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: Dong Aisheng <[e-mail]>
Signed-off-by: Joakim Zhang <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

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

···
 		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";
···
 		dailink_master: simple-audio-card,codec {
 			sound-dai = <&codec>;
 			clocks = <&clks IMX6UL_CLK_SAI2>;
+		};
+	};
+
+	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>;
 		};
 	};
 
···
 			clock-names = "rmii-ref";
 		};
 	};
+};
+
+&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 {
···
 			MX6UL_PAD_CSI_DATA06__SIM2_PORT1_SVEN		0xb808
 			MX6UL_PAD_CSI_DATA07__SIM2_PORT1_TRXD		0xb809
 			MX6UL_PAD_CSI_DATA02__GPIO4_IO23		0x3008
+		>;
+	};
+
+	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
 		>;
 	};
 

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

···
 
 /delete-node/ &fec1;
 /delete-node/ &fec2;
+/delete-node/ &can1;
+/delete-node/ &can2;
 /delete-node/ &lcdif;
 /delete-node/ &tsc;
 

arch/arm/boot/dts/imx6ulz.dtsi

···
 };
 
 /delete-node/ &adc1;
-/delete-node/ &can1;
-/delete-node/ &can2;
 /delete-node/ &ecspi3;
 /delete-node/ &ecspi4;
 /delete-node/ &epit2;