From d0c52b72f3b225d13a4f7ab79bcba5ca8af166a8 Mon Sep 17 00:00:00 2001 From: Peichao Wang Date: Tue, 19 Nov 2019 11:42:42 +0800 Subject: mb/google/kahlee/treeya: Set touchpad hold time to 400ns According to SI team request, need to tune I2C bus 2 data hold time more than 300ns BUG=b:144736027 TEST=build firmware and measure I2C bus 2 data hold time Signed-off-by: Peichao Wang Change-Id: Idc58a595c77eba8544f27682a284be6aac5dbe25 Reviewed-on: https://review.coreboot.org/c/coreboot/+/36945 Reviewed-by: Patrick Georgi Reviewed-by: Martin Roth Tested-by: build bot (Jenkins) --- src/mainboard/google/kahlee/variants/treeya/devicetree.cb | 1 + 1 file changed, 1 insertion(+) (limited to 'src/mainboard') diff --git a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb index e8477eeb6a..e35f00c380 100644 --- a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb +++ b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb @@ -44,6 +44,7 @@ chip soc/amd/stoneyridge .speed = I2C_SPEED_FAST, .rise_time_ns = 3, .fall_time_ns = 2, + .data_hold_time_ns = 400, }" # Enable I2C3 for touchscreen at 400kHz -- cgit v1.2.3