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authorMatt Wells <dawells@google.com>2018-07-19 12:21:22 -0600
committerPatrick Georgi <pgeorgi@google.com>2018-07-23 08:10:05 +0000
commitc8e974f063af7773f91c267071d747a496b2e9ae (patch)
treea4bb2256c16de59da3a5512c37ce5d991df40e3d
parent8583a716bc53e7a12998849045da4e214b3025db (diff)
downloadcoreboot-c8e974f063af7773f91c267071d747a496b2e9ae.tar.xz
mb/google/kahlee: Update i2c timings
Change the I2c timings to the latest measurements. BUG=b:72442912 TEST=Boot grunt Change-Id: I6f9538d26b77ae952ad585e569b3a836e1a09da2 Signed-off-by: Matt Wells <dawells@google.com> Reviewed-on: https://review.coreboot.org/27553 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
-rw-r--r--src/mainboard/google/kahlee/variants/grunt/devicetree.cb16
1 files changed, 8 insertions, 8 deletions
diff --git a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
index 3863100b63..a5229b44c2 100644
--- a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
@@ -24,30 +24,30 @@ chip soc/amd/stoneyridge
# Enable I2C0 for audio, USB3 hub at 400kHz
register "i2c[0]" = "{
.speed = I2C_SPEED_FAST,
- .rise_time_ns = 95,
- .fall_time_ns = 3,
+ .rise_time_ns = 151,
+ .fall_time_ns = 50,
}"
# Enable I2C1 for H1 at 400kHz
register "i2c[1]" = "{
.early_init = 1,
.speed = I2C_SPEED_FAST,
- .rise_time_ns = 84,
- .fall_time_ns = 4,
+ .rise_time_ns = 62,
+ .fall_time_ns = 2,
}"
# Enable I2C2 for trackpad, pen at 400kHz
register "i2c[2]" = "{
.speed = I2C_SPEED_FAST,
- .rise_time_ns = 117,
- .fall_time_ns = 113,
+ .rise_time_ns = 170,
+ .fall_time_ns = 91,
}"
# Enable I2C3 for touchscreen at 400kHz
register "i2c[3]" = "{
.speed = I2C_SPEED_FAST,
- .rise_time_ns = 82,
- .fall_time_ns = 67,
+ .rise_time_ns = 84,
+ .fall_time_ns = 50,
}"
device cpu_cluster 0 on