ARM: dts: add DT for lan966 SoC and 2-port board pcb8291

This patch adds basic DT for Microchip lan966x SoC and associated board
pcb8291(2-port EVB). Adds peripherals required to allow booting: Interrupt
Controller, Clock, Generic ARMv7 Timers, Synopsys Timer, Flexcoms, GPIOs.
Also adds other peripherals like crypto(AES/SHA), DMA, Watchdog Timer, TRNG
and MCAN0.

Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
Reviewed-by: Michael Walle <michael@walle.cc>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20220221080858.14233-1-kavyasree.kotagiri@microchip.com

1 files changed, 64 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/lan966x-pcb8291.dts b/arch/arm/boot/dts/lan966x-pcb8291.dts
new file mode 100644
index 000000000000..3281af90ac6d
--- /dev/null
+++ b/arch/arm/boot/dts/lan966x-pcb8291.dts
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * lan966x_pcb8291.dts - Device Tree file for PCB8291
+ */
+/dts-v1/;
+#include "lan966x.dtsi"
+
+/ {
+	model = "Microchip EVB - LAN9662";
+	compatible = "microchip,lan9662-pcb8291", "microchip,lan9662", "microchip,lan966";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	aliases {
+		serial0 = &usart3;
+	};
+};
+
+&gpio {
+	fc_shrd7_pins: fc_shrd7-pins {
+		pins = "GPIO_49";
+		function = "fc_shrd7";
+	};
+
+	fc_shrd8_pins: fc_shrd8-pins {
+		pins = "GPIO_54";
+		function = "fc_shrd8";
+	};
+
+	fc3_b_pins: fcb3-spi-pins {
+		/* SCK, RXD, TXD */
+		pins = "GPIO_51", "GPIO_52", "GPIO_53";
+		function = "fc3_b";
+	};
+
+	can0_b_pins:  can0_b_pins {
+		/* RX, TX */
+		pins = "GPIO_35", "GPIO_36";
+		function = "can0_b";
+	};
+};
+
+&can0 {
+	pinctrl-0 = <&can0_b_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&flx3 {
+	atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
+	status = "okay";
+
+	usart3: serial@200 {
+		pinctrl-0 = <&fc3_b_pins>, <&fc_shrd7_pins>, <&fc_shrd8_pins>;
+		pinctrl-names = "default";
+		status = "okay";
+	};
+};
+
+&watchdog {
+	status = "okay";
+};