Re: [PATCH V9 1/2] i2c/adapter: Add bus recovery infrastructure

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 24 January 2013 16:06, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
> Add i2c bus recovery infrastructure to i2c adapters as specified in the i2c
> protocol Rev. 03 section 3.1.16 titled "Bus clear".
>
> http://www.nxp.com/documents/user_manual/UM10204.pdf
>
> Sometimes during operation i2c bus hangs and we need to give dummy clocks to
> slave device to start the transfer again. Now we may have capability in the bus
> controller to generate these clocks or platform may have gpio pins which can be
> toggled to generate dummy clocks. This patch supports both.
>
> This patch also adds in generic bus recovery routines gpio or scl line based
> which can be used by bus controller. In addition controller driver may provide
> its own version of the bus recovery routine.
>
> This doesn't support multi-master recovery for now.
>
> Reviewed-by: Paul Carpenter <paul@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>

ARM mail servers are broken now a days, so these patches may not apply
from mail.
Find them attached.

Attachment: 0001-i2c-adapter-Add-bus-recovery-infrastructure.patch
Description: Binary data

Attachment: 0002-i2c-designware-Provide-i2c-bus-recovery-support.patch
Description: Binary data


[Index of Archives]     [Linux GPIO]     [Linux SPI]     [Linux Hardward Monitoring]     [LM Sensors]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux