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| author | Peichao Wang <peichao.wang@bitland.corp-partner.google.com> | 2019-11-19 11:42:42 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-11-23 10:55:17 +0000 |
| commit | d0c52b72f3b225d13a4f7ab79bcba5ca8af166a8 (patch) | |
| tree | 52d0f4cad0e53eb4c1c0831860eda9a832f53d03 | |
| parent | 1bdfe8c2805db396c7188dd5264bf80e7782b8ba (diff) | |
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>
| -rw-r--r-- | src/mainboard/google/kahlee/variants/treeya/devicetree.cb | 1 |
1 files changed, 1 insertions, 0 deletions
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 |