From: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Date: Tue, 25 Feb 2025 14:33:54 +0000 (-0300)
Subject: arm64: dts: mediatek: mt8390-genio-common: Add delay codec for DMIC
X-Git-Tag: v6.15-rc1~159^2~31^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=42fbcb45b796caecb797a6ef3548398aed88eb0a;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: mediatek: mt8390-genio-common: Add delay codec for DMIC

The signal from the dual digital microphones connected to the DMIC_BE
takes 30ms to settle after being enabled. Add a dmic-codec with
corresponding wakeup-delay-ms to prevent an initial "pop" sound when
recording with the microphones.

Co-developed-by: Zoran Zhan <zoran.zhan@mediatek.com>
Signed-off-by: Zoran Zhan <zoran.zhan@mediatek.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250225-genio700-dmic-v2-8-3076f5b50ef7@collabora.com
[Angelo: Resolved merge conflicts]
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

diff --git a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
index f0615674e3422..60139e6dffd8e 100644
--- a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
@@ -38,6 +38,13 @@
 		stdout-path = "serial0:921600n8";
 	};
 
+	dmic_codec: dmic-codec {
+		#sound-dai-cells = <0>;
+		compatible = "dmic-codec";
+		num-channels = <2>;
+		wakeup-delay-ms = <30>;
+	};
+
 	firmware {
 		optee {
 			compatible = "linaro,optee-tz";
@@ -1075,6 +1082,14 @@
 			sound-dai = <&pmic 0>;
 		};
 	};
+
+	dai-link-1 {
+		link-name = "DMIC_BE";
+
+		codec {
+			sound-dai = <&dmic_codec>;
+		};
+	};
 };
 
 &spi2 {