diff options
| author | Zick Wei <zick.wei@quanta.corp-partner.google.com> | 2022-02-14 15:05:37 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2022-02-24 08:50:58 +0000 |
| commit | e637ff3b749a0c44539efe9541780fb1d0ba57b6 (patch) | |
| tree | 8b8ee1b061991a1bd30873090f8758986799a3fd | |
| parent | 5ab67c51fbe6b4523c721cb7a7604b8cc1af927e (diff) | |
| download | chrome-ec-e637ff3b749a0c44539efe9541780fb1d0ba57b6.tar.gz | |
driver/retimer: update PI3HDX1204 power on delay
On nipperkin we found current 2ms delay not enough,
will cause pi3hdx1204 initial failed.
IC vendor recommand that we should wait 10ms to access
pi3hdx1204 after power stable.
IC power stable is about 3ms after enable assert.
Update delay to 13ms retimer initialize will done.
BUG=b:218975937
BRANCH=nipperkin
TEST=verify HDMI retimer initial done when power on.
Signed-off-by: Zick Wei <zick.wei@quanta.corp-partner.google.com>
Change-Id: Ib538a75c3385f66091dab4d8682ed9e53c54f289
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3460775
Reviewed-by: Diana Z <dzigterman@chromium.org>
Reviewed-by: Rob Barnes <robbarnes@google.com>
| -rw-r--r-- | driver/retimer/pi3hdx1204.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/driver/retimer/pi3hdx1204.h b/driver/retimer/pi3hdx1204.h index 825f502602..f758149c10 100644 --- a/driver/retimer/pi3hdx1204.h +++ b/driver/retimer/pi3hdx1204.h @@ -59,7 +59,7 @@ #define PI3HDX1204_DE_DB_MINUS10 0xFF /* Delay for I2C to be ready after power on. */ -#define PI3HDX1204_POWER_ON_DELAY_MS 2 +#define PI3HDX1204_POWER_ON_DELAY_MS 13 /* Enable or disable the PI3HDX1204. */ int pi3hdx1204_enable(const int i2c_port, |