linux-kernel - Re: [PATCH v3] i2c: mv64xxx: Add bus error recovery

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Message-ID: <20201008122534.GB897@ninjato>
Date:   Thu, 8 Oct 2020 14:25:34 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Mark Tomlinson <mark.tomlinson@...iedtelesis.co.nz>
Cc:     gregory.clement@...tlin.com, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] i2c: mv64xxx: Add bus error recovery

oN tHU, aug 27, 2020 at 10:35:16AM +1200, Mark Tomlinson wrote:
> This adds i2c bus recovery to the mv64xxx driver.
> 
> Implement bus recovery to recover from SCL/SDA stuck low.
> 
> This uses the generic recovery function, setting the clock/data lines as
> GPIO pins, and sending 9 clocks to try and recover the bus.
> 
> Signed-off-by: Mark Tomlinson <mark.tomlinson@...iedtelesis.co.nz>

The timing of the i2c_recover_bus() should still be improved, but I got
the idea to add a helper for that to the core because other drivers
would benefit, too. And the we unify it for the whole subsystem.

So, applied to for-next, thanks!


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