linux-kernel - Re: [PATCH v5 5/5] pwm: meson: add generic compatible for meson8 to sm1

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Date: Thu, 18 Apr 2024 13:57:03 +0200
From: Jerome Brunet <jbrunet@...libre.com>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Jerome Brunet <jbrunet@...libre.com>, Neil Armstrong
 <neil.armstrong@...aro.org>, Rob Herring <robh+dt@...nel.org>, Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
 <conor+dt@...nel.org>, Kevin Hilman <khilman@...libre.com>,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-amlogic@...ts.infradead.org, linux-pwm@...r.kernel.org, JunYi Zhao
 <junyi.zhao@...ogic.com>
Subject: Re: [PATCH v5 5/5] pwm: meson: add generic compatible for meson8 to
 sm1


On Fri 12 Apr 2024 at 14:08, Uwe Kleine-König <u.kleine-koenig@...gutronix.de> wrote:

> [[PGP Signed Part:Undecided]]
> On Wed, Feb 21, 2024 at 04:11:51PM +0100, Jerome Brunet wrote:
>> Introduce a new compatible support in the Amlogic PWM driver.
>> 
>> The PWM HW is actually the same for all SoCs supported so far. A specific
>> compatible is needed only because the clock sources of the PWMs are
>> hard-coded in the driver.
>> 
>> It is better to have the clock source described in DT but this changes the
>> bindings so a new compatible must be introduced.
>> 
>> When all supported platform have migrated to the new compatible, support
>> for the legacy ones may be removed from the driver.
>> 
>> The addition of this new compatible makes the old ones obsolete, as
>> described in the DT documentation.
>> 
>> Adding a callback to setup the clock will also make it easier to add
>> support for the new PWM HW found in a1, s4, c3 and t7 SoC families.
>> 
>> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
>
> After spending some brain cycles on this one I think I understood it.
> Looks fine to me, I only considered questioning if the dev_warn_once is
> too offensive.
>
> b4 + git applied the patch just fine even without patch #4 of this
> series. Would you be so kind to double check it works as intended?

It does, Thx.

>
> BTW, b4 diagnosed:
>
> Checking attestation on all messages, may take a moment...
> ---
>   ✗ [PATCH v5 5/5] pwm: meson: add generic compatible for meson8 to sm1
>     + Link: https://lore.kernel.org/r/20240221151154.26452-6-jbrunet@baylibre.com
>     + Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
>   ---
>   ✗ BADSIG: DKIM/baylibre-com.20230601.gappssmtp.com
>
> Is this only because it took me so long to reply, or is there a
> configuration issue with the baylibre MTA?

I have no idea. This is the first time this is reported


>
> Best regards
> Uwe


-- 
Jerome