linux-kernel - Re: [PATCH v4 2/3] spi: cadence-quadspi: Add clock configuration for StarFive JH7110 QSPI

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Date:   Wed, 5 Jul 2023 09:23:42 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     William Qiu <william.qiu@...rfivetech.com>,
        devicetree@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Cc:     Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Ziv Xu <ziv.xu@...rfivetech.com>
Subject: Re: [PATCH v4 2/3] spi: cadence-quadspi: Add clock configuration for
 StarFive JH7110 QSPI

On 05/07/2023 09:04, William Qiu wrote:
> 
> 
> On 2023/7/5 14:21, Krzysztof Kozlowski wrote:
>> On 04/07/2023 11:04, William Qiu wrote:
>>> Add QSPI clock operation in device probe.
>>>
>>> Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
>>> Reviewed-by: Hal Feng <hal.feng@...rfivetech.com>
>>> Reported-by: kernel test robot <lkp@...el.com>
>>> Closes: https://lore.kernel.org/oe-kbuild-all/202306022017.UbwjjWRN-lkp@intel.com/
>>> Reported-by: Julia Lawall <julia.lawall@...ia.fr>
>>> Closes: https://lore.kernel.org/r/202306040644.6ZHs55x4-lkp@intel.com/
>>
>>
>>>  
>>> @@ -1840,6 +1858,8 @@ static int cqspi_resume(struct device *dev)
>>>  	struct spi_master *master = dev_get_drvdata(dev);
>>>  
>>>  	clk_prepare_enable(cqspi->clk);
>>> +	if (of_device_is_compatible(dev->of_node, "starfive,jh7110-qspi"))
>>
>> Don't add compatible checks inside the code. It does not scale. We
>> expect compatibles to be listed only in one place - of_device_id - and
>> customize driver with match data / quirks / flags.
>>
>> Comment applies to all your diff hunks.
>>
> I'll use "of_device_get_match_data" to replace it. But the way I added
> reset before is also by compatible checks. Should I change this place to 
> "of_device_get_match_data" as well?

I don't know what's there, but in general driver should be written in a
consistent style.

Best regards,
Krzysztof