linux-kernel - Re: [PATCH v5 2/2] i2c: mv64xxx: add an optional bus-reset-gpios property

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: <20231027084835.yjfphaecm6h4kore@zenone.zhora.eu>
Date:   Fri, 27 Oct 2023 10:48:35 +0200
From:   Andi Shyti <andi.shyti@...nel.org>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc:     gregory.clement@...tlin.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/2] i2c: mv64xxx: add an optional bus-reset-gpios
 property

Hi Chris,

On Fri, Oct 27, 2023 at 04:31:04PM +1300, Chris Packham wrote:
> Some hardware designs have a GPIO used to control the reset of all the
> devices on and I2C bus. It's not possible for every child node to
> declare a reset-gpios property as only the first device probed would be
> able to successfully request it (the others will get -EBUSY). Represent
> this kind of hardware design by associating the bus-reset-gpios with the
> parent I2C bus. The reset line will be released prior to the child I2C
> devices being probed.
> 
> Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
> ---
> 
> Notes:
>     Changes in v5:
>     - Rename reset-gpios and reset-duration-us to bus-reset-gpios and
>       bus-reset-duration-us as requested by Wolfram

for such change you could have kept my r-b:

Reviewed-by: Andi Shyti <andi.shyti@...nel.org>

Andi