diff options
| author | Duncan Laurie <dlaurie@chromium.org> | 2017-05-16 19:04:16 -0700 |
|---|---|---|
| committer | Duncan Laurie <dlaurie@chromium.org> | 2017-05-17 17:56:12 +0200 |
| commit | 4f7d536ed375d6aafc7cc5971dc51a7bc4a021fb (patch) | |
| tree | 52686f4e719f86c7f43a10ed406bbe18e82914ca | |
| parent | 8888072230ccd38c71fec0d950137df51d9f4ab9 (diff) | |
mb/google/eve: Update touchpad I2C timing
The touchpad frequency was still slightly above 400kHz so tweak
the timing values manually to get under the spec limit.
BUG=b:35583133
TEST=verified the bus frequency with a scope to be < 400kHz
Change-Id: I8bd071a8e15a791b7551ac256797e87abd6b5e5a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/19727
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
| -rw-r--r-- | src/mainboard/google/eve/devicetree.cb | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb index 1305f9cb51..97ae3c7ca5 100644 --- a/src/mainboard/google/eve/devicetree.cb +++ b/src/mainboard/google/eve/devicetree.cb @@ -182,8 +182,12 @@ chip soc/intel/skylake register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8" register "i2c[2]" = "{ .speed = I2C_SPEED_FAST, - .rise_time_ns = 111, - .fall_time_ns = 41, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 186, + .scl_hcnt = 93, + .sda_hold = 36, + } }" # Audio |