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| author | Sathyanarayana Nujella <sathyanarayana.nujella@intel.com> | 2016-10-07 11:27:10 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-10-10 17:12:14 +0200 |
| commit | 46445fc3c7be386976f19581c0543eb26ee46029 (patch) | |
| tree | 0cf9c9f1435d6581f5520c4b726ea0f27cfdea67 /src/mainboard/google/reef | |
| parent | 6dfffdc2975eedd75f04c8b39a5e1147d5a45db8 (diff) | |
| download | coreboot-46445fc3c7be386976f19581c0543eb26ee46029.tar.xz | |
google/reef: update timing of sdmode toggling
Maxim98357a speaker amp requires BCLK & SFRM to be active
and stable before it is unmuted. If there is a BLCK and no
SFRM, it results in a pop sound.
sdmode_delay property already exists which facilitates this
configuration. This patch updates "sdmode_delay" to avoid
pop sound.
BUG=chrome-os-partner:58356
BRANCH=None
TEST=while audio playback via headset, remove headset.
Audio will be switched playback to speaker. Observe if
pop sound comes from speaker.
Change-Id: I7ad68caa88d7b3ff52ac1379fe6564de27d97777
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Reviewed-on: https://review.coreboot.org/16933
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Diffstat (limited to 'src/mainboard/google/reef')
| -rw-r--r-- | src/mainboard/google/reef/variants/baseboard/devicetree.cb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb index 43ec2ed054..989acd9d25 100644 --- a/src/mainboard/google/reef/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/reef/variants/baseboard/devicetree.cb @@ -85,6 +85,7 @@ chip soc/intel/apollolake device pci 0e.0 on # - Audio chip drivers/generic/max98357a register "sdmode_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_76)" + register "sdmode_delay" = "5" device generic 0 on end end end |