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mainboard/puff: Tune ALC5682I rise_fall times on i2c 

Tunes the headphone amp i2c with measured signal shape.

BUG=b:147192377
BRANCH=none
TEST=builds and measured i2c frequency below 400khz

Change-Id: I60f73bcf60ed140f595c953be371b982a63f7b95
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38459
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Daniel Kurtz <djkurtz@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Edward O'Callaghan 2020-01-17 18:47:11 +11:00 committed by Edward O'Callaghan
parent ef43711aad
commit 4f176913c1
1 changed files with 2 additions and 2 deletions
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4
src/mainboard/google/hatch/variants/puff/overridetree.cb
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@ -161,8 +161,8 @@ chip soc/intel/cannonlake
},
.i2c[4] = {
.speed = I2C_SPEED_FAST,
.rise_time_ns = 0,
.fall_time_ns = 0,
.rise_time_ns = 60,
.fall_time_ns = 60,
},
}"