From 053c901548b751dd10eeae5e0afae8359290bede Mon Sep 17 00:00:00 2001 From: Terry Cheong Date: Tue, 12 Dec 2023 11:04:33 +0800 Subject: mb/google: Reduce DA7219 mic detect threshold to 200ohm The original DA7219 is designed to use a 500ohm mic detection threshold. Some headset mics (e.g. Logitech H111) have a lower DC impedance that is lower than the threshold and thus cannot be detected. Lower the threshold to 200ohm to match the new default value provided by Renasas as in https://patchwork.kernel.org/project/alsa-devel/patch/20231201042933.26392-1-David.Rau.opensource@dm.renesas.com/ to support such headsets. BUG=b:314062160,b:308207450 Change-Id: I6415e84a4622e0c61bc74b94536fe734048a043f Signed-off-by: Terry Cheong Reviewed-on: https://review.coreboot.org/c/coreboot/+/79436 Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai Reviewed-by: Paul Menzel Reviewed-by: Subrata Banik --- src/mainboard/google/reef/variants/pyro/devicetree.cb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/mainboard/google/reef/variants/pyro/devicetree.cb') diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb index 7e032b0ecb..a422b77774 100644 --- a/src/mainboard/google/reef/variants/pyro/devicetree.cb +++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb @@ -166,7 +166,7 @@ chip soc/intel/apollolake chip drivers/i2c/da7219 register "irq" = "ACPI_IRQ_LEVEL_LOW(GPIO_116_IRQ)" register "btn_cfg" = "50" - register "mic_det_thr" = "500" + register "mic_det_thr" = "200" register "jack_ins_deb" = "20" register "jack_det_rate" = ""32ms_64ms"" register "jack_rem_deb" = "1" -- cgit v1.2.3