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| author | Kevin Chiu <kevin.chiu@quanta.corp-partner.google.com> | 2020-08-17 15:08:22 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-08-19 07:14:11 +0000 |
| commit | 39fd923b0b243476f4cd608386fc2c46ab62d225 (patch) | |
| tree | e635383f0e0b8713a4ed22238076c4022001f9a3 /src/mainboard | |
| parent | 7f94b405be122b85438f4cd17aa1d43a106b987f (diff) | |
| download | coreboot-39fd923b0b243476f4cd608386fc2c46ab62d225.tar.xz | |
mb/google/zork: Adjust Dirinboz I2C values
BUG=b:164757545
BRANCH=master
TEST=1. emerge-zork coreboot chromeos-bootimage
2. power on proto board successfully
3. measure i2c freq by scope is close to 400kHz
Change-Id: Icb27ff8a4960caaebc542ee4e507f1611da5a77e
Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44515
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/zork/variants/dirinboz/overridetree.cb | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/mainboard/google/zork/variants/dirinboz/overridetree.cb b/src/mainboard/google/zork/variants/dirinboz/overridetree.cb index 7645ba33e3..c43063c688 100644 --- a/src/mainboard/google/zork/variants/dirinboz/overridetree.cb +++ b/src/mainboard/google/zork/variants/dirinboz/overridetree.cb @@ -1,5 +1,4 @@ # SPDX-License-Identifier: GPL-2.0-or-later - chip soc/amd/picasso # Start : OPN Performance Configuration @@ -18,16 +17,19 @@ chip soc/amd/picasso # End : OPN Performance Configuration - # I2C2 for touchscreen and trackpad + # I2C2 for touchscreen and trackpad register "i2c[2]" = "{ .speed = I2C_SPEED_FAST, + .rise_time_ns = 18, /* 0 to 2.31 (3.3 * .7) */ + .fall_time_ns = 57, /* 2.31 to 0 */ }" # I2C3 for H1 - register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, + .rise_time_ns = 184, /* 0 to 1.26v (1.8 * .7) */ + .fall_time_ns = 42, /* 1.26v to 0 */ .early_init = true, }" |