diff options
| author | Bill XIE <persmule@gmail.com> | 2017-10-26 11:55:34 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2017-11-07 12:26:51 +0000 |
| commit | 54f45c684c2daaef92cbe6c4672a7295d0469c56 (patch) | |
| tree | d8d51339c8108aec188936adb928e307a1a4b5e3 /src/ec/lenovo/h8 | |
| parent | eb4ded6925d147478fb75a4afcfb6534a2faaa5a (diff) | |
| download | coreboot-54f45c684c2daaef92cbe6c4672a7295d0469c56.tar.xz | |
ec/lenovo/h8: Clear EC output queue before enablement
Sometimes (observed on Thinkpad T400s during cold boot) a few (only one
observed) garbage bytes may detained in the output queue of EC after power
up, and they should be cleared otherwise later communications will be
disrupted.
Change-Id: Id1733f7350232d0b10ac0d1bc912b62e7fa4da75
Signed-off-by: Bill XIE <persmule@gmail.com>
Reviewed-on: https://review.coreboot.org/22181
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Schander <coreboot@mimoja.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Diffstat (limited to 'src/ec/lenovo/h8')
| -rw-r--r-- | src/ec/lenovo/h8/h8.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ec/lenovo/h8/h8.c b/src/ec/lenovo/h8/h8.c index 882ac0271c..3442f68ff8 100644 --- a/src/ec/lenovo/h8/h8.c +++ b/src/ec/lenovo/h8/h8.c @@ -196,6 +196,7 @@ static void h8_enable(struct device *dev) dev->ops = &h8_dev_ops; + ec_clear_out_queue(); h8_log_ec_version(); /* Always enable I/O range 0x1600-0x160f and thermal management */ |