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authorSathyanarayana Nujella <sathyanarayana.nujella@intel.com>2016-10-07 11:27:10 -0700
committerMartin Roth <martinroth@google.com>2016-10-10 17:12:14 +0200
commit46445fc3c7be386976f19581c0543eb26ee46029 (patch)
tree0cf9c9f1435d6581f5520c4b726ea0f27cfdea67 /src/mainboard/google/reef
parent6dfffdc2975eedd75f04c8b39a5e1147d5a45db8 (diff)
downloadcoreboot-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.cb1
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