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| author | Casper Chang <casper_chang@wistron.corp-partner.google.com> | 2019-07-12 22:06:05 +0800 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2019-07-15 18:13:20 +0000 |
| commit | 23c923ba727412eb151539c17c92b201316c0324 (patch) | |
| tree | 893fdfbd2a4ae63a74eb6596c522972ae115f517 | |
| parent | d3ce8c844221bfbcfd64d14e3ed815a5a39fcd72 (diff) | |
| download | coreboot-23c923ba727412eb151539c17c92b201316c0324.tar.gz coreboot-23c923ba727412eb151539c17c92b201316c0324.tar.bz2 coreboot-23c923ba727412eb151539c17c92b201316c0324.zip | |
mb/google/sarien/variants/arcada: Set data hold time for touchpad
Elan's touchpad requires min 0.3us data hold time.
To fine tune the data hold time of i2c1 to meet
specification of Elan's touchpad.
BUG=None
BRANCH=None
TEST=Verified data hold time of i2c1 is around 320ns
Signed-off-by: Casper Chang <casper_chang@wistron.corp-partner.google.com>
Change-Id: I0fa9db3b50e74f193261be96bd9e305bb19841e3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34288
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Crews <ncrews@google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
| -rw-r--r-- | src/mainboard/google/sarien/variants/arcada/devicetree.cb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/google/sarien/variants/arcada/devicetree.cb b/src/mainboard/google/sarien/variants/arcada/devicetree.cb index ce960a74c0ad..cd1925840afb 100644 --- a/src/mainboard/google/sarien/variants/arcada/devicetree.cb +++ b/src/mainboard/google/sarien/variants/arcada/devicetree.cb @@ -175,6 +175,7 @@ chip soc/intel/cannonlake .speed = I2C_SPEED_FAST, .rise_time_ns = 52, .fall_time_ns = 110, + .data_hold_time_ns = 330, }, .i2c[4] = { .early_init = 1, |