Import Mediatek/Ralink dtsi patches against OpenWRT dtsi files

This revision suggests dtsi patches to be used with the original OpenWRT
dtsi files so we can re-use what has already been done in OpenWRT for the
Mediatek/Ralink SoCs.

The only thing that is required after importing this revision should be
the following:
1. Import OpenWRT dts/dtsi files into sys/gnu/dts/mips
2. Run the following script in sys/gnu/dts/mips:
for f in `ls [mr]t*.dtsi`; do
printf "\n#include <fbsd-$f>\n" > $f
done

This will apply our dtsi patches to OpenWRT's dtsi files and will allow us
to re-use dts/dtsi files for ~170 Mediatek/Ralink boards.

Currently our drivers are not 100% compatible with OpenWRT's dts files, but
they're compatible enough.
We can add more functionality in the future that would better leverage the
OpenWRT work as well.

Approved by:	adrian (mentor)
Sponsored by:	Smartcom - Bulgaria AD
Differential Revision:	https://reviews.freebsd.org/D5965

sys/boot/fdt/dts/mips/fbsd-mt7620a.dtsi

@@ -0,0 +1,52 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+
+	usbphy: usbphy {
+		clocks = <&clkctrl 22 &clkctrl 25>;
+		clock-names = "host", "device";
+	};
+
+	pcie@10140000 {
+		/*
+		 * Our driver is different that OpenWRT's, so we need slightly
+		 * different values for the reg property
+		 */
+		reg = <0x10140000 0x10000>;
+
+		/*
+		 * Also, we need resets and clocks defined, so we can properly
+		 * initialize the PCIe
+		 */
+		clocks = <&clkctrl 26>;
+	};
+};

sys/boot/fdt/dts/mips/fbsd-mt7620n.dtsi

@@ -0,0 +1,38 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+
+	usbphy: usbphy {
+		clocks = <&clkctrl 22 &clkctrl 25>;
+		clock-names = "host", "device";
+	};
+};

sys/boot/fdt/dts/mips/fbsd-mt7621.dtsi

@@ -0,0 +1,102 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	gic: interrupt-controller@1fbc0000 {
+		/*
+		 * OpenWRT does not define the GIC interrupt, but we need it
+		 * for now, at least until we re-work our GIC driver
+		 */
+		interrupt-parent = <&cpuintc>;
+		interrupts = <2>;
+	};
+
+	palmbus@1E000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {
+			/*
+			 * Mark uartlite as compatible to mtk,ns16550a instead
+			 * of simply ns16550a so we can autodetect the UART
+			 * clock
+			 */
+			compatible = "mtk,ns16550a";
+		};
+
+		gpio@600 {
+			/*
+			 * Mark gpio as compatible to simple-bus and override
+			 * its #size-cells and provide a default ranges property
+			 * so we can attach instances of our mtk_gpio_v2 driver
+			 * to it for now. Provide exactly the same resources to
+			 * the instances of mtk_gpio_v2.
+			 */
+			compatible = "simple-bus";
+			ranges = <0x0 0x600 0x100>;
+			#size-cells = <1>;
+
+			interrupt-parent = <&gic>;
+
+			gpio0: bank@0 {
+				reg = <0x0 0x100>;
+				interrupts = <GIC_SHARED 6 IRQ_TYPE_LEVEL_HIGH>;
+			};
+
+			gpio1: bank@1 {
+				reg = <0x0 0x100>;
+				interrupts = <GIC_SHARED 6 IRQ_TYPE_LEVEL_HIGH>;
+			};
+
+			gpio2: bank@2 {
+				reg = <0x0 0x100>;
+				interrupts = <GIC_SHARED 6 IRQ_TYPE_LEVEL_HIGH>;
+			};
+		};
+	};
+
+	xhci@1E1C0000 {
+		/*
+		 * A slightly different value for reg size is needed by our
+		 * driver for the moment
+		 */
+		reg = <0x1e1c0000 0x20000>;
+	};
+
+	pcie@1e140000 {
+		/*
+		 * Our driver is different that OpenWRT's, so we need slightly
+		 * different values for the reg property
+		 */
+		reg = <0x1e140000 0x10000>;
+
+		/*
+		 * Also, we need resets and clocks defined, so we can properly
+		 * initialize the PCIe
+		 */
+		resets = <&rstctrl 24>, <&rstctrl 25>, <&rstctrl 26>;
+		clocks = <&clkctrl 24>, <&clkctrl 25>, <&clkctrl 26>;
+	};
+};

sys/boot/fdt/dts/mips/fbsd-mt7628an.dtsi

@@ -0,0 +1,88 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uart2@e00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uart2@e00 {
+			/*
+			 * Mark uartlite as compatible to mtk,ns16550a instead
+			 * of simply ns16550a so we can autodetect the UART
+			 * clock
+			 */
+			compatible = "mtk,ns16550a";
+		};
+
+		gpio@600 {
+			/*
+			 * Mark gpio as compatible to simple-bus and override
+			 * its #size-cells and provide a default ranges property
+			 * so we can attach instances of our mtk_gpio_v2 driver
+			 * to it for now. Provide exactly the same resources to
+			 * the instances of mtk_gpio_v2.
+			 */
+			compatible = "simple-bus";
+			ranges = <0x0 0x600 0x100>;
+			#size-cells = <1>;
+
+			gpio0: bank@0 {
+				reg = <0x0 0x100>;
+				interrupts = <6>;
+			};
+
+			gpio1: bank@1 {
+				reg = <0x0 0x100>;
+				interrupts = <6>;
+			};
+
+			gpio2: bank@2 {
+				reg = <0x0 0x100>;
+				interrupts = <6>;
+			};
+		};
+	};
+
+	usbphy: usbphy@10120000 {
+		clocks = <&clkctrl 22 &clkctrl 25>;
+		clock-names = "host", "device";
+	};
+
+	pcie@10140000 {
+		/*
+		 * Our driver is different that OpenWRT's, so we need slightly
+		 * different values for the reg property
+		 */
+		reg = <0x10140000 0x10000>;
+
+		/*
+		 * Also, we need resets and clocks defined, so we can properly
+		 * initialize the PCIe
+		 */
+		resets = <&rstctrl 26>, <&rstctrl 27>;
+		clocks = <&clkctrl 26>, <&clkctrl 27>;
+	};
+};

sys/boot/fdt/dts/mips/fbsd-rt2880.dtsi

@@ -0,0 +1,33 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@300000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+};

sys/boot/fdt/dts/mips/fbsd-rt3050.dtsi

@@ -0,0 +1,41 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+
+	usbphy: usbphy {
+		compatible = "ralink,rt3050-usbphy";
+		resets = <&rstctrl 22>;
+		reset-names = "otg";
+		clocks = <&clkctrl 18>;
+		clock-names = "otg";
+	};
+};

sys/boot/fdt/dts/mips/fbsd-rt3352.dtsi

@@ -0,0 +1,38 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+
+	usbphy {
+		clocks = <&clkctrl 18 &clkctrl 20>;
+		clock-names = "host", "device";
+	};
+};

sys/boot/fdt/dts/mips/fbsd-rt3883.dtsi

@@ -0,0 +1,50 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+
+	usbphy: usbphy {
+		clocks = <&clkctrl 22 &clkctrl 25>;
+		clock-names = "host", "device";
+	};
+
+	pci@10140000 {
+		#address-cells = <3>;
+		#size-cells = <2>;
+		ranges = <
+			0x02000000 0 0x00000000 0x20000000 0 0x10000000
+			0x01000000 0 0x00000000 0x10160000 0 0x00010000
+		>;
+
+		interrupt-parent = <&cpuintc>;
+		interrupts = <4>;
+	};
+};

sys/boot/fdt/dts/mips/fbsd-rt5350.dtsi

@@ -0,0 +1,38 @@
+/* $FreeBSD$ */
+
+/ {
+
+	/*
+	 * FreeBSD's stdin and stdout, so we can have a console
+	 */
+	chosen {
+		stdin = &uartlite;
+		stdout = &uartlite;
+	};
+
+	/*
+	 * OpenWRT doesn't define a clock controller, but we currently need one
+	 */
+	clkctrl: cltctrl {
+		compatible = "ralink,rt2880-clock";
+		#clock-cells = <1>;
+	};
+
+	palmbus@10000000 {
+		/*
+		 * Make palmbus compatible to our simplebus
+		 */
+		compatible = "simple-bus";
+
+		/*
+		 * Reference uartlite@c00 as uartlite, so we can address it
+		 * within the chosen node above
+		 */
+		uartlite: uartlite@c00 {};
+	};
+
+	usbphy {
+		clocks = <&clkctrl 18>;
+		clock-names = "host";
+	};
+};