linux-kernel - Re: [PATCH v4] Currently if the SoC needs pinctrl to switch the SCL and SDA from the I2C function to GPI

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <b12f4f63-4504-e775-166d-9ea30dd97489@kalrayinc.com>
Date:   Tue, 22 Aug 2023 16:15:25 +0200
From:   Yann Sionneau <ysionneau@...rayinc.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Yann Sionneau <ysionneau@...ray.eu>
Cc:     Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Julian Vetter <jvetter@...rayinc.com>,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] Currently if the SoC needs pinctrl to switch the SCL
 and SDA from the I2C function to GPI

Hi,

On 8/22/23 15:26, Andy Shevchenko wrote:
> On Tue, Aug 22, 2023 at 03:11:23PM +0200, Yann Sionneau wrote:
>> scl-gpio = <>;
>> sda-gpio = <>;
>>
>> Are not enough for some SoCs to have a working recovery.
>> Some need:
>>
>> scl-gpio = <>;
>> sda-gpio = <>;
>> pinctrl-names = "default", "recovery";
>> pinctrl-0 = <&i2c_pins_hw>;
>> pinctrl-1 = <&i2c_pins_gpio>;
>>
>> The driver was not filling rinfo->pinctrl with the device node
>> pinctrl data which is needed by generic recovery code.
>>
>> Signed-off-by: Yann Sionneau <ysionneau@...ray.eu>
>> ---
>> V3 -> V4:
>> * Replace `else if` by simply `if`.
> You forgot my tag. Why?
Woops sorry, I am not used to sending patches upstream. I didn't know I 
had to add the ack tag. Will do it!
> Also I think this will generate more code and more noise in debug case.
> So, I admit I gave a bad suggestion in previous round.
Ah yes you are right in case of dbg+CONFIG_PINCTRL not set it will print 
both messages but just one is enough.
>
> Please, go for v3 with my tag (as v5).
>
Ok, I'll also add `i2c: designware: ` to $subject as Mika Westerberg 
suggested.

Thanks,

-- 

Yann