linux-kernel - Re: [PATCH v1 3/3] arm64: dts: qcom: x1e80100: Add gpu support

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Date: Sun, 23 Jun 2024 22:05:51 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc: freedreno <freedreno@...ts.freedesktop.org>,
 dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
 Rob Clark <robdclark@...il.com>, Bjorn Andersson <andersson@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Konrad Dybcio
 <konrad.dybcio@...aro.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 3/3] arm64: dts: qcom: x1e80100: Add gpu support

On 23/06/2024 17:16, Akhil P Oommen wrote:
> On Sun, Jun 23, 2024 at 02:53:17PM +0200, Krzysztof Kozlowski wrote:
>> On 23/06/2024 14:28, Akhil P Oommen wrote:
>>> On Sun, Jun 23, 2024 at 01:17:16PM +0200, Krzysztof Kozlowski wrote:
>>>> On 23/06/2024 13:06, Akhil P Oommen wrote:
>>>>> Add the necessary dt nodes for gpu support in X1E80100.
>>>>>
>>>>> Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
>>>>> ---
>>>>> +		gmu: gmu@...a000 {
>>>>> +			compatible = "qcom,adreno-gmu-x185.1", "qcom,adreno-gmu";
>>>>> +			reg = <0x0 0x03d50000 0x0 0x10000>,
>>>>> +			      <0x0 0x03d6a000 0x0 0x35000>,
>>>>> +			      <0x0 0x0b280000 0x0 0x10000>;
>>>>> +			reg-names =  "rscc", "gmu", "gmu_pdc";
>>>>
>>>> Really, please start testing your patches. Your internal instructions
>>>> tells you to do that, so please follow it carefully. Don't use the
>>>> community as the tool, because you do not want to run checks and
>>>> investigate results.
>>>
>>> This was obviously tested before (and retested now) and everything works. I am
>>> confused about what you meant. Could you please elaborate a bit? The device
>>> and the compilation/test setup is new for me, so I am wondering if I
>>> made any silly mistake!
>>
>> Eh, your DTS is not correct, but this could not be pointed out by tests,
>> because the binding does not work. :(
> 
> I reordered both "reg" and "reg-names" arrays based on the address. Not sure if
> that is what we are talking about here. Gpu driver uses platform_get_resource_byname()
> to query mmio resources.
> 
> I will retest dt-bindings and dts checks after picking the patches you
> just posted and report back. Is the schema supposed to enforce strict
> order?

Yes, because the lists are strictly ordered (with exceptions).

Best regards,
Krzysztof