linux-kernel - Re: [PATCH v3 2/6] i2c: at91: implement i2c bus recovery

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Message-ID: <20200222113358.GB1716@kunai>
Date:   Sat, 22 Feb 2020 12:33:58 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Cc:     linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kamel.bouhara@...tlin.com, Nicolas.Ferre@...rochip.com,
        alexandre.belloni@...tlin.com, Ludovic.Desroches@...rochip.com,
        robh@...nel.org, peda@...ntia.se, linux@...linux.org.uk
Subject: Re: [PATCH v3 2/6] i2c: at91: implement i2c bus recovery

On Wed, Jan 15, 2020 at 01:54:18PM +0200, Codrin Ciubotariu wrote:
> From: Kamel Bouhara <kamel.bouhara@...tlin.com>
> 
> Implement i2c bus recovery when slaves devices might hold SDA low.
> In this case re-assign SCL/SDA to gpios and issue 9 dummy clock pulses
> until the slave release SDA.
> 
> Signed-off-by: Kamel Bouhara <kamel.bouhara@...tlin.com>
> Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>

Applied to for-next, thanks!

The implementation is very similar to i2c-imx. Maybe we should move this
mechanism into the core somewhen...


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