Peichao Li has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/36945 )
Change subject: mb/google/kahlee/treeya: Make sure touchpad data hold time more than 300ns ......................................................................
mb/google/kahlee/treeya: Make sure touchpad data hold time more than 300ns
According to SI team request, need tune I2C bus2 data hold time more than 300ns
BUG=b:144736027 TEST=build firmware and masure I2C bus2 data hold time
Signed-off-by: Peichao Wang peichao.wang@bitland.corp-partner.google.com Change-Id: Idc58a595c77eba8544f27682a284be6aac5dbe25 --- M src/mainboard/google/kahlee/variants/treeya/devicetree.cb 1 file changed, 1 insertion(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/36945/1
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