[PATCH v6 1/3] i2c: mux: Add i2c-arb-gpio-challenge 'mux' driver

Olof Johansson olof at lixom.net
Wed Apr 17 02:34:58 EST 2013


Overdue, should have added a few iterations ago: :)

On Tue, Apr 16, 2013 at 09:29:00AM -0700, Doug Anderson wrote:
> The i2c-arb-gpio-challenge driver implements an I2C arbitration scheme
> where masters need to claim the bus with a GPIO before they can start
> a transcation.  This should generally only be used when standard I2C
> multimaster isn't appropriate for some reason (errata/bugs).
> 
> This driver is based on code that Simon Glass added to the i2c-s3c2410
> driver in the Chrome OS kernel 3.4 tree.  The current incarnation as a
> mux driver is as suggested by Grant Likely.  See
> <https://patchwork.kernel.org/patch/1877311/> for some history.
> 
> Signed-off-by: Doug Anderson <dianders at chromium.org>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen at samsung.com>
> Reviewed-by: Stephen Warren <swarren at nvidia.com>

Acked-by: Olof Johansson <olof at lixom.net>



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