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Message-ID: <49cf0a3d-5f52-41a1-9858-692f48d06b88@kernel.org>
Date: Wed, 24 Apr 2024 21:12:59 +0200
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Subject: Re: [PATCH v1] Bluetooth: qca: Correct property enable-gpios handling
 logic for WCN6750 and WCN6855
To: quic_zijuhu <quic_zijuhu@quicinc.com>,
 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, luiz.dentz@gmail.com,
 luiz.von.dentz@intel.com, marcel@holtmann.org
Cc: linux-bluetooth@vger.kernel.org, bartosz.golaszewski@linaro.org,
 wt@penguintechs.org, kernel@quicinc.com
References: <1713947712-4307-1-git-send-email-quic_zijuhu@quicinc.com>
 <af004bcd-0649-4a82-8f09-36d6addd0e1e@linaro.org>
 <0cba3838-917b-48af-ba8b-2ef60714943a@quicinc.com>
From: Krzysztof Kozlowski <krzk@kernel.org>
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In-Reply-To: <0cba3838-917b-48af-ba8b-2ef60714943a@quicinc.com>
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On 24/04/2024 11:22, quic_zijuhu wrote:
> On 4/24/2024 4:44 PM, Krzysztof Kozlowski wrote:
>> On 24/04/2024 10:35, Zijun Hu wrote:
>>> Commit 56d074d26c58 ("Bluetooth: hci_qca: don't use IS_ERR_OR_NULL()
>>> with gpiod_get_optional()") has wrong logic for below case:
>>>
>>> property enable-gpios is not configured for WCN6750 and WCN6855
>>
>> As I said before, bindings say this property is required. I already
>> asked you to provide rationale describing hardware and update the
>> bindings if they bindings are not correct.
>>
> 1)
> you ever given below reply at below link
> https://lore.kernel.org/linux-bluetooth/52394d97-04c3-4f77-aaae-f1e152cd5632@linaro.org/
> 
> "The pin is required on 6750, 6855 and maybe others. You cannot not have
> the GPIO"
> 
> 2) for property enable-gpios, they are required for WCN6750 and WCN6855
> in my opinion,  i am a member of BT team.

If they are required, then your commit msg is not precise and code looks
incorrect.

> 
> 3) only care about the case property enable-gpios is not configured,
> the original BT driver design logic indeed matches with binging spec's
> requirements before bartosz's wrong change

What? There is no such case according to bindings. I told you already
two times: Either change bindings or this is not valid.

> 
> 4) please ask dts owner for help if you suspect current bindings spec
> has something wrong. it is not my responsibility for providing such
> info, that maybe involve CCI.

What?

What or who is DTS owner?

I do not suspect bindings are wrong. You are implying it. Anyway, if
making driver correct according to bindings is not your responsibility,
then this patch is just bogus.

> 
> 5) gentle reminder, please realize that there are many lunched products
> already when you try to change some important logic, i don't suggest
> change important logic or setting if there are no actual issue reported.

What?

Best regards,
Krzysztof