diff options
| author | Seunghwan Kim <sh_.kim@samsung.com> | 2019-01-25 09:38:40 +0900 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-01-28 13:36:49 +0000 |
| commit | 6dda1e05565785e6fa41b33957c1096d47ef7c77 (patch) | |
| tree | 00b1dc080d89f080ab21bc3d1ee5c2e199293da7 /src/mainboard | |
| parent | 36ced10364faf04673a2fd3ddce74ebf9e361498 (diff) | |
mainboard/google/octopus/variants/casta: Decrease touchpad I2C CLK frequency
ELAN touchpad supports up to 400KHz, so we need to limit its CLK
frequency to 400HKz.
BUG=b:123376618
BRANCH=octopus
TEST=built and verified touchpad I2C clk frequency gets be lower than 400KHz
Change-Id: If7a43fe20c7e5abdf23c8c36e34c072c371563bf
Signed-off-by: Seunghwan Kim <sh_.kim@samsung.com>
Reviewed-on: https://review.coreboot.org/c/31085
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/octopus/variants/casta/overridetree.cb | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mainboard/google/octopus/variants/casta/overridetree.cb b/src/mainboard/google/octopus/variants/casta/overridetree.cb index 8915e1ae9e..d70a6ea3f9 100644 --- a/src/mainboard/google/octopus/variants/casta/overridetree.cb +++ b/src/mainboard/google/octopus/variants/casta/overridetree.cb @@ -1,5 +1,4 @@ chip soc/intel/apollolake - # Intel Common SoC Config #+-------------------+---------------------------+ #| Field | Value | @@ -8,12 +7,20 @@ chip soc/intel/apollolake #| | required to set up a BAR | #| | for TPM communication | #| | before memory is up | + #| I2C5 | Audio | + #| I2C6 | Trackpad | #+-------------------+---------------------------+ register "common_soc_config" = "{ .gspi[0] = { .speed_mhz = 1, .early_init = 1, }, + .i2c[6] = { + .speed = I2C_SPEED_FAST, + .rise_time_ns = 66, + .fall_time_ns = 90, + .data_hold_time_ns = 350, + }, }" device domain 0 on |