linux-kernel - Re: [PATCH] arm64: dts: qcom: Remove unused and undocumented properties

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Message-ID: <2b866563-1328-484a-bfee-f41190ce856c@oss.qualcomm.com>
Date: Mon, 16 Dec 2024 13:41:55 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: "Aiqun Yu (Maria)" <quic_aiquny@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        "Rob Herring (Arm)" <robh@...nel.org>,
        Bjorn Andersson
 <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: Remove unused and undocumented
 properties

On 16.12.2024 4:42 AM, Aiqun Yu (Maria) wrote:
> On 11/16/2024 3:36 AM, Konrad Dybcio wrote:
>> On 15.11.2024 8:34 PM, Rob Herring (Arm) wrote:
>>> Remove properties which are both unused in the kernel and undocumented.
>>> Most likely they are leftovers from downstream.
>>>
>>> Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
>>> ---
>>
>> Funny, the sideinteraction compatible is undocumented and the touchscreen
>> driver is not upstream
> 
> Does the compatible also need to be fixed to "focaltech,ft8719"? Refer
> to the info from [1].

+Alexander, Caleb - would you like to look into this on axolotl?

> Confirmed, the compatible "focaltech,fts8719" is not even in any merged
> bindings or drivers. Instead, "focaltech,ft8719" is in the current
> driver and bindings.
> 
> By the way, I am curious about how Rob finds the unused properties.
> Could you share some steps?

make ARCH=arm64 LLVM=1 -j24 CHECK_DTBS=1 dtbs

returns all kinds of errors, including "undocumented property"

Konrad

> [1]https://lore.kernel.org/all/Zk4tLPn277Azd4XZ@google.com/
>