Commit 4729bef9 authored by David Lechner's avatar David Lechner Committed by Sekhar Nori
Browse files

ARM: dts: da850-lego-ev3: Add Bluetooth nodes 



This adds nodes for describing the Bluetooth chip and connections on
LEGO MINDSTORMS EV3 to da850-lego-ev3.dts.

Signed-off-by: default avatarDavid Lechner <david@lechnology.com>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent 097f0987

arch/arm/boot/dts/da850-lego-ev3.dts

+82 −0
Original line number Diff line number Diff line
@@ -173,6 +173,15 @@ battery { 
		rechargeable-gpios = <&gpio 136 GPIO_ACTIVE_LOW>;

	};



	bt_slow_clk: bt-clock {

		pinctrl-names = "default";

		pinctrl-0 = <&ecap2_pins>, <&bt_clock_bias>;

		compatible = "pwm-clock";

		#clock-cells = <0>;

		clock-frequency = <32768>;

		pwms = <&ecap2 0 30518 0>;

	};



	/* ARM local RAM */

	memory@ffff0000 {

		compatible = "syscon", "simple-mfd";
@@ -216,6 +225,20 @@ disable { 
			bias-disable;

		};

	};



	bt_clock_bias: bt-clock-bias-groups {

		disable {

			groups = "cp2";

			bias-disable;

		};

	};



	bt_pic_bias: bt-pic-bias-groups {

		disable {

			groups = "cp20";

			bias-disable;

		};

	};

};



/* Input port 1 */
@@ -225,6 +248,22 @@ &serial1 { 
	pinctrl-0 = <&serial1_rxtx_pins>;

};



&serial2 {

	pinctrl-names = "default";

	pinctrl-0 = <&serial2_rxtx_pins>, <&serial2_rtscts_pins>, <&bt_pic_bias>;

	status = "okay";



	bluetooth {

		compatible = "ti,cc2560";

		clocks = <&bt_slow_clk>;

		clock-names = "ext_clock";

		enable-gpios = <&gpio 73 GPIO_ACTIVE_HIGH>;

		max-speed = <2000000>;

		nvmem-cells = <&bdaddr>;

		nvmem-cell-names = "bd-address";

	};

};



&rtc0 {

	status = "okay";

};
@@ -243,6 +282,12 @@ eeprom@50 { 
		pagesize = <64>;

		read-only;

		reg = <0x50>;

		#address-cells = <1>;

		#size-cells = <1>;



		bdaddr: bdaddr@3f06 {

			reg = <0x3f06 0x06>;

		};

	};

};
@@ -327,6 +372,10 @@ display@0{ 
	};

};



&ecap2 {

	status = "okay";

};



&ehrpwm0 {

	status = "okay";

};
@@ -340,6 +389,39 @@ batt_volt_en { 
		gpios = <6 GPIO_ACTIVE_HIGH>;

		output-high;

	};



	/* Don't impede Bluetooth clock signal */

	bt_clock_en {

		gpio-hog;

		gpios = <5 GPIO_ACTIVE_HIGH>;

		input;

	};



	/*

	 * There is a PIC microcontroller for interfacing with an Apple MFi

	 * chip. This interferes with normal Bluetooth operation, so we need

	 * to make sure it is turned off. Note: The publicly available

	 * schematics from LEGO don't show that these pins are connected to

	 * anything, but they are present in the source code from LEGO.

	 */



	bt_pic_en {

		gpio-hog;

		gpios = <51 GPIO_ACTIVE_HIGH>;

		output-low;

	};



	bt_pic_rst {

		gpio-hog;

		gpios = <78 GPIO_ACTIVE_HIGH>;

		output-high;

	};



	bt_pic_cts {

		gpio-hog;

		gpios = <87 GPIO_ACTIVE_HIGH>;

		input;

	};

};



&usb_phy {