[coreboot-gerrit] Patch merged into coreboot/master: 573429b samus: Set codec PDM clock output to 3MHz

[gerrit at coreboot.org]

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