[PATCH v2 2/3] ARM: dts: allwinner: orangepi-zero2: Add default audio routing

["J. Neuschäfer via B4 Relay" <devnull+j.ne.posteo.net@kernel.org>]

From: "J. Neuschäfer" <j.ne@posteo.net>

The Orange Pi Zero Plus 2 has the same pinout[1] as the Orange Pi
Zero[2] (with the possible exception of line-out left/right being
swapped), and the Orange Pi Zero Interface Board is sold[3] as
compatible with both of them. We can thus use the same audio routing.

[1]: http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-Zero-Plus-2.html
[2]: https://linux-sunxi.org/Xunlong_Orange_Pi_Zero#Expansion_Port
[3]: https://orangepi.com/index.php?route=product/product&product_id=871

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---

v2:
- new patch
---
 .../boot/dts/allwinner/sun8i-h3-orangepi-zero-plus2.dts    | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/allwinner/sun8i-h3-orangepi-zero-plus2.dts b/arch/arm/boot/dts/allwinner/sun8i-h3-orangepi-zero-plus2.dts
index 7a6444a10e2534458b7380882ea4fd42bd54fea8..97a3565ac7a819be6b18d324fa6f65d0d1d2b2ad 100644
--- a/arch/arm/boot/dts/allwinner/sun8i-h3-orangepi-zero-plus2.dts
+++ b/arch/arm/boot/dts/allwinner/sun8i-h3-orangepi-zero-plus2.dts
@@ -99,6 +99,20 @@ wifi_pwrseq: pwrseq {
 	};
 };
 
+/*
+ * 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.
+ * - http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-Zero-Plus-2.html
+ * - Allwinner H3 Datasheet, section 3.1. Pin Characteristics
+ */
+&codec {
+	allwinner,audio-routing =
+		"Line Out", "LINEOUT",
+		"MIC1", "Mic",
+		"Mic",  "MBIAS";
+	status = "disabled";
+};
+
 &de {
 	status = "okay";
 };

-- 
2.48.0.rc1.219.gb6b6757d772