From afd40b2e2f547baaa367541f7a53d033c0321bf2 Mon Sep 17 00:00:00 2001 From: Justin TerAvest Date: Mon, 10 Dec 2018 08:12:36 -0700 Subject: mb/google/octopus/var/ampton: Tune I2C Audio The previous settings caused the I2C frequency for the audio bus to be too high, at 417kHz. The settings in this commit correct the frequency to 396kHz. BUG=b:119423345 Change-Id: Ibed886e6e1b0df4df6b87f6291e515364b3bf718 Signed-off-by: Justin TerAvest Reviewed-on: https://review.coreboot.org/c/30129 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Furquan Shaikh --- src/mainboard/google/octopus/variants/ampton/overridetree.cb | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/mainboard/google/octopus/variants/ampton/overridetree.cb b/src/mainboard/google/octopus/variants/ampton/overridetree.cb index 46d4dcdb22..b3f9416c80 100644 --- a/src/mainboard/google/octopus/variants/ampton/overridetree.cb +++ b/src/mainboard/google/octopus/variants/ampton/overridetree.cb @@ -12,8 +12,9 @@ chip soc/intel/apollolake }, .i2c[5] = { .speed = I2C_SPEED_FAST, - .rise_time_ns = 104, - .fall_time_ns = 52, + .rise_time_ns = 60, + .fall_time_ns = 20, + .data_hold_time_ns = 350, }, .i2c[6] = { .speed = I2C_SPEED_FAST, -- cgit v1.2.3