From 137b9c59eab4fe2caeb3762183f41c3ca0b3c94a Mon Sep 17 00:00:00 2001 From: Tongtong Pan Date: Tue, 24 Mar 2026 21:45:37 +0800 Subject: [PATCH] mb/google/var/fatcat/lapis: adjust 'cirrus,detect-us' property to improve the noise situation When a 3.5 mm headset is connected, noise occurs during system startup or wake-up from suspend.Setting this value "detect-us" lower should improve the noise situation, therefore, we adjust detect_us to 100us. BUG=b/454450799 TEST=cat /sys/kernel/debug/regmap//registers | grep 010040 to ensure the changes take effect and improve the noise situation. Change-Id: I0c94a1d9862f6e201b451c19f292a12fe3b9ed68 Signed-off-by: Tongtong Pan Reviewed-on: https://review.coreboot.org/c/coreboot/+/91836 Reviewed-by: Subrata Banik Tested-by: build bot (Jenkins) --- src/mainboard/google/fatcat/variants/lapis/overridetree.cb | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mainboard/google/fatcat/variants/lapis/overridetree.cb b/src/mainboard/google/fatcat/variants/lapis/overridetree.cb index 3353bf5c8d..80169a62e3 100644 --- a/src/mainboard/google/fatcat/variants/lapis/overridetree.cb +++ b/src/mainboard/google/fatcat/variants/lapis/overridetree.cb @@ -508,6 +508,7 @@ chip soc/intel/pantherlake # SoundWire Link 3 ID 0 register "desc" = ""Headset Codec"" register "sub" = ""1337"" + register "detect_us" = "DET_100_US" device generic 3.0 on end end chip drivers/soundwire/cs35l56