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| author | Andrew Jackson <Andrew.Jackson@arm.com> | 2014-11-07 12:10:44 +0000 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-11-21 08:06:32 +0100 |
| commit | d39f77b06a712fcba6185a20bb209e357923d980 (patch) | |
| tree | 96a079b1aec111f9a8c5f526f1197c3ceebbc296 /drivers/sn | |
| parent | 27caca9d2e01c92b26d0690f065aad093fea01c7 (diff) | |
| download | linux-d39f77b06a712fcba6185a20bb209e357923d980.tar.gz | |
i2c: designware: prevent early stop on TX FIFO empty
If the Designware core is configured with IC_EMPTYFIFO_HOLD_MASTER_EN
set to zero, allowing the TX FIFO to become empty causes a STOP
condition to be generated on the I2C bus. If the transmit FIFO
threshold is set too high, an erroneous STOP condition can be
generated on long transfers - particularly where the interrupt
latency is extended.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/sn')
0 files changed, 0 insertions, 0 deletions