diff options
| author | Ricardo Ribalda Delgado <[email protected]> | 2017-10-10 18:11:15 +0200 |
|---|---|---|
| committer | Wolfram Sang <[email protected]> | 2017-10-13 21:05:56 +0200 |
| commit | 88fa2dfb075a20c3464e3d303c57dd8ced9e8309 (patch) | |
| tree | 21e4be535e1e55bb18b5d2f6b0195f6b917277a6 /lib/flex_array.c | |
| parent | 0fe16195f89173652cf111d7b384941b00c5aabd (diff) | |
i2c: piix4: Disable completely the IMC during SMBUS_BLOCK_DATA
SMBUS_BLOCK_DATA transactions might fail due to a race condition with
the IMC (Integrated Micro Controller), even when the IMC semaphore
is used.
This bug has been reported and confirmed by AMD, who suggested as a
solution an IMC firmware upgrade (obtained via BIOS update) and
disabling the IMC during SMBUS_BLOCK_DATA transactions.
Even without the IMC upgrade, the SMBUS is much more stable with this
patch.
Tested on a Bettong-alike board.
Signed-off-by: Ricardo Ribalda Delgado <[email protected]>
Reviewed-by: Jean Delvare <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Diffstat (limited to 'lib/flex_array.c')
0 files changed, 0 insertions, 0 deletions