diff options
| author | Eric Lai <ericr_lai@compal.corp-partner.google.com> | 2021-08-13 17:04:45 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-08-16 14:54:18 +0000 |
| commit | 637470c4387b25f4fc319ea9af362c31c856dac5 (patch) | |
| tree | 115ea70da2a5067b58552deb8fceae9714cfa976 /src | |
| parent | 93a6c39b867b1d1615724bebad5b260f1e3f866f (diff) | |
mb/google/brya: Add I2C parameter
Add I2C parameters to make sure each bus speed is around 390kHz.
BUG=b:188793264
TEST=Measure by scope.
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: Ib47228b8684c44f6acfec9e9e4b6e7b18ba6f6c0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56970
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Varshit B Pandya <varshit.b.pandya@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb b/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb index 8a779bca05..3281902464 100644 --- a/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb +++ b/src/mainboard/google/brya/variants/baseboard/brya/devicetree.cb @@ -95,19 +95,34 @@ chip soc/intel/alderlake register "common_soc_config" = "{ .i2c[0] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 650, + .fall_time_ns = 400, + .data_hold_time_ns = 50, }, .i2c[1] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 650, + .fall_time_ns = 400, + .data_hold_time_ns = 50, }, .i2c[2] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 900, + .fall_time_ns = 400, + .data_hold_time_ns = 50, }, .i2c[3] = { .early_init = 1, .speed = I2C_SPEED_FAST, + .rise_time_ns = 600, + .fall_time_ns = 400, + .data_hold_time_ns = 50, }, .i2c[5] = { .speed = I2C_SPEED_FAST, + .rise_time_ns = 650, + .fall_time_ns = 400, + .data_hold_time_ns = 50, }, }" |