diff options
| author | Johnny Li <johnny_li@wistron.corp-partner.google.com> | 2020-10-08 09:11:21 +0800 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2020-10-30 15:04:04 +0000 |
| commit | 8269692517808d44d0b9c8deecd9e9182892726f (patch) | |
| tree | f3fee6b2269ff6d5976585a7cb29ba44ad620dde | |
| parent | 69c0b19ae1d17f52907d1d31ac45a48b6fe426a7 (diff) | |
mb/google/volteer/variants/volteer2: I2C5 trackpad bus freq 400 kHz
The current I2C5 bus frequency is 367 kHZ, which does not meet the spec.
This change updates scl_lcnt, scl_hcnt, scl_hcnt value for I2C5 to bring
the bus frequency closer to 400kHz.
BUG=b:153588771
TEST=Verified that I2C5 frequency is between 389-396kHz.
Signed-off-by: Johnny Li <johnny_li@wistron.corp-partner.google.com>
Change-Id: If0803a74ba9071acf15486ce4038261c1681a92f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46142
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
| -rw-r--r-- | src/mainboard/google/volteer/variants/volteer2/overridetree.cb | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb index 2db1f087ef..3f666ac148 100644 --- a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb +++ b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb @@ -4,6 +4,44 @@ chip soc/intel/tigerlake register "IomTypeCPortPadCfg[1]" = "0x090E000D" register "DdiPort1Hpd" = "0" register "DdiPort2Hpd" = "0" + #+-------------------+---------------------------+ + #| Field | Value | + #+-------------------+---------------------------+ + #| chipset_lockdown | CHIPSET_LOCKDOWN_COREBOOT | + #| GSPI0 | cr50 TPM. Early init is | + #| | required to set up a BAR | + #| | for TPM communication | + #| | before memory is up | + #| GSPI1 | Fingerprint MCU | + #| I2C0 | Audio | + #| I2C1 | Touchscreen | + #| I2C2 | WLAN, SAR0 | + #| I2C3 | Camera, SAR1 | + #| I2C5 | Trackpad | + #+-------------------+---------------------------+ + register "common_soc_config" = "{ + .i2c[0] = { + .speed = I2C_SPEED_FAST, + }, + .i2c[1] = { + .speed = I2C_SPEED_FAST, + }, + .i2c[2] = { + .speed = I2C_SPEED_FAST, + }, + .i2c[3] = { + .speed = I2C_SPEED_FAST, + }, + .i2c[5] = { + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 163, + .scl_hcnt = 75, + .sda_hold = 36, + }, + }, + }" register "HybridStorageMode" = "1" |