diff options
| author | Kane Chen <kane_chen@pegatron.corp-partner.google.com> | 2020-09-23 14:26:13 +0800 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2020-09-25 15:09:42 +0000 |
| commit | fb2f356d89de19994214dbe01ef7c02e02f24be0 (patch) | |
| tree | 62b828c4933c49d6192e341b26d548631066f385 | |
| parent | 4dcccc83656cfe98af93ef47e6fbc269f16c900d (diff) | |
| download | coreboot-fb2f356d89de19994214dbe01ef7c02e02f24be0.tar.xz | |
mb/google/zork: Modify I2C3 CLK for Woomax to meet I2C specification
Modify I2C3 setting to follow I2C specification(lower than 400kHz).
Original setting:
.rise_time_ns = 125
.fall_time_ns = 37
Change to:
.rise_time_ns = 110
.fall_time_ns = 34
BUG=b:169207742
BRANCH=None
TEST=emerge-zork coreboot chromeos-bootimage
Signed-off-by: Kane Chen <kane_chen@pegatron.corp-partner.google.com>
Change-Id: I0f0b791c3e701ebf6b336a8cb259eeb74c46af5a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45644
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
| -rw-r--r-- | src/mainboard/google/zork/variants/woomax/overridetree.cb | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mainboard/google/zork/variants/woomax/overridetree.cb b/src/mainboard/google/zork/variants/woomax/overridetree.cb index d1c5507feb..8d94a97277 100644 --- a/src/mainboard/google/zork/variants/woomax/overridetree.cb +++ b/src/mainboard/google/zork/variants/woomax/overridetree.cb @@ -60,8 +60,8 @@ chip soc/amd/picasso # Enable I2C3 for H1 400kHz register "i2c[3]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 125, /* 0 to 1.26v (1.8 * .7) */ - .fall_time_ns = 37, /* 1.26v to 0 */ + .rise_time_ns = 110, /* 0 to 1.26v (1.8 * .7) */ + .fall_time_ns = 34, /* 1.26v to 0 */ .early_init = true, }" |