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authorWisley Chen <wisley.chen@quantatw.com>2016-11-10 08:54:56 -0500
committerAaron Durbin <adurbin@chromium.org>2016-11-11 16:14:43 +0100
commit5ecc41b0c9226486da71d6aa95a505877f0fdaeb (patch)
treecf55e96c8cb020564a40207333b5ba7cee9cbbd3
parent232d31899be8d09db1a32052114e87526d00a057 (diff)
downloadcoreboot-5ecc41b0c9226486da71d6aa95a505877f0fdaeb.tar.xz
google/snappy: 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:59034 BRANCH=master TEST=emerge-snappy coreboot chromeos-bootimage Change-Id: Ic9095ae6812ba822c760229e69f5b27c6c244cdf Signed-off-by: Wisley Chen <wisley.chen@quantatw.com> Reviewed-on: https://review.coreboot.org/17361 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
-rw-r--r--src/mainboard/google/reef/variants/snappy/devicetree.cb1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb
index b4c53ea70e..f393019737 100644
--- a/src/mainboard/google/reef/variants/snappy/devicetree.cb
+++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb
@@ -90,6 +90,7 @@ 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