From: J. Neuschäfer <j.ne@posteo.net>
Date: Thu, 11 Sep 2025 20:23:55 +0000 (+0200)
Subject: ARM: dts: allwinner: orangepi-zero: Add default audio routing
X-Git-Tag: v6.18-rc1~147^2~13^2~12
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3173a760021b9340923831aa5edc5530d61a6b9b;p=thirdparty%2Fkernel%2Flinux.git

ARM: dts: allwinner: orangepi-zero: Add default audio routing

Line out playback and microphone capture work, after enabling the
corresponding ALSA controls. Tested with the Orange Pi Zero interface
board.

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Link: https://patch.msgid.link/20250911-opz-audio-v3-1-9dfd317a8163@posteo.net
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---

diff --git a/arch/arm/boot/dts/allwinner/sun8i-h2-plus-orangepi-zero.dts b/arch/arm/boot/dts/allwinner/sun8i-h2-plus-orangepi-zero.dts
index 1b001f2ad0efd..b23cec5b89ebf 100644
--- a/arch/arm/boot/dts/allwinner/sun8i-h2-plus-orangepi-zero.dts
+++ b/arch/arm/boot/dts/allwinner/sun8i-h2-plus-orangepi-zero.dts
@@ -112,6 +112,20 @@
 	};
 };
 
+/*
+ * Audio input/output is exposed on the 13-pin header and can't be used for
+ * anything else. However, adapter boards may use different audio routing.
+ * - https://linux-sunxi.org/Xunlong_Orange_Pi_Zero#Expansion_Port
+ * - Allwinner H3 Datasheet, section 3.1. Pin Characteristics
+ */
+&codec {
+	allwinner,audio-routing =
+		"Line Out", "LINEOUT",
+		"MIC1", "Mic",
+		"Mic",  "MBIAS";
+	status = "disabled";
+};
+
 &cpu0 {
 	cpu-supply = <&reg_vdd_cpux>;
 };