linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: add basic devicetree for Ayaneo Pocket S2 gaming console

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Message-ID: <e65fa35b-44dd-44c7-bda9-0e1ff5fd745a@oss.qualcomm.com>
Date: Thu, 22 Jan 2026 10:03:04 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Neil Armstrong <neil.armstrong@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov
 <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, KancyJoe <kancy2333@...look.com>
Subject: Re: [PATCH 3/3] arm64: dts: qcom: add basic devicetree for Ayaneo
 Pocket S2 gaming console

On 1/22/26 9:38 AM, Neil Armstrong wrote:
> On 1/22/26 02:30, Dmitry Baryshkov wrote:
>> On Wed, Jan 21, 2026 at 05:40:28PM +0100, Neil Armstrong wrote:
>>> From: KancyJoe <kancy2333@...look.com>
>>>
>>> Add initial Device Tree for the Ayaneo Pocket S2 gaming console based
>>> on the Qualcomm Snapdragon 8 Gen 3 platform.
>>>
>>> The design is similar to a phone wihout the modem, the game control
>>> is handled via a standalone controller connected to a PCIe USB
>>> controller.
>>>
>>> Display support will be added in a second time.
>>>
>>> Signed-off-by: KancyJoe <kancy2333@...look.com>
>>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>>> ---
>>>   arch/arm64/boot/dts/qcom/Makefile                  |    1 +
>>>   .../boot/dts/qcom/sm8650-ayaneo-pocket-s2.dts      | 1445 ++++++++++++++++++++
>>>   arch/arm64/boot/dts/qcom/sm8650.dtsi               |    2 +-
>>>   drivers/gpu/drm/msm/dsi/dsi.c                      |    4 +-
>>>   4 files changed, 1449 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>>> index 6f34d5ed331c..1ba29755e5ba 100644
>>> --- a/arch/arm64/boot/dts/qcom/Makefile
>>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>>> @@ -313,6 +313,7 @@ dtb-$(CONFIG_ARCH_QCOM)    += sm8550-mtp.dtb
>>>   dtb-$(CONFIG_ARCH_QCOM)    += sm8550-qrd.dtb
>>>   dtb-$(CONFIG_ARCH_QCOM)    += sm8550-samsung-q5q.dtb
>>>   dtb-$(CONFIG_ARCH_QCOM)    += sm8550-sony-xperia-yodo-pdx234.dtb
>>> +dtb-$(CONFIG_ARCH_QCOM)    += sm8650-ayaneo-pocket-s2.dtb
>>>     sm8650-hdk-display-card-dtbs    := sm8650-hdk.dtb sm8650-hdk-display-card.dtbo
>>>   diff --git a/arch/arm64/boot/dts/qcom/sm8650-ayaneo-pocket-s2.dts b/arch/arm64/boot/dts/qcom/sm8650-ayaneo-pocket-s2.dts
>>> new file mode 100644
>>> index 000000000000..141d92933957
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/qcom/sm8650-ayaneo-pocket-s2.dts
>>> +
>>> +&i2c3 {
>>
>> clock-frequency?
> 
> We never did so far we we didn't need more than 100KHz

Let's at least make it explicit then

If you have the original vendor firwmare, you can read back some
registers to know what they're set to

Konrad