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,
 	}"