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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>
This commit is contained in:
Wisley Chen 2022-10-03 15:34:20 +06:00 committed by Martin Roth
parent f9fea868ba
commit 11bf65caef
1 changed files with 25 additions and 1 deletions
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26
src/mainboard/google/brya/variants/yaviks/overridetree.cb
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@ -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,
}
},
}"