diff options
| author | Philippe Langlais <philippe.langlais@linaro.org> | 2011-03-21 11:31:20 +0100 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 10:59:40 +0200 |
| commit | c8e4b64a1fa7ecf95ca472ff76137823100ff950 (patch) | |
| tree | dc8418ee096b3e6afa1c3dde7f3ca897deda8db3 /drivers/i2c | |
| parent | 93bbe4dbd7974a9d4c85314afc5a6138cc607032 (diff) | |
i2c-nomadik: Add code to retry on timeout failure and set i2c clock to 400KHz
It is seen that i2c-nomadik controller randomly stops
generating the interrupts leading to a i2c timeout.
As a workaround to this problem add retries, to the on going
transfer on failure.
Since this behaviour does not get changed with a wait for
longer duration, the timeout can be reduced to a lower
value, leading to a quicker retry attempt.
ST-Ericsson ID: ER 325661
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Change-Id: Ic9db2b15ff5ce7e656cbbdfeb19270da9e32f9d1
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/16972
Tested-by: Virupax SADASHIVPETIMATH <virupax.sadashivpetimath@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-nomadik.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index b7b89aa3a32..f108c77d50d 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -253,8 +253,6 @@ static int init_hw(struct nmk_i2c_dev *dev) { int stat; - clk_enable(dev->clk); - stat = flush_i2c_fifo(dev); if (stat) goto exit; |