/*
 * This is the Device Tree overlay for the IBB Home Automation Cape
 * for BeagleBone, BeagleBone Black and Beaglebone Green.
 *
 * Copyright (c) 2015 - Ingenieurbuero Budde
 * Copyright (c) 2026 - Vincent Schweiger <vincent.schweiger@getcom.de>
 *
 * 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.
 */

/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/am33xx.h>

/*
 * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
 */
&{/chosen} {
	overlays {
		cape-bone-ibb-00A0.kernel = __TIMESTAMP__;
	};
};

/*
 * Free up the pins used by the cape from the pinmux helpers.
 */
&ocp {
	P9_24_pinmux { status = "disabled"; };	/* uart1_txd.uart1_txd */
	P9_26_pinmux { status = "disabled"; };	/* uart1_rxd.uart1_rxd */
	P9_21_pinmux { status = "disabled"; }; /* spi0_d0.uart2_txd */
	P9_22_pinmux { status = "disabled"; }; /* spi0_sclk.uart2_rxd */
	P9_11_pinmux { status = "disabled"; }; /* gpmc_wait0.uart4_rxd_mux2 */
	P9_13_pinmux { status = "disabled"; }; /* gpmc_wpn.uart4_txd_mux2 */
	P9_15_pinmux { status = "disabled"; }; /* gpmc_a0.gpio1_16 */
};

&am33xx_pinmux {
	bb_uart1_pins: pinmux_uart1_pins {
		pinctrl-single,pins = <
			AM33XX_PADCONF(AM335X_PIN_UART1_TXD, PIN_OUTPUT_PULLDOWN, MUX_MODE0)	/* P9_24: uart1_txd.uart1_txd */
			AM33XX_PADCONF(AM335X_PIN_UART1_RXD, PIN_INPUT_PULLUP, MUX_MODE0)	/* P9_26: uart1_rxd.uart1_rxd */
		>;
	};

	bb_uart2_pins: pinmux_uart2_pins {
		pinctrl-single,pins = <
			AM33XX_PADCONF(AM335X_PIN_SPI0_D0, PIN_OUTPUT_PULLDOWN, MUX_MODE1)	/* P9_21: spi0_d0.uart2_txd */
			AM33XX_PADCONF(AM335X_PIN_SPI0_SCLK, PIN_INPUT_PULLUP, MUX_MODE1)	/* P9_22: spi0_sclk.uart2_rxd */
		>;
	};

	bb_uart4_pins: pinmux_uart4_pins {
		pinctrl-single,pins = <
			AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE6) /* P9_11: gpmc_wait0.uart4_rxd_mux2 */
			AM33XX_PADCONF(AM335X_PIN_GPMC_WPN, PIN_INPUT_PULLDOWN, MUX_MODE6) /* P9_13: gpmc_wait0.uart4_txd_mux2 */
		>;
	};

	bb_gpio1_16_pins: pinmux_gpio1_16_pins {
		pinctrl-single,pins = <
			AM33XX_PADCONF(AM335X_PIN_GPMC_A0, PIN_INPUT, MUX_MODE7) /* P9_15: gpmc_a0.gpio1_16 */
		>;
	};
};

&uart1 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&bb_uart1_pins>;
};

&uart2 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&bb_uart2_pins>;
};

&uart4 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&bb_uart4_pins>;
};

&i2c2 {
	status = "okay";
	clock-frequency = <400000>;

	/* shut up DTC warnings */
	#address-cells = <1>;
	#size-cells = <0>;

	rtc@68 {
		compatible = "maxim,ds3231";
		reg = <0x68>;
	};

	 /* PCA9546 I2C multiplexer */
	i2cmux@70 {
		compatible = "nxp,pca9546";
		#address-cells = <1>;
		#size-cells = <0>;
		reg = <0x70>;

		im0: bus@0 {
			compatible = "nxp,pca954x-bus";
			reg = <0>;
		};
		im1: bus@1 {
			compatible = "nxp,pca954x-bus";
			reg = <1>;
		};
		im2: bus@2 {
			compatible = "nxp,pca954x-bus";
			reg = <2>;
		};
		im3: bus@3 {
			compatible = "nxp,pca954x-bus";
			reg = <3>;
		};
	};
};

&{/} {
    gpio_keys {
        compatible = "gpio-keys";
        pinctrl-names = "default";
        pinctrl-0 = <&bb_gpio1_16_pins>;

	/* avoid stupid warning */
	#address-cells = <1>;
	#size-celss = <0>;

        rtc_mfp@1 {
            label = "rtc_mfp";
            gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
            linux,code = <143>; /* System Wake Up */
            gpio-key,wakeup;
        };
    };

    aliases {
        i2c3 = &im0;
        i2c4 = &im1;
        i2c5 = &im2;
        i2c6 = &im3;
    };
};