arm: dts: mt7623: add support for Bananapi R2 (BPI-R2) board

Add support for the Bananapi R2 (BPI-R2) development board from
BIPAI KEJI. Detailed hardware information for BPI-R2 which could be
found on http://www.banana-pi.org/r2.html

The patch added nodes into the SoC-level file mt7623.dtsi such as CPU OPP
table and thermal zone treating CPU as one of cooling devices and also
added nodes into board-level file mt7623n-bananapi-bpi-r2.dts such as
MediaTek GMAC, MT7530 Switch, the crypto engine, USB, IR, I2S, I2C, UART,
SPI, PWM, GPIO keys, GPIO LEDs and PMIC LEDs. As to the other missing
hardware and peripherals, they would be added and integrated continuously.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Documentation/devicetree/bindings/arm/mediatek.txt

@@ -49,6 +49,8 @@ Supported boards:
 - Reference  board for MT7623n with NAND:
     Required root node properties:
       - compatible = "mediatek,mt7623n-rfb-nand", "mediatek,mt7623";
+- Bananapi BPI-R2 board:
+      - compatible = "bananapi,bpi-r2", "mediatek,mt7623";
 - MTK mt8127 tablet moose EVB:
     Required root node properties:
       - compatible = "mediatek,mt8127-moose", "mediatek,mt8127";

arch/arm/boot/dts/Makefile

@@ -1050,6 +1050,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt6589-aquaris5.dtb \
 	mt6592-evb.dtb \
 	mt7623n-rfb-nand.dtb \
+	mt7623n-bananapi-bpi-r2.dtb \
 	mt8127-moose.dtb \
 	mt8135-evbp1.dtb
 dtb-$(CONFIG_ARCH_ZX) += zx296702-ad1.dtb

arch/arm/boot/dts/mt7623.dtsi

@@ -21,12 +21,58 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/phy/phy.h>
 #include <dt-bindings/reset/mt2701-resets.h>
+#include <dt-bindings/thermal/thermal.h>
 #include "skeleton64.dtsi"
 
 / {
 	compatible = "mediatek,mt7623";
 	interrupt-parent = <&sysirq>;
 
+	cpu_opp_table: opp_table {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-98000000 {
+			opp-hz = /bits/ 64 <98000000>;
+			opp-microvolt = <1050000>;
+		};
+
+		opp-198000000 {
+			opp-hz = /bits/ 64 <198000000>;
+			opp-microvolt = <1050000>;
+		};
+
+		opp-398000000 {
+			opp-hz = /bits/ 64 <398000000>;
+			opp-microvolt = <1050000>;
+		};
+
+		opp-598000000 {
+			opp-hz = /bits/ 64 <598000000>;
+			opp-microvolt = <1050000>;
+		};
+
+		opp-747500000 {
+			opp-hz = /bits/ 64 <747500000>;
+			opp-microvolt = <1050000>;
+		};
+
+		opp-1040000000 {
+			opp-hz = /bits/ 64 <1040000000>;
+			opp-microvolt = <1150000>;
+		};
+
+		opp-1196000000 {
+			opp-hz = /bits/ 64 <1196000000>;
+			opp-microvolt = <1200000>;
+		};
+
+		opp-1300000000 {
+			opp-hz = /bits/ 64 <1300000000>;
+			opp-microvolt = <1300000>;
+		};
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -36,21 +82,31 @@
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x0>;
+			clocks = <&infracfg CLK_INFRA_CPUSEL>,
+				 <&apmixedsys CLK_APMIXED_MAINPLL>;
+			clock-names = "cpu", "intermediate";
+			operating-points-v2 = <&cpu_opp_table>;
+			#cooling-cells = <2>;
+			cooling-min-level = <0>;
+			cooling-max-level = <7>;
 		};
 		cpu1: cpu@1 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x1>;
+			operating-points-v2 = <&cpu_opp_table>;
 		};
 		cpu2: cpu@2 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x2>;
+			operating-points-v2 = <&cpu_opp_table>;
 		};
 		cpu3: cpu@3 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a7";
 			reg = <0x3>;
+			operating-points-v2 = <&cpu_opp_table>;
 		};
 	};
 
@@ -74,6 +130,56 @@
 		clock-output-names = "clk26m";
 	};
 
+	thermal-zones {
+			cpu_thermal: cpu_thermal {
+				polling-delay-passive = <1000>;
+				polling-delay = <1000>;
+
+				thermal-sensors = <&thermal 0>;
+
+				trips {
+					cpu_passive: cpu_passive {
+						temperature = <47000>;
+						hysteresis = <2000>;
+						type = "passive";
+					};
+
+					cpu_active: cpu_active {
+						temperature = <67000>;
+						hysteresis = <2000>;
+						type = "active";
+					};
+
+					cpu_hot: cpu_hot {
+						temperature = <87000>;
+						hysteresis = <2000>;
+						type = "hot";
+					};
+
+					cpu_crit {
+						temperature = <107000>;
+						hysteresis = <2000>;
+						type = "critical";
+					};
+				};
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_passive>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+				map1 {
+					trip = <&cpu_active>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+				map2 {
+					trip = <&cpu_hot>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
+
 	timer {
 		compatible = "arm,armv7-timer";
 		interrupt-parent = <&gic>;
@@ -172,7 +278,7 @@
 		clock-names = "spi", "wrap";
 	};
 
-	cir: cir@0x10013000 {
+	cir: cir@10013000 {
 		compatible = "mediatek,mt7623-cir";
 		reg = <0 0x10013000 0 0x1000>;
 		interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_LOW>;
@@ -193,7 +299,7 @@
 	efuse: efuse@10206000 {
 		compatible = "mediatek,mt7623-efuse",
 			     "mediatek,mt8173-efuse";
-		reg	   = <0 0x10206000 0 0x1000>;
+		reg = <0 0x10206000 0 0x1000>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 		thermal_calibration_data: calib@424 {
@@ -561,7 +667,8 @@
 	};
 
 	u3phy1: usb-phy@1a1c4000 {
-		compatible = "mediatek,mt7623-u3phy", "mediatek,mt2701-u3phy";
+		compatible = "mediatek,mt7623-u3phy",
+			     "mediatek,mt2701-u3phy";
 		reg = <0 0x1a1c4000 0 0x0700>;
 		clocks = <&clk26m>;
 		clock-names = "u3phya_ref";
@@ -599,7 +706,8 @@
 	};
 
 	u3phy2: usb-phy@1a244000 {
-		compatible = "mediatek,mt7623-u3phy", "mediatek,mt2701-u3phy";
+		compatible = "mediatek,mt7623-u3phy",
+			     "mediatek,mt2701-u3phy";
 		reg = <0 0x1a244000 0 0x0700>;
 		clocks = <&clk26m>;
 		clock-names = "u3phya_ref";
@@ -639,7 +747,9 @@
 	};
 
 	eth: ethernet@1b100000 {
-		compatible = "mediatek,mt2701-eth", "syscon";
+		compatible = "mediatek,mt7623-eth",
+			     "mediatek,mt2701-eth",
+			     "syscon";
 		reg = <0 0x1b100000 0 0x20000>;
 		interrupts = <GIC_SPI 200 IRQ_TYPE_LEVEL_LOW>,
 			     <GIC_SPI 199 IRQ_TYPE_LEVEL_LOW>,