mb/google/brox: Configure I2C timing for I2C devices
Configure I2C0/1 timing in devicetree to meet timing requirement.
(THIGH(us) minimum is 0.6us).
Before:
I2C0 : THIGH(us) 0.595us
I2C1 : THIGH(us) 0.582us
After:
I2C0 : THIGH(us) 0.673us
I2C1 : THIGH(us) 0.666us
Change-Id: I79af4fde4eb08d4eb896794756a633701bebb755
Signed-off-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81348
Reviewed-by: Shelley Chen <shchen@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
diff --git a/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb b/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
index 3e0e7fb..9ed0602 100644
--- a/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
+++ b/src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb
@@ -97,13 +97,13 @@
.i2c[0] = {
.speed = I2C_SPEED_FAST,
.rise_time_ns = 650,
- .fall_time_ns = 400,
+ .fall_time_ns = 350,
.data_hold_time_ns = 50,
},
.i2c[1] = {
.speed = I2C_SPEED_FAST,
.rise_time_ns = 600,
- .fall_time_ns = 400,
+ .fall_time_ns = 350,
.data_hold_time_ns = 50,
},
.i2c[2] = {