Patrick Georgi submitted this change.
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 <peichao.wang@bitland.corp-partner.google.com>
Change-Id: Idc58a595c77eba8544f27682a284be6aac5dbe25
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36945
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
M src/mainboard/google/kahlee/variants/treeya/devicetree.cb
1 file changed, 1 insertion(+), 0 deletions(-)
diff --git a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
index e8477ee..e35f00c 100644
--- a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
@@ -44,6 +44,7 @@
.speed = I2C_SPEED_FAST,
.rise_time_ns = 3,
.fall_time_ns = 2,
+ .data_hold_time_ns = 400,
}"
# Enable I2C3 for touchscreen at 400kHz
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