linux-kernel - Re: [PATCH v4 0/6] reset: gpio: ASoC: shared GPIO resets

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Date: Wed, 24 Jan 2024 08:25:16 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Chris Packham <Chris.Packham@...iedtelesis.co.nz>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>,
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
 Banajit Goswami <bgoswami@...cinc.com>, Liam Girdwood <lgirdwood@...il.com>,
 Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Viresh Kumar <viresh.kumar@...aro.org>, Frank Rowand
 <frowand.list@...il.com>, Jaroslav Kysela <perex@...ex.cz>,
 Takashi Iwai <tiwai@...e.com>,
 "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
 "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
 "linux-sound@...r.kernel.org" <linux-sound@...r.kernel.org>,
 "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>
Cc: Bartosz Golaszewski <brgl@...ev.pl>,
 Sean Anderson <sean.anderson@...o.com>
Subject: Re: [PATCH v4 0/6] reset: gpio: ASoC: shared GPIO resets

On 23/01/2024 20:28, Chris Packham wrote:
> 
> On 24/01/24 03:13, Krzysztof Kozlowski wrote:
>> Hi,
>>
>> Patch #2 (cpufreq: do not open-code of_phandle_args_equal()) and patch #4
>> (reset: Instantiate reset GPIO controller for shared reset-gpios) depend on OF
>> change (patch #1).
>>
>> Changes in v4
>> =============
>> 1. New patches:
>>     of: add of_phandle_args_equal() helper
>>     cpufreq: do not open-code of_phandle_args_equal()
>>
>> 2. reset-gpio.c:
>>     - Drop unneeded comment (Bartosz), add Rb tag.
>>     - Do not assign of_node.
>>
>> 3. reset/core.c:
>>     - Implement most of Bartosz feedback (I responded to one which I did not
>>       implement) and comments from Philipp.
>>     - Expect either rcdev->of_args or rcdev->of_node.
>>     - Drop __reset_gpios_args_match() and use common helper (Philipp).
>>     - Move declarations of automatic-cleanup variables in
>>       __reset_add_reset_gpio_lookup() to place of use (Bartosz).
>>     - Separate gpio_device_get_label() and kstrdup() (Philipp).
>>     - Correct doc for __reset_add_reset_gpio_device(), rewrite few comments.
>>     - Drop unneeded "r" variable in __reset_find_rcdev() (Philipp).
>>     - Drop of_phandle_args initialization in __of_reset_control_get (Philipp).
>>     - Check if CONFIG_RESET_GPIO is enabled before trying to look up reset-gpios.
>>
>> 4. Drop Chris' patch: "i2c: muxes: pca954x: Allow sharing reset GPIO", because
>>     discussion is on going.
> 
> I actually think it would have been OK as-is with your latest change to 
> return NULL when CONFIG_RESET_GPIO is not enabled. But I'm happy to 
> submit it independently after this series lands. It'll give me a chance 
> to do a bit more testing.

Yeah, I wasn't sure if the concerns are really resolved. I think you can
send your patch separately because there is no clear dependency, so also
no clear benefits of me taking your patch into this patchset.

Best regards,
Krzysztof