diff options
| author | Johnny Li <johnny_li@wistron.corp-partner.google.com> | 2020-11-13 16:30:31 +0800 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2020-11-17 00:49:37 +0000 |
| commit | df3cbddb5825023d7788365f52c0c24ecc873b1b (patch) | |
| tree | 01059f32a6463bf72e43063c82f8042dc7480b7a | |
| parent | 1fe129f321ee9b8120c12d6224a728db2e564cf0 (diff) | |
mb/google/volteer/variants/volteer2: Tune Volteer2 I2C2 bus frequency
The current I2C2 bus frequency is 344 kHZ, which does not meet the spec. This change updates scl_lcnt, scl_hcnt, sda_hold value for I2C2 to bring
the bus frequency closer to 400 kHz.
BUG=b:153588771
TEST=Verified that I2C2 frequency is 380 kHz.
Signed-off-by: Johnny Li <johnny_li@wistron.corp-partner.google.com>
Change-Id: I96fa5ed586de41324733ac7537b6bd73f39fc176
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47558
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/google/volteer/variants/volteer2/overridetree.cb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb index e4da0e6252..72cb79ac92 100644 --- a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb +++ b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb @@ -36,6 +36,12 @@ chip soc/intel/tigerlake }, .i2c[2] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 163, + .scl_hcnt = 75, + .sda_hold = 36, + }, }, .i2c[3] = { .speed = I2C_SPEED_FAST, |