summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorKane Chen <kane_chen@pegatron.corp-partner.google.com>2020-09-23 14:26:13 +0800
committerAaron Durbin <adurbin@chromium.org>2020-09-25 15:09:42 +0000
commitfb2f356d89de19994214dbe01ef7c02e02f24be0 (patch)
tree62b828c4933c49d6192e341b26d548631066f385
parent4dcccc83656cfe98af93ef47e6fbc269f16c900d (diff)
downloadcoreboot-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.cb4
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,
}"