diff options
| author | Wisley Chen <wisley.chen@quanta.corp-partner.google.com> | 2022-10-03 15:34:20 +0600 |
|---|---|---|
| committer | Martin Roth <martin.roth@amd.corp-partner.google.com> | 2022-10-07 21:16:30 +0000 |
| commit | 11bf65caef5f786a00bc0c8913ccf6ef4dcd7932 (patch) | |
| tree | f024c908b4b02f5def6e3241e470f0f8268c976f /src/mainboard/google | |
| parent | f9fea868ba9ce077f102c83296ffbd32c8e9ccf8 (diff) | |
mb/google/nissa/var/yaviks: Config I2C frequency
Update parameters for all I2C devices.
After applied this patch, the measured the I2C frequency meets spec
BUG=b:249953708
TEST=FW_NAME=yaviks emerge-nissa coreboot
flash and measure the all I2C devices
1. I2C0 (TPM): 980.6 Khz
2. I2C1 (TouchScreen); 392.6 Khz
3. I2C3 （Audio): 394.9 Khz
4. I2C5 (Touchpad): 391.6 Khz
Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Change-Id: I33c2891f17bc3c572bbfcbf30bbbdef9eb850ce7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68082
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Diffstat (limited to 'src/mainboard/google')
| -rw-r--r-- | src/mainboard/google/brya/variants/yaviks/overridetree.cb | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/variants/yaviks/overridetree.cb b/src/mainboard/google/brya/variants/yaviks/overridetree.cb index e30cc06e7b..bfee36017e 100644 --- a/src/mainboard/google/brya/variants/yaviks/overridetree.cb +++ b/src/mainboard/google/brya/variants/yaviks/overridetree.cb @@ -40,16 +40,40 @@ chip soc/intel/alderlake register "common_soc_config" = "{ .i2c[0] = { .early_init = 1, - .speed = I2C_SPEED_FAST, + .speed = I2C_SPEED_FAST_PLUS, + .speed_config[0] = { + .speed = I2C_SPEED_FAST_PLUS, + .scl_lcnt = 56, + .scl_hcnt = 30, + .sda_hold = 7, + } }, .i2c[1] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, .i2c[3] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, .i2c[5] = { .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 158, + .scl_hcnt = 79, + .sda_hold = 7, + } }, }" |