ARM: dts: add support for Laird WB50N cpu module and DVK

This adds support for Lairds CPU module, featuring Atheros wifi, CSR
Bluetooth and, Atmel SAMA5D3 CPU.
https://www.lairdtech.com/products/wb50nbt-wi-fi-bluetooth-module

Signed-off-by: Ben Whitten <ben.whitten@lairdtech.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

3 files changed, 311 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 8544fd0b398d..f39aa108e102 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -52,6 +52,7 @@ dtb-$(CONFIG_SOC_SAM_V7) += \
 	at91-sama5d2_xplained.dtb \
 	at91-sama5d3_xplained.dtb \
 	at91-tse850-3.dtb \
+	at91-wb50n.dtb \
 	sama5d31ek.dtb \
 	sama5d33ek.dtb \
 	sama5d34ek.dtb \
diff --git a/arch/arm/boot/dts/at91-wb50n.dts b/arch/arm/boot/dts/at91-wb50n.dts
new file mode 100644
index 000000000000..8cecc7051a86
--- /dev/null
+++ b/arch/arm/boot/dts/at91-wb50n.dts
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * at91-wb50n.dts - Device Tree file for wb50n evaluation board
+ *
+ *  Copyright (C) 2018 Laird
+ *
+ */
+
+/dts-v1/;
+#include "at91-wb50n.dtsi"
+
+/ {
+	model = "Laird Workgroup Bridge 50N - Atmel SAMA5D";
+	compatible = "laird,wb50n", "atmel,sama5d31", "atmel,sama5d3", "atmel,sama5";
+
+	gpio_keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		btn0@10 {
+			reg = <10>;
+			label = "BTNESC";
+			linux,code = <1>; /* ESC button */
+			gpios = <&pioA 10 GPIO_ACTIVE_LOW>;
+			gpio-key,wakeup = <1>;
+		};
+
+		irqbtn@31 {
+			reg = <31>;
+			label = "IRQBTN";
+			linux,code = <99>; /* SysReq button */
+			gpios = <&pioE 31 GPIO_ACTIVE_LOW>;
+			gpio-key,wakeup = <1>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led0 {
+			label = "wb50n:blue:led0";
+			gpios = <&pioA 12 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		led1 {
+			label = "wb50n:green:led1";
+			gpios = <&pioA 24 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		led2 {
+			label = "wb50n:red:led2";
+			gpios = <&pioA 26 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+};
+
+&watchdog {
+	status = "okay";
+};
+
+&mmc0 {
+	status = "okay";
+};
+
+&macb1 {
+	status = "okay";
+};
+
+&dbgu {
+	status = "okay";
+};
+
+/* On BB40 this port is labeled UART1 */
+&usart0 {
+	status = "okay";
+};
+
+/* On BB40 this port is labeled UART0 */
+&usart1 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+};
+
+&spi1 {
+	status = "okay";
+
+	spidev@0 {
+		compatible = "spidev";
+		reg = <0>;
+		spi-max-frequency = <8000000>;
+	};
+};
+
+&usb0 {
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+};
+
+&usb2 {
+	status = "okay";
+};
+
diff --git a/arch/arm/boot/dts/at91-wb50n.dtsi b/arch/arm/boot/dts/at91-wb50n.dtsi
new file mode 100644
index 000000000000..85692c8ef2b1
--- /dev/null
+++ b/arch/arm/boot/dts/at91-wb50n.dtsi
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * at91-wb50n.dtsi - Device Tree include file for wb50n cpu module
+ *
+ *  Copyright (C) 2018 Laird
+ *
+ */
+
+#include "sama5d31.dtsi"
+
+/ {
+	model = "Laird Workgroup Bridge 50N - Atmel SAMA5D";
+	compatible = "laird,wb50n", "atmel,sama5d31", "atmel,sama5d3", "atmel,sama5";
+
+	chosen {
+		bootargs = "ubi.mtd=6 root=ubi0:rootfs rootfstype=ubifs rw";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		reg = <0x20000000 0x4000000>;
+	};
+};
+
+&pinctrl {
+	board {
+		pinctrl_mmc0_cd: mmc0_cd {
+			atmel,pins = <AT91_PIOC 26 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>; /* PC26 GPIO with pullup deglitch */
+		};
+
+		pinctrl_usba_vbus: usba_vbus {
+			atmel,pins = <AT91_PIOB 13 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>; /* PB13 GPIO with deglitch */
+		};
+	};
+};
+
+&slow_xtal {
+	clock-frequency = <32768>;
+};
+
+&main_xtal {
+	clock-frequency = <12000000>;
+};
+
+&slow_osc {
+	atmel,osc-bypass;
+};
+
+&usart1_clk {
+	atmel,clk-output-range = <0 132000000>;
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_cd>;
+	cd-gpios = <&pioC 26 GPIO_ACTIVE_LOW>;
+	slot@0 {
+		reg = <0>;
+		bus-width = <4>;
+	};
+};
+
+&mmc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_mmc1_clk_cmd_dat0 &pinctrl_mmc1_dat1_3>;
+	status = "okay";
+	atheros@0 {
+		compatible = "atheros,ath6kl";
+		atheros,board-id = "SD32";
+		reg = <0>;
+		bus-width = <4>;
+	};
+};
+
+&macb1 {
+	phy-mode = "rmii";
+};
+
+&dbgu {
+	dmas = <0>, <0>;	/*  Do not use DMA for dbgu */
+};
+
+/* On BB40 this port is labeled UART1 */
+&usart0 {
+	atmel,use-dma-rx;
+	atmel,use-dma-tx;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usart0 &pinctrl_usart0_rts_cts>;
+};
+
+/* On BB40 this port is labeled UART0 */
+&usart1 {
+	atmel,use-dma-rx;
+	atmel,use-dma-tx;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usart1 &pinctrl_usart1_rts_cts>;
+	dtr-gpios = <&pioD 13 GPIO_ACTIVE_LOW>;
+	dsr-gpios = <&pioD 11 GPIO_ACTIVE_LOW>;
+	dcd-gpios = <&pioD 7 GPIO_ACTIVE_LOW>;
+	rng-gpios = <&pioD 8 GPIO_ACTIVE_LOW>;
+};
+
+/* USART3 is direct-connect to the Bluetooth UART on the radio SIP */
+&usart3 {
+	atmel,use-dma-rx;
+	atmel,use-dma-tx;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usart3 &pinctrl_usart3_rts_cts>;
+	status = "okay";
+};
+
+&spi1 {
+	cs-gpios = <&pioC 25 0>, <0>, <0>, <0>;
+};
+
+&ebi {
+	pinctrl-0 = <&pinctrl_ebi_nand_addr>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&nand_controller {
+	status = "okay";
+
+	nand: nand@3 {
+		reg = <0x3 0x0 0x2>;
+		atmel,rb = <0>;
+		nand-bus-width = <8>;
+		nand-ecc-mode = "hw";
+		nand-ecc-strength = <8>;
+		nand-ecc-step-size = <512>;
+		nand-on-flash-bbt;
+		label = "atmel_nand";
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			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 = "u-boot-env";
+				reg = <0xc0000 0x20000>;
+			};
+
+			kernel-a@e0000 {
+				label = "kernel-a";
+				reg = <0xe0000 0x500000>;
+			};
+
+			kernel-b@5e0000 {
+				label = "kernel-b";
+				reg = <0x5e0000 0x500000>;
+			};
+
+			rootfs-a@ae0000 {
+				label = "rootfs-a";
+				reg = <0xae0000 0x3000000>;
+			};
+
+			rootfs-b@3ae0000 {
+				label = "rootfs-b";
+				reg = <0x3ae0000 0x3000000>;
+			};
+
+			user@6ae0000 {
+				label = "user";
+				reg = <0x6ae0000 0x14e0000>;
+			};
+		};
+	};
+};
+
+&usb0 {
+	atmel,vbus-gpio = <&pioB 13 GPIO_ACTIVE_LOW>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usba_vbus>;
+};
+
+&usb1 {
+	num-ports = <3>;
+	atmel,vbus-gpio = <&pioA 2 GPIO_ACTIVE_LOW>;
+	atmel,oc-gpio = <&pioA 4 GPIO_ACTIVE_LOW>;
+};