[coreboot-gerrit] Patch merged into coreboot/master: 573429b samus: Set codec PDM clock output to 3MHz
gerrit at coreboot.org
gerrit at coreboot.org
Sat Apr 4 12:40:42 CEST 2015
the following patch was just integrated into master:
commit 573429b09dafa94dac4e1c2b0d9ed33d64676963
Author: Ben Zhang <benzh at chromium.org>
Date: Mon Nov 17 17:21:09 2014 -0800
samus: Set codec PDM clock output to 3MHz
Currently the rt5677 codec outputs 6MHz PDM clock which is
out-of-spec for the speaker amp SSM2537. The amp's GAIN_FS
pin is pulled down to PGND with a 47k resistor, so the
expected PDM clock is 64*FS (~3MHz) according to its datasheet.
The corresponding kernel patch that adds the PDM clock config
option is https://chromium-review.googlesource.com/#/c/230303/
BUG=chrome-os-partner:33303
BRANCH=samus
TEST=flash coreboot with this patch and see PDM CLK went
from 6MHz to 3MHz on samus with a scope.
Change-Id: Icf2c61930175bede1ee8ebc2b0fb17c2938b806c
Signed-off-by: Stefan Reinauer <reinauer at chromium.org>
Original-Commit-Id: b9ba4597515b2fbcc72fa22e296357c454175648
Original-Change-Id: I09acdf47bab4f641981491a84197de234918435e
Original-Signed-off-by: Ben Zhang <benzh at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/230344
Original-Reviewed-by: Dylan Reid <dgreid at chromium.org>
Original-Reviewed-by: Duncan Laurie <dlaurie at chromium.org>
Reviewed-on: http://review.coreboot.org/9277
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi at google.com>
See http://review.coreboot.org/9277 for details.
-gerrit
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