ODROID-M1/M1S: dtb/dtbo: add to switch FIQ debug port to UART2

By default, the debug port is binded to /dev/ttyFIQ0 for the FIQ
debugger. In order to switch the port to generic UART port,
'fiq-debugger' must be disabled and 'uart2' is required to be enabled
with proper pins.

Change-Id: I213cd319a119bde044458a59b2b0a1bded1f9546
Signed-off-by: Dongjin Kim <tobetter@gmail.com>

arch/arm64/boot/dts/rockchip/overlays/odroidm1/Makefile

@@ -5,6 +5,7 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP_ODROIDM1) += \
 	can0.dtbo \
 	dht11.dtbo \
 	display_vu8m.dtbo \
+	fiq0_to_uart2.dtbo \
 	hktft32.dtbo \
 	i2c0.dtbo \
 	i2c1.dtbo \

arch/arm64/boot/dts/rockchip/overlays/odroidm1/fiq0_to_uart2.dts

@@ -0,0 +1,23 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	fragment@0 {
+		target = <&fiq_debugger>;
+
+		__overlay__ {
+			status = "disabled";
+		};
+	};
+
+	fragment@1 {
+		target = <&uart2>;
+
+		__overlay__ {
+			status = "okay";
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart2m0_xfer>;
+		};
+	};
+};

arch/arm64/boot/dts/rockchip/overlays/odroidm1s/Makefile

@@ -7,6 +7,7 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP_ODROIDM1) += \
 	display_3_5.dtbo \
 	display_5_0.dtbo \
 	display_vu8s.dtbo \
+	fiq0_to_uart2.dtbo \
 	hktft32.dtbo \
 	i2c0.dtbo \
 	i2c1.dtbo \

arch/arm64/boot/dts/rockchip/overlays/odroidm1s/fiq0_to_uart2.dts

@@ -0,0 +1,23 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	fragment@0 {
+		target = <&fiq_debugger>;
+
+		__overlay__ {
+			status = "disabled";
+		};
+	};
+
+	fragment@1 {
+		target = <&uart2>;
+
+		__overlay__ {
+			status = "okay";
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart2m0_xfer>;
+		};
+	};
+};