diff options
| author | Mulin Chao <mlchao@nuvoton.com> | 2017-01-24 16:38:54 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-01-26 01:45:44 -0800 |
| commit | 45817826e17528782d65f7571b1224ef99f67faa (patch) | |
| tree | 2006839aa64cfcc84967114700a5baaf6557be59 /board/ryu/board.h | |
| parent | c7a7f1542e13b8be6d800ef84a14478e3724cd05 (diff) | |
| download | chrome-ec-45817826e17528782d65f7571b1224ef99f67faa.tar.gz | |
npcx: i2c: Fixed bug ec returns error during reading last byte.
If common layer called i2c_xfer() with only one byte read length and the
flag is I2C_XFER_STOP, the npcx's i2c driver will return error directly.
The reason is once ec read last byte of previous transaction, hardware
will release SCL and i2c slave start to send following byte. Ec might
not have chance to generate NACK in time. A additional dummy byte is
necessary to make sure ec generate NACK before STOP condition.
BRANCH=none
BUG=chrome-os-partner:60266
TEST=make BOARD=pyro; test battery command on pyro with CONFIG_CRC8 and
CONFIG_SMBUS.
Change-Id: I372ff494b49656cbfbd4044b99b00b13daf0b741
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/430569
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
Diffstat (limited to 'board/ryu/board.h')
0 files changed, 0 insertions, 0 deletions