ARM: dts: imx6ul: add flexcan support

Add flexcan support for i.MX6UL board. Change the place of CAN node delete
due to i.MX6ULZ include i.MX6UL dts but not support flexcan.
Signed-off-by: NDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: NJoakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ul-14x14-evk.dtsi

@@ -30,6 +30,14 @@
 		enable-active-high;
 	};
 
+	reg_can_3v3: regulator-can-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "can-3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpios = <&gpio_spi 3 GPIO_ACTIVE_LOW>;
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "mx6ul-wm8960";
@@ -64,6 +72,28 @@
 		};
 	};
 
+	spi4 {
+		compatible = "spi-gpio";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_spi4>;
+		status = "okay";
+		gpio-sck = <&gpio5 11 0>;
+		gpio-mosi = <&gpio5 10 0>;
+		cs-gpios = <&gpio5 7 0>;
+		num-chipselects = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpio_spi: gpio@0 {
+			compatible = "fairchild,74hc595";
+			gpio-controller;
+			#gpio-cells = <2>;
+			reg = <0>;
+			registers-number = <1>;
+			spi-max-frequency = <100000>;
+		};
+	};
+
 	panel {
 		compatible = "innolux,at043tn24";
 		backlight = <&backlight_display>;
@@ -130,6 +160,20 @@
 	};
 };
 
+&can1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan1>;
+	xceiver-supply = <&reg_can_3v3>;
+	status = "okay";
+};
+
+&can2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexcan2>;
+	xceiver-supply = <&reg_can_3v3>;
+	status = "okay";
+};
+
 &i2c1 {
 	clock-frequency = <100000>;
 	pinctrl-names = "default";
@@ -415,6 +459,15 @@
 		>;
 	};
 
+	pinctrl_spi4: spi4grp {
+		fsl,pins = <
+			MX6UL_PAD_BOOT_MODE0__GPIO5_IO10	0x70a1
+			MX6UL_PAD_BOOT_MODE1__GPIO5_IO11	0x70a1
+			MX6UL_PAD_SNVS_TAMPER7__GPIO5_IO07	0x70a1
+			MX6UL_PAD_SNVS_TAMPER8__GPIO5_IO08	0x80000000
+		>;
+	};
+
 	pinctrl_tsc: tscgrp {
 		fsl,pins = <
 			MX6UL_PAD_GPIO1_IO01__GPIO1_IO01		0xb0

arch/arm/boot/dts/imx6ulz-14x14-evk.dts

@@ -9,6 +9,8 @@
 
 /delete-node/ &fec1;
 /delete-node/ &fec2;
+/delete-node/ &can1;
+/delete-node/ &can2;
 /delete-node/ &lcdif;
 /delete-node/ &tsc;
 

arch/arm/boot/dts/imx6ulz.dtsi

@@ -20,8 +20,6 @@
 };
 
 /delete-node/ &adc1;
-/delete-node/ &can1;
-/delete-node/ &can2;
 /delete-node/ &ecspi3;
 /delete-node/ &ecspi4;
 /delete-node/ &epit2;