cinc.com>
>>>> Co-developed-by: Yongxing Mou <quic_yongmou@...cinc.com> # USB DisplayPorts
>>>> Signed-off-by: Yongxing Mou <quic_yongmou@...cinc.com>
>>>> Signed-off-by: Yijie Yang <yijie.yang@....qualcomm.com>
>>>> ---
>>>>   arch/arm64/boot/dts/qcom/Makefile          |    1 +
>>>>   arch/arm64/boot/dts/qcom/hamoa-iot-evk.dts | 1247 ++++++++++++++++++++++++++++
>>>>   2 files changed, 1248 insertions(+)
>>>>
>