board: at91sam9261ek: Update to support DT and DM

Add the dts files to support deivce tree, update the configuration
files to support the device tree and driver model. The peripheral
clock and pins configuration are handled by the clock and the pinctrl
drivers respectively.

Enable the early debug UART to debug problems when an ICE or other
debug mechanism is not available.

Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

3 files changed, 297 insertions, 67 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 708709382c..6f7db82fce 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -384,6 +384,8 @@ dtb-$(CONFIG_SOC_KEYSTONE) += keystone-k2hk-evm.dtb \
 	keystone-k2g-generic.dtb \
 	keystone-k2g-ice.dtb
 
+dtb-$(CONFIG_TARGET_AT91SAM9261EK) += at91sam9261ek.dtb
+
 dtb-$(CONFIG_TARGET_AT91SAM9263EK) += at91sam9263ek.dtb
 
 dtb-$(CONFIG_TARGET_AT91SAM9RLEK) += at91sam9rlek.dtb
diff --git a/arch/arm/dts/at91sam9261.dtsi b/arch/arm/dts/at91sam9261.dtsi
index 5e09de4eb9..69c2d6e416 100644
--- a/arch/arm/dts/at91sam9261.dtsi
+++ b/arch/arm/dts/at91sam9261.dtsi
@@ -30,6 +30,7 @@
 		ssc0 = &ssc0;
 		ssc1 = &ssc1;
 		ssc2 = &ssc2;
+		spi0 = &spi0;
 	};
 
 	cpus {
@@ -70,6 +71,7 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges;
+		u-boot,dm-pre-reloc;
 
 		usb0: ohci@00500000 {
 			compatible = "atmel,at91rm9200-ohci", "usb-ohci";
@@ -112,6 +114,7 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;
+			u-boot,dm-pre-reloc;
 
 			tcb0: timer@fffa0000 {
 				compatible = "atmel,at91rm9200-tcb";
@@ -286,20 +289,61 @@
 				status = "disabled";
 			};
 
+			pioA: gpio@fffff400 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff400 0x200>;
+				interrupts = <2 IRQ_TYPE_LEVEL_HIGH 1>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				clocks = <&pioA_clk>;
+				u-boot,dm-pre-reloc;
+			};
+
+			pioB: gpio@fffff600 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff600 0x200>;
+				interrupts = <3 IRQ_TYPE_LEVEL_HIGH 1>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				clocks = <&pioB_clk>;
+				u-boot,dm-pre-reloc;
+			};
+
+			pioC: gpio@fffff800 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff800 0x200>;
+				interrupts = <4 IRQ_TYPE_LEVEL_HIGH 1>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				clocks = <&pioC_clk>;
+				u-boot,dm-pre-reloc;
+			};
+
 			pinctrl@fffff400 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 				compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
 				ranges = <0xfffff400 0xfffff400 0x600>;
-
+				reg = <0xfffff400 0x200		/* pioA */
+				       0xfffff600 0x200		/* pioB */
+				       0xfffff800 0x200		/* pioC */
+				      >;
 				atmel,mux-mask =
 				      /*    A         B     */
 				      <0xffffffff 0xfffffff7>,  /* pioA */
 				      <0xffffffff 0xfffffff4>,  /* pioB */
 				      <0xffffffff 0xffffff07>;  /* pioC */
+				u-boot,dm-pre-reloc;
 
 				/* shared pinctrl settings */
 				dbgu {
+					u-boot,dm-pre-reloc;
 					pinctrl_dbgu: dbgu-0 {
 						atmel,pins =
 							<AT91_PIOA 9  AT91_PERIPH_A AT91_PINCTRL_NONE>,
@@ -532,39 +576,6 @@
 							<AT91_PIOB 28 AT91_PERIPH_B AT91_PINCTRL_NONE>;
 					};
 				};
-
-				pioA: gpio@fffff400 {
-					compatible = "atmel,at91rm9200-gpio";
-					reg = <0xfffff400 0x200>;
-					interrupts = <2 IRQ_TYPE_LEVEL_HIGH 1>;
-					#gpio-cells = <2>;
-					gpio-controller;
-					interrupt-controller;
-					#interrupt-cells = <2>;
-					clocks = <&pioA_clk>;
-				};
-
-				pioB: gpio@fffff600 {
-					compatible = "atmel,at91rm9200-gpio";
-					reg = <0xfffff600 0x200>;
-					interrupts = <3 IRQ_TYPE_LEVEL_HIGH 1>;
-					#gpio-cells = <2>;
-					gpio-controller;
-					interrupt-controller;
-					#interrupt-cells = <2>;
-					clocks = <&pioB_clk>;
-				};
-
-				pioC: gpio@fffff800 {
-					compatible = "atmel,at91rm9200-gpio";
-					reg = <0xfffff800 0x200>;
-					interrupts = <4 IRQ_TYPE_LEVEL_HIGH 1>;
-					#gpio-cells = <2>;
-					gpio-controller;
-					interrupt-controller;
-					#interrupt-cells = <2>;
-					clocks = <&pioC_clk>;
-				};
 			};
 
 			pmc: pmc@fffffc00 {
@@ -575,6 +586,7 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 				#interrupt-cells = <1>;
+				u-boot,dm-pre-reloc;
 
 				main_osc: main_osc {
 					compatible = "atmel,at91rm9200-clk-main-osc";
@@ -589,7 +601,7 @@
 					clocks = <&main_osc>;
 				};
 
-				plla: pllack {
+				plla: pllack@0 {
 					compatible = "atmel,at91rm9200-clk-pll";
 					#clock-cells = <0>;
 					interrupts-extended = <&pmc AT91_PMC_LOCKA>;
@@ -601,7 +613,7 @@
 								<190000000 240000000 2 1>;
 				};
 
-				pllb: pllbck {
+				pllb: pllbck@1 {
 					compatible = "atmel,at91rm9200-clk-pll";
 					#clock-cells = <0>;
 					interrupts-extended = <&pmc AT91_PMC_LOCKB>;
@@ -619,6 +631,7 @@
 					clocks = <&slow_xtal>, <&main>, <&plla>, <&pllb>;
 					atmel,clk-output-range = <0 94000000>;
 					atmel,clk-divisors = <1 2 4 0>;
+					u-boot,dm-pre-reloc;
 				};
 
 				usb: usbck {
@@ -635,25 +648,25 @@
 					interrupt-parent = <&pmc>;
 					clocks = <&slow_xtal>, <&main>, <&plla>, <&pllb>;
 
-					prog0: prog0 {
+					prog0: progi@0 {
 						#clock-cells = <0>;
 						reg = <0>;
 						interrupts = <AT91_PMC_PCKRDY(0)>;
 					};
 
-					prog1: prog1 {
+					prog1: prog@1 {
 						#clock-cells = <0>;
 						reg = <1>;
 						interrupts = <AT91_PMC_PCKRDY(1)>;
 					};
 
-					prog2: prog2 {
+					prog2: prog@2 {
 						#clock-cells = <0>;
 						reg = <2>;
 						interrupts = <AT91_PMC_PCKRDY(2)>;
 					};
 
-					prog3: prog3 {
+					prog3: prog@3 {
 						#clock-cells = <0>;
 						reg = <3>;
 						interrupts = <AT91_PMC_PCKRDY(3)>;
@@ -665,49 +678,49 @@
 					#address-cells = <1>;
 					#size-cells = <0>;
 
-					uhpck: uhpck {
+					uhpck: uhpck@6 {
 						#clock-cells = <0>;
 						reg = <6>;
 						clocks = <&usb>;
 					};
 
-					udpck: udpck {
+					udpck: udpck@7 {
 						#clock-cells = <0>;
 						reg = <7>;
 						clocks = <&usb>;
 					};
 
-					pck0: pck0 {
+					pck0: pck@8 {
 						#clock-cells = <0>;
 						reg = <8>;
 						clocks = <&prog0>;
 					};
 
-					pck1: pck1 {
+					pck1: pck@9 {
 						#clock-cells = <0>;
 						reg = <9>;
 						clocks = <&prog1>;
 					};
 
-					pck2: pck2 {
+					pck2: pck@10 {
 						#clock-cells = <0>;
 						reg = <10>;
 						clocks = <&prog2>;
 					};
 
-					pck3: pck3 {
+					pck3: pck@11 {
 						#clock-cells = <0>;
 						reg = <11>;
 						clocks = <&prog3>;
 					};
 
-					hclk0: hclk0 {
+					hclk0: hclk@16 {
 						#clock-cells = <0>;
 						reg = <16>;
 						clocks = <&mck>;
 					};
 
-					hclk1: hclk1 {
+					hclk1: hclk@17 {
 						#clock-cells = <0>;
 						reg = <17>;
 						clocks = <&mck>;
@@ -719,98 +732,102 @@
 					#address-cells = <1>;
 					#size-cells = <0>;
 					clocks = <&mck>;
+					u-boot,dm-pre-reloc;
 
-					pioA_clk: pioA_clk {
+					pioA_clk: pioA_clk@2 {
 						#clock-cells = <0>;
 						reg = <2>;
+						u-boot,dm-pre-reloc;
 					};
 
-					pioB_clk: pioB_clk {
+					pioB_clk: pioB_clk@3 {
 						#clock-cells = <0>;
 						reg = <3>;
+						u-boot,dm-pre-reloc;
 					};
 
-					pioC_clk: pioC_clk {
+					pioC_clk: pioC_clk@4 {
 						#clock-cells = <0>;
 						reg = <4>;
+						u-boot,dm-pre-reloc;
 					};
 
-					usart0_clk: usart0_clk {
+					usart0_clk: usart0_clk@6 {
 						#clock-cells = <0>;
 						reg = <6>;
 					};
 
-					usart1_clk: usart1_clk {
+					usart1_clk: usart1_clk@7 {
 						#clock-cells = <0>;
 						reg = <7>;
 					};
 
-					usart2_clk: usart2_clk {
+					usart2_clk: usart2_clk@8 {
 						#clock-cells = <0>;
 						reg = <8>;
 					};
 
-					mci0_clk: mci0_clk {
+					mci0_clk: mci0_clk@9 {
 						#clock-cells = <0>;
 						reg = <9>;
 					};
 
-					udc_clk: udc_clk {
+					udc_clk: udc_clk@10 {
 						#clock-cells = <0>;
 						reg = <10>;
 					};
 
-					twi0_clk: twi0_clk {
+					twi0_clk: twi0_clk@11 {
 						reg = <11>;
 						#clock-cells = <0>;
 					};
 
-					spi0_clk: spi0_clk {
+					spi0_clk: spi0_clk@12 {
 						#clock-cells = <0>;
 						reg = <12>;
 					};
 
-					spi1_clk: spi1_clk {
+					spi1_clk: spi1_clk@13 {
 						#clock-cells = <0>;
 						reg = <13>;
 					};
 
-					ssc0_clk: ssc0_clk {
+					ssc0_clk: ssc0_clk@14 {
 						#clock-cells = <0>;
 						reg = <14>;
 					};
 
-					ssc1_clk: ssc1_clk {
+					ssc1_clk: ssc1_clk@15 {
 						#clock-cells = <0>;
 						reg = <15>;
 					};
 
-					ssc2_clk: ssc2_clk {
+					ssc2_clk: ssc2_clk@16 {
 						#clock-cells = <0>;
 						reg = <16>;
 					};
 
-					tc0_clk: tc0_clk {
+					tc0_clk: tc0_clk@17 {
 						#clock-cells = <0>;
 						reg = <17>;
 					};
 
-					tc1_clk: tc1_clk {
+					tc1_clk: tc1_clk@18 {
 						#clock-cells = <0>;
 						reg = <18>;
 					};
 
-					tc2_clk: tc2_clk {
+					tc2_clk: tc2_clk@19 {
 						#clock-cells = <0>;
 						reg = <19>;
 					};
 
-					ohci_clk: ohci_clk {
+					ohci_clk: ohci_clk@20 {
 						#clock-cells = <0>;
 						reg = <20>;
 					};
 
-					lcd_clk: lcd_clk {
+					lcd_clk: lcd_clk@21 {
 						#clock-cells = <0>;
 						reg = <21>;
 					};
diff --git a/arch/arm/dts/at91sam9261ek.dts b/arch/arm/dts/at91sam9261ek.dts
new file mode 100644
index 0000000000..55bd51f07f
--- /dev/null
+++ b/arch/arm/dts/at91sam9261ek.dts
@@ -0,0 +1,211 @@
+/*
+ * at91sam9261ek.dts - Device Tree file for Atmel at91sam9261 reference board
+ *
+ *  Copyright (C) 2013 Jean-Jacques Hiblot <jjhiblot@traphandler.com>
+ *
+ * Licensed under GPLv2 only.
+ */
+/dts-v1/;
+#include "at91sam9261.dtsi"
+
+/ {
+	model = "Atmel at91sam9261ek";
+	compatible = "atmel,at91sam9261ek", "atmel,at91sam9261", "atmel,at91sam9";
+
+	chosen {
+		bootargs = "rootfstype=ubifs ubi.mtd=5 root=ubi0:rootfs rw";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		reg = <0x20000000 0x4000000>;
+	};
+
+	clocks {
+		slow_xtal {
+			clock-frequency = <32768>;
+		};
+
+		main_xtal {
+			clock-frequency = <18432000>;
+		};
+	};
+
+	ahb {
+		usb0: ohci@00500000 {
+			status = "okay";
+		};
+
+		fb0: fb@0x00600000 {
+			display = <&display0>;
+			atmel,power-control-gpio = <&pioA 12 GPIO_ACTIVE_LOW>;
+			status = "okay";
+
+			display0: display {
+				bits-per-pixel = <16>;
+				atmel,lcdcon-backlight;
+				atmel,dmacon = <0x1>;
+				atmel,lcdcon2 = <0x80008002>;
+				atmel,guard-time = <1>;
+				atmel,lcd-wiring-mode = "BRG";
+
+				display-timings {
+					native-mode = <&timing0>;
+					timing0: timing0 {
+						clock-frequency = <4965000>;
+						hactive = <240>;
+						vactive = <320>;
+						hback-porch = <1>;
+						hfront-porch = <33>;
+						vback-porch = <1>;
+						vfront-porch = <0>;
+						hsync-len = <5>;
+						vsync-len = <1>;
+						hsync-active = <1>;
+						vsync-active = <1>;
+					};
+				};
+			};
+		};
+
+		nand0: nand@40000000 {
+			nand-bus-width = <8>;
+			nand-ecc-mode = "soft";
+			nand-on-flash-bbt;
+			status = "okay";
+
+			at91bootstrap@0 {
+				label = "at91bootstrap";
+				reg = <0x0 0x40000>;
+			};
+
+			bootloader@40000 {
+				label = "bootloader";
+				reg = <0x40000 0x80000>;
+			};
+
+			bootloaderenv@c0000 {
+				label = "bootloader env";
+				reg = <0xc0000 0xc0000>;
+			};
+
+			dtb@180000 {
+				label = "device tree";
+				reg = <0x180000 0x80000>;
+			};
+
+			kernel@200000 {
+				label = "kernel";
+				reg = <0x200000 0x600000>;
+			};
+
+			rootfs@800000 {
+				label = "rootfs";
+				reg = <0x800000 0x0f800000>;
+			};
+		};
+
+		apb {
+			usb1: gadget@fffa4000 {
+				atmel,vbus-gpio = <&pioB 29 GPIO_ACTIVE_HIGH>;
+				status = "okay";
+			};
+
+			spi0: spi@fffc8000 {
+				cs-gpios = <&pioA 3 0>, <0>, <&pioA 28 0>, <0>;
+				status = "okay";
+
+				mtd_dataflash@0 {
+					compatible = "atmel,at45", "atmel,dataflash";
+					reg = <0>;
+					spi-max-frequency = <15000000>;
+				};
+
+				tsc2046@0 {
+					reg = <2>;
+					compatible = "ti,ads7843";
+					interrupts-extended = <&pioC 2 IRQ_TYPE_EDGE_BOTH>;
+					spi-max-frequency = <3000000>;
+					pendown-gpio = <&pioC 2 GPIO_ACTIVE_HIGH>;
+
+					ti,x-min = /bits/ 16 <150>;
+					ti,x-max = /bits/ 16 <3830>;
+					ti,y-min = /bits/ 16 <190>;
+					ti,y-max = /bits/ 16 <3830>;
+					ti,vref-delay-usecs = /bits/ 16 <450>;
+					ti,x-plate-ohms = /bits/ 16 <450>;
+					ti,y-plate-ohms = /bits/ 16 <250>;
+					ti,pressure-max = /bits/ 16 <15000>;
+					ti,debounce-rep = /bits/ 16 <0>;
+					ti,debounce-tol = /bits/ 16 <65535>;
+					ti,debounce-max = /bits/ 16 <1>;
+
+					wakeup-source;
+				};
+			};
+
+			dbgu: serial@fffff200 {
+				status = "okay";
+			};
+
+			watchdog@fffffd40 {
+				status = "okay";
+			};
+
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		ds8 {
+			label = "ds8";
+			gpios = <&pioA 13 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "none";
+		};
+
+		ds7 {
+			label = "ds7";
+			gpios = <&pioA 14 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "nand-disk";
+		};
+
+		ds1 {
+			label = "ds1";
+			gpios = <&pioA 23 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		button_0 {
+			label = "button_0";
+			gpios = <&pioA 27 GPIO_ACTIVE_LOW>;
+			linux,code = <256>;
+			wakeup-source;
+		};
+
+		button_1 {
+			label = "button_1";
+			gpios = <&pioA 26 GPIO_ACTIVE_LOW>;
+			linux,code = <257>;
+			wakeup-source;
+		};
+
+		button_2 {
+			label = "button_2";
+			gpios = <&pioA 25 GPIO_ACTIVE_LOW>;
+			linux,code = <258>;
+			wakeup-source;
+		};
+
+		button_3 {
+			label = "button_3";
+			gpios = <&pioA 24 GPIO_ACTIVE_LOW>;
+			linux,code = <259>;
+			wakeup-source;
+		};
+	};
+};