cape-bebopr-R2.dts

/*
 * Copyright (C) 2013 Bas Laarhoven
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * DT overlay for BeBoPr and BeagleBone (white)
 *
 * history:
 * 2013-08-05 SJL - Created from old 2191 overlay.
 *                  Limit compatibility to BeagleBone (White).
 *                  Use original (2-signal) BeBoPr enable scheme.
 *                  Removed non-functional io-enable sysfs interface.
 * 2013-08-11 SJL - Merged changes from cape-bebopr-ena-R2.dts
 */
/dts-v1/;
/plugin/;

/ {
	compatible = "aes,bebopr", "ti,beaglebone";

	/* identification */
	part-number = "cape-bebopr";
	version = "R2";

	exclusive-use =
	/* state the resources this cape uses */

	/* ------ IO POWER ------ */

		"P8.3",     /* gpio1.6     gpio38    old Enable  */
		"P8.5",     /* gpio1.2     gpio34    old Enablen */

    /* ------ PWM ------ */

		"P8.46",    /* pru1.r30.1     EHRPWM2B   J2_PWM0  */
		"P8.45",    /* pru1.r30.0     EHRPWM2A   J3_PWM1  */
		"P8.36",    /* gpio2.16       EHRPWM1A   J4_PWM2  */
		"ehrpwm1A",
		"ehrpwm2A",
		"ehrpwm2B",

	/* ------ STEPPERS ------ */

		"P8.41",    /* gpio2.10  #X_ENA */
		"P8.44",    /* gpio2.9   #X_DIR */
		"P8.43",    /* gpio2.8   #X_STP */
		"P8.40",    /* gpio2.13  #Y_ENA */
		"P8.39",    /* gpio2.12  #Y_DIR */
		"P8.42",    /* gpio2.11  #Y_STP */
		"P8.28",    /* gpio2.24  #Z_ENA */
		"P8.29",    /* gpio2.23  #Z_DIR */
		"P8.27",    /* gpio2.22  #Z_STP */
		"P8.20",    /* gpio1.31  #E_ENA */
		"P8.21",    /* gpio1.30  #E_DIR */
		"P8.30",    /* gpio2.25  #E_STP */
		"pru1",
		"pruss",

	/* ------ SENSORS ------ */

		"P8.31",    /* gpio0.10   #X_MIN */
		"P8.32",    /* gpio0.11   #X_MAX */
		"P8.35",    /* gpio0.8    #Y_MIN */
		"P8.33",    /* gpio0.9    #Y_MAX */
		"P8.38",    /* gpio2.15   #Z_MIN */
		"P8.37",    /* gpio2.14   #Z_MAX */

	/* ------ ADC ------ */

		"P9.40",    /* AIN1 */
		"P9.38",    /* AIN3 */
		"P9.36",    /* AIN5 */
		"tscadc",

	/* ------ LED ------ */

		"P8.25";    /* gpio1.0        LED     */



	/* ----------- IO ENABLE ------------ */

	fragment@0 {
		target = <&am33xx_pinmux>;
		__overlay__ {

			bebopr_io_enable_pins: pinmux_bebopr_io_enable_pins {
				pinctrl-single,pins = <
					0x018 0x07  /*  P8-3 GPIO1_6    gpmc_ad6.gpio1[6]      */
					0x008 0x07  /*  P8-5 GPIO1_2    gpmc_ad2.gpio1[2]      */
				>;
			};
		};
	};

	fragment@1 {
		target = <&ocp>;
		__overlay__ {

			bebopr_io_enables {
				compatible = "gpio-of-helper";
				status = "okay";
				pinctrl-names = "default";
				pinctrl-0 = <&bebopr_io_enable_pins>;

				io_enable {
					gpio-name = "bebopr:io_enable";
					gpio = <&gpio2 6 0>;
					output;
					init-high;
				};
				io_enable_n {
					gpio-name = "bebopr:io_enable_n";
					gpio = <&gpio2 2 0>;
					output;
					init-high;
				};
			};
		};
	};

	/* ----------- PWM ------------ */

	fragment@11 {
		target = <&epwmss1>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@12 {
		target = <&ehrpwm1>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@13 {
		target = <&epwmss2>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@14 {
		target = <&ehrpwm2>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@15 {
		target = <&am33xx_pinmux>;
		__overlay__ {

		// J2_PWM0
			P8_46_ehrpwm_pin: pinmux_P8_46_ehrpwm_pin {
				pinctrl-single,pins = <0x0a4  0x3>; /* P8_46 (ZCZ ball R2) | MODE 3 */
			};

			P8_46_gpio_pin: pinmux_P8_46_gpio_pin {
				pinctrl-single,pins = <0x0a4  0x7>; /* P8_46 (ZCZ ball R2) | MODE 7 */
			};

			P8_46_pruss_pin: pinmux_P8_46_pruss_pin {
				pinctrl-single,pins = <0x0a4  0x5>; /* P8_46 (ZCZ ball R2) | MODE 5 */
			};

		// J3_PWM1
			P8_45_ehrpwm_pin: pinmux_P8_45_ehrpwm_pin {
				pinctrl-single,pins = <0x0a0  0x3>; /* P8_45 (ZCZ ball R1) | MODE 3 */
			};

			P8_45_gpio_pin: pinmux_P8_45_gpio_pin {
				pinctrl-single,pins = <0x0a0  0x7>; /* P8_45 (ZCZ ball R1) | MODE 7 */
			};

			P8_45_pruss_pin: pinmux_P8_45_pruss_pin {
				pinctrl-single,pins = <0x0a0  0x5>; /* P8_45 (ZCZ ball R1) | MODE 5 */
			};

		// J4_PWM2
			P8_36_ehrpwm_pin: pinmux_P8_36_ehrpwm_pin {
				pinctrl-single,pins = <0x0c8  0x2>; /* P8_36 (ZCZ ball U3) | MODE 2 */
			};

			P8_36_gpio_pin: pinmux_P8_36_gpio_pin {
				pinctrl-single,pins = <0x0c8  0x7>; /* P8_36 (ZCZ ball U3) | MODE 7 */
			};
		};
	};

	fragment@16 {
		target = <&ocp>;
		__overlay__ {

			bebopr_pwm_J2_pinmux {
				compatible = "bone-pinmux-helper";
				status = "okay";

				pinctrl-names = "default", "gpio", "pruss";
				pinctrl-0 = <&P8_46_ehrpwm_pin>;
				pinctrl-1 = <&P8_46_gpio_pin>;
				pinctrl-2 = <&P8_46_pruss_pin>;
			};

			bebopr_pwm_J3_pinmux {
				compatible = "bone-pinmux-helper";
				status = "okay";

				pinctrl-names = "default", "gpio", "pruss";
				pinctrl-0 = <&P8_45_ehrpwm_pin>;
				pinctrl-1 = <&P8_45_gpio_pin>;
				pinctrl-2 = <&P8_45_pruss_pin>;
			};

			bebopr_pwm_J4_pinmux {
				compatible = "bone-pinmux-helper";
				status = "okay";

				pinctrl-names = "default", "gpio";
				pinctrl-0 = <&P8_36_ehrpwm_pin>;
				pinctrl-1 = <&P8_36_gpio_pin>;
			};

			bebopr_pwm_J2 {
				compatible	= "pwm_test";
				pwms		= <&ehrpwm2 1 10000000 0>;
				pwm-names	= "PWM0_J2_FAN";
				enabled		= <0>;
				duty		= <0>;
				status		= "okay";
			};

			bebopr_pwm_J3 {
				compatible	= "pwm_test";
				pwms		= <&ehrpwm2 0 10000000 0>;
				pwm-names	= "PWM1_J3_EXTR";
				enabled		= <0>;
				duty		= <0>;
				status		= "okay";
			};

			bebopr_pwm_J4 {
				compatible	= "pwm_test";
				pwms		= <&ehrpwm1 0 100000000 0>;
				pwm-names	= "PWM2_J4_BED";
				enabled		= <0>;
				duty		= <0>;
				status		= "okay";
			};
		};
	};

	/* ----------- STEPPERS ------------ */

	fragment@21 {
		target = <&am33xx_pinmux>;
		__overlay__ {

			bebopr_stepper_pins: pinmux_bebopr_stepper_pins {
				status = "okay";
				pinctrl-single,pins = <
					/* stepper outputs */
					0xb0 5  /* #X_ENA, pr1_pru1_pru_r30_4,  P8_41, gpio2.10, mode5 out */
					0xac 5  /* #X_DIR, pr1_pru1_pru_r30_3,  P8_44, gpio2.9,  mode5 out */
					0xa8 5  /* #X_STP, pr1_pru1_pru_r30_2,  P8_43, gpio2.8,  mode5 out */
					0xbc 5  /* #Y_ENA, pr1_pru1_pru_r30_7,  P8_40, gpio2.13, mode5 out */
					0xb8 5  /* #Y_DIR, pr1_pru1_pru_r30_6,  P8_39, gpio2.12, mode5 out */
					0xb4 5  /* #Y_STP, pr1_pru1_pru_r30_5,  P8_42, gpio2.11, mode5 out */
					0xe8 5  /* #Z_ENA, pr1_pru1_pru_r30_10, P8_28, gpio2.24, mode5 out */
					0xe4 5  /* #Z_DIR, pr1_pru1_pru_r30_9,  P8_29, gpio2.23, mode5 out */
					0xe0 5  /* #Z_STP, pr1_pru1_pru_r30_8,  P8_27, gpio2.22, mode5 out */
					0x84 5  /* #E_ENA, pr1_pru1_pru_r30_13, P8_20, gpio1.31, mode5 out */
					0x80 5  /* #E_DIR, pr1_pru1_pru_r30_12, P8_21, gpio1.30, mode5 out */
					0xec 5  /* #E_STP, pr1_pru1_pru_r30_11, P8_30, gpio2.25, mode5 out */
				>;
			};
		};  
	};

	fragment@22 {
		target = <&ocp>;
		__overlay__ {

			bebopr_steppers {
				compatible = "gpio-of-helper";
				status = "okay";
				pinctrl-names = "default";
				pinctrl-0 = <&bebopr_stepper_pins>;

				x_stp {
					gpio-name = "bebopr:x_stp";
					gpio = <&gpio3 8 0>;
					output;
					init-low;
				};
				x_dir {
					gpio-name = "bebopr:x_dir";
					gpio = <&gpio3 9 0>;
					output;
					init-low;
				};
				x_ena {
					gpio-name = "bebopr:x_ena";
					gpio = <&gpio3 10 0>;
					output;
					init-high;
				};

				y_stp {
					gpio-name = "bebopr:y_stp";
					gpio = <&gpio3 11 0>;
					output;
					init-low;
				};
				y_dir {
					gpio-name = "bebopr:y_dir";
					gpio = <&gpio3 12 0>;
					output;
					init-low;
				};
				y_ena {
					gpio-name = "bebopr:y_ena";
					gpio = <&gpio3 13 0>;
					output;
					init-high;
				};

				z_stp {
					gpio-name = "bebopr:z_stp";
					gpio = <&gpio3 22 0>;
					output;
					init-low;
				};
				z_dir {
					gpio-name = "bebopr:z_dir";
					gpio = <&gpio3 23 0>;
					output;
					init-low;
				};
				z_ena {
					gpio-name = "bebopr:z_ena";
					gpio = <&gpio3 24 0>;
					output;
					init-high;
				};

				e_stp {
					gpio-name = "bebopr:e_stp";
					gpio = <&gpio3 25 0>;
					output;
					init-low;
				};
				e_dir {
					gpio-name = "bebopr:e_dir";
					gpio = <&gpio2 30 0>;
					output;
					init-low;
				};
				e_ena {
					gpio-name = "bebopr:e_ena";
					gpio = <&gpio2 31 0>;
					output;
					init-high;
				};
			};
		};
	};

	fragment@23 {
		target = <&pruss>;
		__overlay__ {
			status = "okay";
		};
	};

	/* ----------- SENSORS ------------ */

	fragment@31 {
		target = <&am33xx_pinmux>;
		__overlay__ {

			bebopr_sensor_pins: pinmux_bebopr_sensor_pins {
				status = "okay";
				pinctrl-single,pins = <
					/* sensor inputs with pull-downs */
					0xd8 0x2f   /* #X_MIN, P8_31, gpio0.10, mode7 in */
					0xdc 0x2f   /* #X_MAX, P8_32, gpio0.11, mode7 in */
					0xd0 0x2f   /* #Y_MIN, P8_35, gpio0.8,  mode7 in */
					0xd4 0x2f   /* #Y_MAX, P8_33, gpio0.9 , mode7 in */
					0xc4 0x2f   /* #Z_MIN, P8_38, gpio2.15, mode7 in */
					0xc0 0x2f   /* #Z_MAX, P8_37, gpio2.14, mode7 in */
				>;
			};
		};
	};

	fragment@33 {
		target = <&ocp>;
		__overlay__ {

			bebopr_sensors {
				compatible = "gpio-of-helper";
				status = "okay";
				pinctrl-names = "default";
				pinctrl-0 = <&bebopr_sensor_pins>;

				x_min {
					gpio-name = "bebopr:x_min";
					gpio = <&gpio1 10 0>;
					input;
				};
				x_max {
					gpio-name = "bebopr:x_max";
					gpio = <&gpio1 11 0>;
					input;
				};
				y_min {
					gpio-name = "bebopr:y_min";
					gpio = <&gpio1 8 0>;
					input;
				};
				y_max {
					gpio-name = "bebopr:y_max";
					gpio = <&gpio1 9 0>;
					input;
				};
				z_min {
					gpio-name = "bebopr:z_min";
					gpio = <&gpio3 15 0>;
					input;
				};
				z_max {
					gpio-name = "bebopr:z_max";
					gpio = <&gpio3 14 0>;
					input;
				};
			};
		};
	};

	/* ----------- ADC ------------ */

        /* no pinmux needed */

	fragment@41 {
		target = <&ocp>;
		__overlay__ {

			#address-cells = <1>;
			#size-cells = <1>;

			tscadc {
				compatible = "ti,ti-tscadc";
				status = "okay";

				reg = <0x44e0d000 0x1000>;
				interrupt-parent = <&intc>;
				interrupts = <16>;
				ti,hwmods = "adc_tsc";
				adc {
					ti,adc-channels = <0 1 2 3 4 5 6 7>;
				};
			};

			bebopr_adc {
				compatible = "bone-iio-helper";
				status = "okay";
				/* scale to raw bit value */
				vsense-name  = "AIN0", "AIN1", "AIN2", "AIN3", "AIN4", "AIN5", "AIN7";
				vsense-scale = < 228     228     228     228     228     228     228>;
			};

		};
	};


	/* ----------- LED ------------ */

	fragment@51 {
		target = <&am33xx_pinmux>;
		__overlay__ {

 			bebopr_led_pins: pinmux_bebopr_led_pins {
				pinctrl-single,pins = <
					0x000 0x07    /* P8-25 GPIO1_0    gpmc_ad0 .gpio1[0]     */
				>;
			};
		};
	};


	fragment@52 {
		target = <&ocp>;
		__overlay__ {

			bebopr_leds {
				compatible = "gpio-leds";
				pinctrl-names = "default";
				pinctrl-0 = <&bebopr_led_pins>;

				status_led {
					label = "bebopr:status_led";
					gpios = <&gpio2 0 0>;
					linux,default-trigger = "heartbeat";
					default-state = "off";
				};
			};
		};
	};

	/* ----------- ADS1015 ------------ */

/*
	fragment@61 {
		target = <&i2c2>;
		__overlay__ {
			// needed to avoid gripping by DTC
			#address-cells = <1>;
			#size-cells = <0>;
			status = "okay";	// probably already set

			ads1015: ads1015@48 {

				compatible = "ti,ads1015";
				status = "okay";

		           	#address-cells = <1>;
				#size-cells = <0>;
				reg = <0x48>;

				hi_res = <1>;

				channel@1 {
			   	     	  reg = <4>;
				     	  ti,gain = <2>;
				     	  ti,datarate = <2>;
			   	};
				channel@2 {
			   	     	  reg = <5>;
				     	  ti,gain = <2>;
				     	  ti,datarate = <2>;
			   	};
				channel@3 {
			   	     	  reg = <6>;
				     	  ti,gain = <2>;
				     	  ti,datarate = <2>;
			   	};
				channel@4 {
			   	     	  reg = <0>;
				     	  ti,gain = <3>;
				     	  ti,datarate = <2>;
			   	};
	        	};
		};

	};
*/

};