at91: add support for the WB45N module from Laird

This module from Laird includes the following:
  - CPU Atmel SoC ARM926EJS
  - Wifi AR6003
  - Bluetooth CSR8510
  - RAM 64MB LPDDR
  - FLASH 128MB

The flash is a dual image layout, kernel a/b, rootfs a/b, and a user
partition.

Signed-off-by: Ben Whitten <[email protected]>

target/linux/at91/files/arch/arm/boot/dts/wb45n.dts

@@ -0,0 +1,220 @@
+/*
+ * wb45n.dts - Device Tree file for WB45NBT board
+ *
+ *  Copyright (C) 2015 Laird
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+#include "at91sam9g25.dtsi"
+
+/ {
+	model = "Laird Workgroup Bridge 45N - Atmel AT91SAM (dt)";
+	compatible = "laird,wb45n", "laird,wbxx", "atmel,at91sam9x5", "atmel,at91sam9";
+
+	chosen {
+		bootargs = "console=ttyS0,115200 root=/dev/mtdblock1 rw rootfstype=ubifs ubi.mtd=1 root=ubi0:rootfs";
+	};
+
+	memory {
+		reg = <0x20000000 0x4000000>;
+	};
+
+	clocks {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		main_clock: clock@0 {
+			compatible = "atmel,osc", "fixed-clock";
+			clock-frequency = <12000000>;
+		};
+
+		slow_xtal {
+			clock-frequency = <32768>;
+		};
+
+		main_xtal {
+			clock-frequency = <12000000>;
+		};
+	};
+
+	ahb {
+		apb {
+
+			rstc@fffffe00 {
+				compatible = "atmel,sama5d3-rstc";
+			};
+
+			pinctrl@fffff400 {
+				nand {
+					pinctrl_nand: nand-0 {
+						atmel,pins =
+							<AT91_PIOD 0 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PD0 periph A Read Enable */
+							 AT91_PIOD 1 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PD1 periph A Write Enable */
+							 AT91_PIOD 2 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PD2 periph A Address Latch Enable */
+							 AT91_PIOD 3 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PD3 periph A Command Latch Enable */
+							 AT91_PIOD 4 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP	/* PD4 gpio Chip Enable pin pull_up */
+							 AT91_PIOD 5 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP>;  /* PD5 gpio RDY/BUSY pin pull_up */
+					};
+				};
+
+				usb2 {
+					pinctrl_board_usb2: usb2-board {
+						atmel,pins =
+							<AT91_PIOB 11 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;		/* PB11 gpio vbus sense, deglitch */
+					};
+				};
+			};
+
+			dbgu: serial@fffff200 {
+				status = "okay";
+			};
+
+			usart0: serial@f801c000 {
+				status = "okay";
+			};
+
+			usart3: serial@f8028000 {
+				status = "okay";
+			};
+
+			spi0: spi@f0000000 {
+				status = "okay";
+				cs-gpios = <&pioA 14 0>, <&pioA 7 0>, <0>, <0>;
+			};
+
+			mmc0: mmc@f0008000 {
+				pinctrl-0 = <
+					&pinctrl_mmc0_slot0_clk_cmd_dat0
+					&pinctrl_mmc0_slot0_dat1_3>;
+				status = "okay";
+				/delete-property/dmas;
+				/delete-property/dma-names;
+				slot@0 {
+					reg = <0>;
+					bus-width = <4>;
+				};
+			};
+
+			macb0: ethernet@f802c000 {
+				phy-mode = "rmii";
+				status = "okay";
+			};
+
+			usb2: gadget@f803c000 {
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_board_usb2>;
+				atmel,vbus-gpio = <&pioB 11 GPIO_ACTIVE_HIGH>;
+				status = "okay";
+			};
+
+			i2c1: i2c@f8014000 {
+				status = "okay";
+			};
+
+			watchdog@fffffe40 {
+				status = "okay";
+			};
+
+			shdwc@fffffe10 {
+				atmel,wakeup-mode = "low";
+			};
+
+			rtc@fffffeb0 {
+				status = "okay";
+			};
+		};
+
+		usb0: ohci@00600000 {
+			status = "okay";
+			num-ports = <2>;
+			atmel,vbus-gpio = <
+					   &pioB 12 GPIO_ACTIVE_HIGH
+					   &pioA 31 GPIO_ACTIVE_HIGH
+					  >;
+			atmel,oc-gpio = <&pioB 13 GPIO_ACTIVE_LOW>;
+		};
+
+		usb1: ehci@00700000 {
+			status = "okay";
+		};
+
+		nand0: nand@40000000 {
+			nand-bus-width = <8>;
+			nand-ecc-mode = "hw";
+			atmel,has-pmecc;	/* Enable PMECC */
+			atmel,pmecc-cap = <4>;
+			atmel,pmecc-sector-size = <512>;
+			nand-on-flash-bbt;
+			status = "okay";
+
+			at91bootstrap@0 {
+				label = "at91bs";
+				reg = <0x0 0x20000>;
+			};
+
+			uboot@20000 {
+				label = "u-boot";
+				reg = <0x20000 0x80000>;
+			};
+
+			ubootenv@a0000 {
+				label = "u-boot-env";
+				reg = <0xa0000 0x20000>;
+			};
+
+			ubootenv@c0000 {
+				label = "redund-env";
+				reg = <0xc0000 0x20000>;
+			};
+
+			kernel-a@e0000 {
+				label = "kernel-a";
+				reg = <0xe0000 0x280000>;
+			};
+
+			kernel-b@360000 {
+				label = "kernel-b";
+				reg = <0x360000 0x280000>;
+			};
+
+			rootfs-a@5e0000 {
+				label = "rootfs-a";
+				reg = <0x5e0000 0x2600000>;
+			};
+
+			rootfs-b@2be0000 {
+				label = "rootfs-b";
+				reg = <0x2be0000 0x2600000>;
+			};
+
+			user@51e0000 {
+				label = "user";
+				reg = <0x51e0000 0x2dc0000>;
+			};
+
+			logs@7fa0000 {
+				label = "logs";
+				reg = <0x7fa0000 0x60000>;
+			};
+		};
+	};
+
+	atheros {
+		compatible = "atheros,ath6kl";
+		atheros,board-id = "SD32";
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		irqbtn@pb18 {
+			label = "IRQBTN";
+			linux,code = <99>;
+			gpios = <&pioB 18 GPIO_ACTIVE_LOW>;
+			gpio-key,wakeup = <1>;
+		};
+	};
+};

target/linux/at91/image/Makefile

@@ -51,6 +51,12 @@ define Device/evaluation-dtb
   IMAGE/dtb := install-dtb
 endef
 
+define Device/evaluation-fit
+  $(Device/evaluation)
+  KERNEL_SUFFIX := -fit-uImage.itb
+  KERNEL := kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb
+endef
+
 define Device/production
   UBINIZE_OPTS := -E 5
   IMAGES := factory.bin

target/linux/at91/image/legacy.mk

@@ -116,3 +116,18 @@ define Device/at91-q5xr5
   KERNEL_SIZE := 2048k
 endef
 TARGET_DEVICES += at91-q5xr5
+
+define Device/wb45n
+  $(Device/evaluation-fit)
+  DEVICE_TITLE := Laird WB45N
+  DEVICE_PACKAGES := \
+	kmod-mmc-at91 kmod-ath6kl-sdio ath6k-firmware \
+	kmod-usb-storage kmod-fs-vfat kmod-fs-msdos \
+	kmod-leds-gpio
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  SUBPAGESIZE := 2048
+  MKUBIFS_OPTS := -m $$(PAGESIZE) -e 124KiB -c 955
+endef
+TARGET_DEVICES += wb45n
+

target/linux/at91/patches-4.4/102-ARM-at91-build-dtb-for-wb45n.patch

@@ -0,0 +1,12 @@
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -40,7 +40,8 @@ dtb-$(CONFIG_SOC_SAM_V4_V5) += \
+ 	at91sam9g25ek.dtb \
+ 	at91sam9g35ek.dtb \
+ 	at91sam9x25ek.dtb \
+-	at91sam9x35ek.dtb
++	at91sam9x35ek.dtb \
++	wb45n.dtb
+ dtb-$(CONFIG_SOC_SAM_V7) += \
+ 	at91-kizbox2.dtb \
+ 	at91-sama5d2_xplained.dtb \