verdin-imx8: add overlay to support nau8822 codec btl

Add overlay to configure the two loudspeaker outputs as a
single Bridge Tied Load output getting higher output power.

Related-to: ELB-4489
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/overlays/verdin-imx8mm_nau8822-btl_overlay.dts b/overlays/verdin-imx8mm_nau8822-btl_overlay.dts
new file mode 100644
index 0000000..463852c
--- /dev/null
+++ b/overlays/verdin-imx8mm_nau8822-btl_overlay.dts
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright 2023 Toradex
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "toradex,verdin-imx8mm";
+};
+
+// Allow configuring the two loudspeaker outputs as a
+// single Bridge Tied Load output getting higher output power.
+
+&nau8822_1a {
+	nuvoton,spk-btl;
+};