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authorDuncan Laurie <dlaurie@chromium.org>2017-05-16 19:04:16 -0700
committerDuncan Laurie <dlaurie@chromium.org>2017-05-17 17:56:12 +0200
commit4f7d536ed375d6aafc7cc5971dc51a7bc4a021fb (patch)
tree52686f4e719f86c7f43a10ed406bbe18e82914ca /src/mainboard
parent8888072230ccd38c71fec0d950137df51d9f4ab9 (diff)
downloadcoreboot-4f7d536ed375d6aafc7cc5971dc51a7bc4a021fb.tar.xz
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>
Diffstat (limited to 'src/mainboard')
-rw-r--r--src/mainboard/google/eve/devicetree.cb8
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