ARM: dts: at91: add Exegin Q5xR5 board

Add Exegin Q5xR5. The base device tree is from OpenWrt tree and with
the addition of this patch there will be no need to maintain it
separatelly in OpenWrt.

[osk: original author of patch in OpenWrt]
[claudiu.beznea: use "&<label> {" syntax, sorted nodes in alphabetical
 order, adapted flash to new support in kernel 5.14, use proper
 compatibles according to kernel 5.14, use macros instead of
 hardcoded numbers for pinctrl phandles and for all pinctrl references,
 add pinctrl-names, pinctrl-X where necessaray]

Signed-off-by: Owen Kirby <osk@exegin.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210816064416.1630674-8-claudiu.beznea@microchip.com

arch/arm/boot/dts/Makefile

@@ -41,6 +41,7 @@ dtb-$(CONFIG_SOC_AT91SAM9) += \
 	at91-kizboxmini-base.dtb \
 	at91-kizboxmini-mb.dtb \
 	at91-kizboxmini-rd.dtb \
+	at91-q5xr5.dtb \
 	at91-smartkiz.dtb \
 	at91-wb45n.dtb \
 	at91sam9g15ek.dtb \

arch/arm/boot/dts/at91-q5xr5.dts

@@ -0,0 +1,199 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Device Tree file for Exegin Q5xR5 board
+ *
+ * Copyright (C) 2014 Owen Kirby <osk@exegin.com>
+ */
+
+/dts-v1/;
+#include "at91sam9g20.dtsi"
+
+/ {
+	model = "Exegin Q5x (rev5)";
+	compatible = "exegin,q5xr5", "atmel,at91sam9g20", "atmel,at91sam9";
+
+	chosen {
+		bootargs = "console=ttyS0,115200 rootfstype=squashfs,jffs2";
+	};
+
+	memory {
+		reg = <0x20000000 0x0>;
+	};
+
+	clocks {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		main_clock: clock@0 {
+			compatible = "atmel,osc", "fixed-clock";
+			clock-frequency = <18432000>;
+		};
+
+		slow_xtal {
+			clock-frequency = <32768>;
+		};
+
+		main_xtal {
+			clock-frequency = <18432000>;
+		};
+	};
+};
+
+&dbgu {
+	status = "okay";
+};
+
+&ebi {
+	status = "okay";
+
+	flash: flash@0 {
+		compatible = "cfi-flash";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0x0 0x1000000 0x800000>;
+		bank-width = <2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			kernel@0 {
+				label = "kernel";
+				reg = <0x0 0x200000>;
+			};
+
+			rootfs@200000 {
+				label = "rootfs";
+				reg = <0x200000 0x600000>;
+			};
+		};
+	};
+};
+
+&macb0 {
+	phy-mode = "mii";
+	status = "okay";
+};
+
+&pinctrl {
+	board {
+		pinctrl_pck0_as_mck: pck0_as_mck {
+			atmel,pins = <AT91_PIOC 1 AT91_PERIPH_B AT91_PINCTRL_NONE>;
+		};
+	};
+
+	spi0 {
+		pinctrl_spi0: spi0-0 {
+			atmel,pins =
+				<AT91_PIOA 0 AT91_PERIPH_A AT91_PINCTRL_NONE
+				 AT91_PIOA 1 AT91_PERIPH_A AT91_PINCTRL_NONE
+				 AT91_PIOA 2 AT91_PERIPH_A AT91_PINCTRL_NONE>;
+		};
+
+		pinctrl_spi0_npcs0: spi0_npcs0 {
+			atmel,pins = <AT91_PIOA 3 AT91_PERIPH_A AT91_PINCTRL_NONE>;
+		};
+
+		pinctrl_spi0_npcs1: spi0_npcs1 {
+			atmel,pins = <AT91_PIOC 11 AT91_PERIPH_B AT91_PINCTRL_NONE>;
+		};
+	};
+
+	spi1 {
+		pinctrl_spi1: spi1-0 {
+			atmel,pins =
+				<AT91_PIOB 0 AT91_PERIPH_A AT91_PINCTRL_NONE
+				 AT91_PIOB 1 AT91_PERIPH_A AT91_PINCTRL_NONE
+				 AT91_PIOB 2 AT91_PERIPH_A AT91_PINCTRL_NONE>;
+		};
+
+		pinctrl_spi1_npcs0: spi1_npcs0 {
+			atmel,pins = <AT91_PIOB 3 AT91_PERIPH_A AT91_PINCTRL_NONE>;
+		};
+
+		pinctrl_spi1_npcs1: spi1_npcs1 {
+			atmel,pins = <AT91_PIOC 5 AT91_PERIPH_B AT91_PINCTRL_NONE>;
+		};
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_spi0 &pinctrl_spi0_npcs0 &pinctrl_spi0_npcs1>;
+	cs-gpios = <&pioA 3 GPIO_ACTIVE_HIGH>, <&pioC 11 GPIO_ACTIVE_LOW>, <0>, <0>;
+	status = "okay";
+
+	m25p80@0 {
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <20000000>;
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		at91boot@0 {
+			label = "at91boot";
+			reg = <0x0 0x4000>;
+		};
+
+		uenv@4000 {
+			label = "uboot-env";
+			reg = <0x4000 0x4000>;
+		};
+
+		uboot@8000 {
+			label = "uboot";
+			reg = <0x8000 0x3E000>;
+		};
+	};
+
+	spidev@1 {
+		compatible = "spidev";
+		spi-max-frequency = <2000000>;
+		reg = <1>;
+	};
+};
+
+&spi1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_spi1 &pinctrl_spi1_npcs0 &pinctrl_spi1_npcs1>;
+	cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>, <&pioC 5 GPIO_ACTIVE_LOW>, <0>, <0>;
+	status = "okay";
+
+	spidev@0 {
+		compatible = "spidev";
+		spi-max-frequency = <2000000>;
+		reg = <0>;
+	};
+
+	spidev@1 {
+		compatible = "spidev";
+		spi-max-frequency = <2000000>;
+		reg = <1>;
+	};
+};
+
+&usart0 {
+	pinctrl-0 =
+		<&pinctrl_usart0
+		 &pinctrl_usart0_rts
+		 &pinctrl_usart0_cts
+		 &pinctrl_usart0_dtr_dsr
+		 &pinctrl_usart0_dcd
+		 &pinctrl_usart0_ri>;
+	status = "okay";
+};
+
+&usb0 {
+	num-ports = <2>;
+	status = "okay";
+};
+
+&usb1 {
+	status = "okay";
+};
+
+&watchdog {
+	status = "okay";
+};