diff options
| author | Philippe Langlais <philippe.langlais@linaro.org> | 2011-03-21 11:31:20 +0100 |
|---|---|---|
| committer | Robert Marklund <robert.marklund@stericsson.com> | 2011-05-04 18:04:47 +0200 |
| commit | cf6807ab9f7300d7ae2d99def1350a440cb93ca5 (patch) | |
| tree | 622dd302f2e6a098198ec9ba42b2f4e782985bb1 /arch/arm/mach-ux500/board-mop500.c | |
| parent | 088bc11172bf46bbd08a673b014b3fe39459c62e (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 'arch/arm/mach-ux500/board-mop500.c')
| -rw-r--r-- | arch/arm/mach-ux500/board-mop500.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 33cfdfd60bc..9f661cae8dc 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -230,10 +230,10 @@ static struct nmk_i2c_controller u8500_i2c##id##_data = { \ * Tx & Rx FIFO threshold values as 1 and standard * mode of operation */ -U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, 500, I2C_FREQ_MODE_STANDARD); -U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, 500, I2C_FREQ_MODE_STANDARD); -U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, 500, I2C_FREQ_MODE_STANDARD); -U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, 500, I2C_FREQ_MODE_STANDARD); +U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 400000, 200, I2C_FREQ_MODE_FAST); +U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 400000, 200, I2C_FREQ_MODE_FAST); +U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 400000, 200, I2C_FREQ_MODE_FAST); +U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 400000, 200, I2C_FREQ_MODE_FAST); static void __init mop500_i2c_init(void) { |