radxa zero: add uart-ao-b-89 for v1.51 and later

Signed-off-by: Nascs Fang <[email protected]>
nascs · Apr 19, 2024 · b84fa14 · b84fa14
1 parent 4a58709
commit b84fa14
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diff --git a/arch/arm64/boot/dts/amlogic/overlays/Makefile b/arch/arm64/boot/dts/amlogic/overlays/Makefile
@@ -40,6 +40,7 @@ dtb-$(CONFIG_ARCH_MESON) += \
 	radxa-zero-enable-vddio_c.dtbo \
 	radxa-zero-led-8-off.dtbo \
 	radxa-zero-led-10-off.dtbo \
+	radxa-zero-uart-ao-b-89-v1-51.dtbo \
 	radxa-zero-uart-ao-b-89.dtbo \
 	radxa-zero2-enable-vddio_c.dtbo \
 	radxa-zero2-radxa-25w-poe.dtbo

diff --git a/arch/arm64/boot/dts/amlogic/overlays/radxa-zero-uart-ao-b-89-v1-51.dts b/arch/arm64/boot/dts/amlogic/overlays/radxa-zero-uart-ao-b-89-v1-51.dts
@@ -0,0 +1,15 @@
+/dts-v1/;
+/plugin/;
+
+#include "radxa-zero-led-8-off.dtsi"
+#include "meson-g12-uart-ao-b-89.dtsi"
+
+/ {
+	metadata {
+		title = "Enable UART_AO-B on GPIOAO_8 and GPIOAO_9";
+		compatible = "radxa,zero";
+		category = "misc";
+		exclusive = "uart_AO_B", "GPIOAO_8", "GPIOAO_9";
+		description = "Enable UART_AO-B on GPIOAO_8 and GPIOAO_9.\nOn Radxa Zero this is TX pin 35 & RX pin 37.\nThis applies to V1.51 and later.";
+	};
+};