linux-kernel - Re: [PATCH 7/8] arm64: dts: qcom: sm8450: remove invalid reg-names from ufs node

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Message-ID: <799dac6c-f364-916f-4440-61c2429054c8@linaro.org>
Date:   Fri, 24 Mar 2023 08:27:46 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Luca Weiss <luca.weiss@...rphone.com>,
        Eric Biggers <ebiggers@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>
Cc:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Lee Jones <lee@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Bart Van Assche <bvanassche@....org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-scsi@...r.kernel.org
Subject: Re: [PATCH 7/8] arm64: dts: qcom: sm8450: remove invalid reg-names
 from ufs node

On 24/03/2023 08:26, Luca Weiss wrote:
> Hi Eric,
> 
> On Fri Mar 24, 2023 at 7:52 AM CET, Eric Biggers wrote:
>> Hi Neil,
>>
>> On Thu, Mar 23, 2023 at 02:10:44PM +0100, Neil Armstrong wrote:
>>> Hi,
>>>
>>> On 23/03/2023 11:49, Krzysztof Kozlowski wrote:
>>>> On 23/03/2023 11:25, Neil Armstrong wrote:
>>>>> Fixes the following DT bindings check error:
>>>>> ufshc@...4000: Unevaluated properties are not allowed ('reg-names' was unexpected)
>>>>>
>>>>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>>>>> ---
>>>>>   arch/arm64/boot/dts/qcom/sm8450.dtsi | 1 -
>>>>>   1 file changed, 1 deletion(-)
>>>>>
>>>>> diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
>>>>> index ef9bae2e6acc..8ecc48c7c5ef 100644
>>>>> --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
>>>>> +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
>>>>> @@ -3996,7 +3996,6 @@ ufs_mem_hc: ufshc@...4000 {
>>>>>   				     "jedec,ufs-2.0";
>>>>>   			reg = <0 0x01d84000 0 0x3000>,
>>>>>   			      <0 0x01d88000 0 0x8000>;
>>>>> -			reg-names = "std", "ice";
>>>>
>>>> This is also part of:
>>>> https://lore.kernel.org/linux-arm-msm/20230308155838.1094920-8-abel.vesa@linaro.org/#Z31arch:arm64:boot:dts:qcom:sm8450.dtsi
>>>> but I actually wonder whether you just missed some binding patch?
>>>
>>> I'm aware of Abel's RFC patchset to support shared ICE, but this is a cleanup of the current DT,
>>> and the current bindings schema doesn't document reg-names.
>>>
>>
>> The ufs-qcom driver accesses the "ice" registers by name, so the reg-names can't
>> be removed from the device tree.  A few months ago there was a patch to fix the
>> device tree schema for qcom,ufs to include the reg-names.  It looks like that
>> patch got missed, though:
>> https://lore.kernel.org/r/20221209-dt-binding-ufs-v2-2-dc7a04699579@fairphone.com
> 
> Are you implying that I should resend the patch or something? Not sure
> who to bug about applying this patch.

Yes, you should. It has been almost three months...

Best regards,
Krzysztof