linux-kernel - Re: [PATCH 10/10] arm64: dts: imx8mp-skov: increase I2C clock frequency for RTC

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Message-ID: <2ae085fa-6f13-4eb7-88c1-e625309fc35e@pengutronix.de>
Date: Fri, 20 Dec 2024 10:12:49 +0100
From: Ahmad Fatoum <a.fatoum@...gutronix.de>
To: Frank Li <Frank.li@....com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Oleksij Rempel
 <o.rempel@...gutronix.de>, devicetree@...r.kernel.org, imx@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/10] arm64: dts: imx8mp-skov: increase I2C clock
 frequency for RTC

Hello Frank,

On 19.12.24 20:16, Frank Li wrote:
> On Thu, Dec 19, 2024 at 06:51:35PM +0100, Ahmad Fatoum wrote:
>> On 19.12.24 18:47, Frank Li wrote:
>>> On Thu, Dec 19, 2024 at 08:25:34AM +0100, Ahmad Fatoum wrote:
>>>> From: Oleksij Rempel <o.rempel@...gutronix.de>
>>>>
>>>> The NXP PCF85063TP RTC we use is capable of up to 400 kHz of SCL clock
>>>> frequency, so let's make use of this instead of the 100 kHz bus frequency
>>>> we are currently using.
>>>
>>> Increase I2C frequency to 400khz from 100kHz because NXP PCF85063TP RTC
>>> support it.
>>
>> Unlike your other suggestions, these is no information lost by rewriting
>> the commit message as you suggest. I don't mind, but must admit it feels
>> like bikeshedding. What is your concrete objection to my commit message?
> 
> According to
> https://docs.kernel.org/process/submitting-patches.html
> 
> Describe your changes in imperative mood, e.g. “make xyzzy do frotz”
> instead of “[This patch] makes xyzzy do frotz” or
> “[I] changed xyzzy to do frotz”, as if you are giving orders to the
> codebase to change its behaviour.

I have to disagree with your interpretation. The imperative mood is primarily
expected for commit message titles, but if you take a look at normal commit
message _bodies_ that make it into the kernel, you'll find that a whole lot
of them start off like I do: Describe the situation and then what's done about
it.

I personally find that this is often easier to follow than just having two
imperatives back-to-back.

I have just Cc'd you on an RFC patch to amend the documentation you linked
to reflect this. I am happy to continue the discussion over there:

https://lore.kernel.org/workflows/20241220-submitting-patches-imperative-v1-0-ee874c1859b3@pengutronix.de/T/#t

Thanks,
Ahmad

> 
> Generally, avoid use
> 
> "this patch ..."
> "let's ...."
> "we do ... for ... "
> 
> Just simple said
> 
> Do ... to ...
> Do ... because ...
> 
> Frank
> 
>>
>> Thanks,
>> Ahmad
>>
>>
>>>
>>> Frank
>>>
>>>>
>>>> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
>>>> Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
>>>> ---
>>>>  arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
>>>> index a683f46fcbab..ec7857db7bf0 100644
>>>> --- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
>>>> +++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
>>>> @@ -333,7 +333,7 @@ reg_nvcc_sd2: LDO5 {
>>>>  };
>>>>
>>>>  &i2c3 {
>>>> -	clock-frequency = <100000>;
>>>> +	clock-frequency = <400000>;
>>>>  	pinctrl-names = "default";
>>>>  	pinctrl-0 = <&pinctrl_i2c3>;
>>>>  	status = "okay";
>>>>
>>>> --
>>>> 2.39.5
>>>>
>>>
>>
>>
>> --
>> Pengutronix e.K.                           |                             |
>> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
>> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
>> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
> 


-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |