arm: zynq: Add support for Xilinx zc770 xm012 dc3 board

zc770 is based board which is extended by FMC/DC cards for SoC
validation. FMCs/DCs are supposed to cover all SoC configurations.
FMC/DC contains can, 2x i2c, nor flash, spi and uart.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/arm/xilinx.txt

@@ -14,6 +14,7 @@ Additional compatible strings:
 - Xilinx internal board zc770 with different FMC cards
   "xlnx,zynq-zc770-xm010"
   "xlnx,zynq-zc770-xm011"
+  "xlnx,zynq-zc770-xm012"
 
 ---------------------------------------------------------------
 

arch/arm/boot/dts/Makefile

@@ -1069,6 +1069,7 @@ dtb-$(CONFIG_ARCH_ZYNQ) += \
 	zynq-zc706.dtb \
 	zynq-zc770-xm010.dtb \
 	zynq-zc770-xm011.dtb \
+	zynq-zc770-xm012.dtb \
 	zynq-zed.dtb \
 	zynq-zybo.dtb
 dtb-$(CONFIG_MACH_ARMADA_370) += \

arch/arm/boot/dts/zynq-zc770-xm012.dts

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Xilinx ZC770 XM012 board DTS
+ *
+ * Copyright (C) 2013-2018 Xilinx, Inc.
+ */
+/dts-v1/;
+#include "zynq-7000.dtsi"
+
+/ {
+	compatible = "xlnx,zynq-zc770-xm012", "xlnx,zynq-7000";
+	model = "Xilinx Zynq";
+
+	aliases {
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		serial0 = &uart1;
+		spi0 = &spi1;
+	};
+
+	chosen {
+		bootargs = "";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x40000000>;
+	};
+};
+
+&can1 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+	clock-frequency = <400000>;
+
+	eeprom0: eeprom@52 {
+		compatible = "atmel,24c02";
+		reg = <0x52>;
+	};
+};
+
+&i2c1 {
+	status = "okay";
+	clock-frequency = <400000>;
+
+	eeprom1: eeprom@52 {
+		compatible = "atmel,24c02";
+		reg = <0x52>;
+	};
+};
+
+&spi1 {
+	status = "okay";
+	num-cs = <4>;
+	is-decoded-cs = <0>;
+};
+
+&uart1 {
+	status = "okay";
+};