mb/google/dedede/variants/waddledoo: Adjust I2Cs CLK to meet spec
After adjustment on waddledoo
Touch Pad CLK: 392.9 KHz
Touch Screen CLK: 387.4 KHz
Audio CLK: 350.9 KHz
BUG=b:151302522
BRANCH=master
TEST=emerge-dedede coreboot chromeos-bootimage
measure by scope with waddledoo.
Signed-off-by: John Su <john_su@compal.corp-partner.google.com>
Change-Id: Iec02a751f1effdbefbb2969db2fd57f27ecdd033
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42187
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb b/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
index 4546c9f..b8be926 100644
--- a/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/waddledoo/overridetree.cb
@@ -24,8 +24,8 @@
},
.i2c[0] = {
.speed = I2C_SPEED_FAST,
- .rise_time_ns = 66,
- .fall_time_ns = 90,
+ .rise_time_ns = 270,
+ .fall_time_ns = 270,
.data_hold_time_ns = 350,
},
.i2c[1] = {
@@ -33,6 +33,8 @@
},
.i2c[2] = {
.speed = I2C_SPEED_FAST,
+ .rise_time_ns = 200,
+ .fall_time_ns = 200,
},
.i2c[3] = {
.speed = I2C_SPEED_FAST,
@@ -41,8 +43,8 @@
.speed = I2C_SPEED_FAST,
.speed_config[0] = {
.speed = I2C_SPEED_FAST,
- .scl_lcnt = 176,
- .scl_hcnt = 95,
+ .scl_lcnt = 200,
+ .scl_hcnt = 120,
.sda_hold = 36,
}
},