arch/arm/dts/am335x-chilisom.dtsi

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2015 Jablotron s.r.o. -- https://www.jablotron.com/
 * Author: Rostislav Lisovy <lisovy@jablotron.cz>
 */
#include "am33xx.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>

/ {
	model = "Grinn AM335x ChiliSOM";
	compatible = "grinn,am335x-chilisom", "ti,am33xx";

	cpus {
		cpu@0 {
			cpu0-supply = <&dcdc2_reg>;
		};
	};

	memory@80000000 {
		device_type = "memory";
		reg = <0x80000000 0x20000000>; /* 512 MB */
	};
};

&am33xx_pinmux {
	pinctrl-names = "default";

	i2c0_pins: pinmux_i2c0_pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x988, PIN_INPUT_PULLUP | MUX_MODE0)	/* i2c0_sda.i2c0_sda */
			AM33XX_IOPAD(0x98c, PIN_INPUT_PULLUP | MUX_MODE0)	/* i2c0_scl.i2c0_scl */
		>;
	};

	nandflash_pins: nandflash_pins {
		pinctrl-single,pins = <
			AM33XX_IOPAD(0x800, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad0.gpmc_ad0 */
			AM33XX_IOPAD(0x804, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad1.gpmc_ad1 */
			AM33XX_IOPAD(0x808, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad2.gpmc_ad2 */
			AM33XX_IOPAD(0x80c, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad3.gpmc_ad3 */
			AM33XX_IOPAD(0x810, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad4.gpmc_ad4 */
			AM33XX_IOPAD(0x814, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad5.gpmc_ad5 */
			AM33XX_IOPAD(0x818, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad6.gpmc_ad6 */
			AM33XX_IOPAD(0x81c, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad7.gpmc_ad7 */

			AM33XX_IOPAD(0x870, PIN_INPUT_PULLUP | MUX_MODE0)	/* gpmc_wait0.gpmc_wait0 */
			AM33XX_IOPAD(0x87c, PIN_OUTPUT_PULLUP | MUX_MODE0)	/* gpmc_csn0.gpmc_csn0 */
			AM33XX_IOPAD(0x890, PIN_OUTPUT_PULLUP | MUX_MODE0)	/* gpmc_advn_ale.gpmc_advn_ale */
			AM33XX_IOPAD(0x894, PIN_OUTPUT_PULLUP | MUX_MODE0)	/* gpmc_oen_ren.gpmc_oen_ren */
			AM33XX_IOPAD(0x898, PIN_OUTPUT_PULLUP | MUX_MODE0)	/* gpmc_wen.gpmc_wen */
			AM33XX_IOPAD(0x89c, PIN_OUTPUT_PULLUP | MUX_MODE0)	/* gpmc_be0n_cle.gpmc_be0n_cle */
		>;
	};
};

&i2c0 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c0_pins>;

	status = "okay";
	clock-frequency = <400000>;

	tps: tps@24 {
		reg = <0x24>;
	};

};

/include/ "tps65217.dtsi"

&tps {
	regulators {
		dcdc1_reg: regulator@0 {
			regulator-name = "vdds_dpr";
			regulator-always-on;
		};

		dcdc2_reg: regulator@1 {
			/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
			regulator-name = "vdd_mpu";
			regulator-min-microvolt = <925000>;
			regulator-max-microvolt = <1325000>;
			regulator-boot-on;
			regulator-always-on;
		};

		dcdc3_reg: regulator@2 {
			/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
			regulator-name = "vdd_core";
			regulator-min-microvolt = <925000>;
			regulator-max-microvolt = <1150000>;
			regulator-boot-on;
			regulator-always-on;
		};

		ldo1_reg: regulator@3 {
			regulator-name = "vio,vrtc,vdds";
			regulator-boot-on;
			regulator-always-on;
		};

		ldo2_reg: regulator@4 {
			regulator-name = "vdd_3v3aux";
			regulator-boot-on;
			regulator-always-on;
		};

		ldo3_reg: regulator@5 {
			regulator-name = "vdd_1v8";
			regulator-boot-on;
			regulator-always-on;
		};

		ldo4_reg: regulator@6 {
			regulator-name = "vdd_3v3d";
			regulator-boot-on;
			regulator-always-on;
		};
	};
};

&rtc {
	system-power-controller;

	pinctrl-0 = <&ext_wakeup>;
	pinctrl-names = "default";

	ext_wakeup: ext-wakeup {
		pins = "ext_wakeup0";
		input-enable;
	};
};

/* NAND Flash */
&elm {
	status = "okay";
};

&gpmc {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&nandflash_pins>;
	ranges = <0 0 0x08000000 0x01000000>; /* CS0 0 @addr 0x08000000, size 0x01000000 */
	nand@0,0 {
		compatible = "ti,omap2-nand";
		reg = <0 0 4>;	/* CS0, offset 0, IO size 4 */
		interrupt-parent = <&gpmc>;
		interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */
			     <1 IRQ_TYPE_NONE>;	/* termcount */
		rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */
		ti,nand-ecc-opt = "bch8";
		ti,elm-id = <&elm>;
		nand-bus-width = <8>;
		gpmc,device-width = <1>;
		gpmc,sync-clk-ps = <0>;
		gpmc,cs-on-ns = <0>;
		gpmc,cs-rd-off-ns = <44>;
		gpmc,cs-wr-off-ns = <44>;
		gpmc,adv-on-ns = <6>;
		gpmc,adv-rd-off-ns = <34>;
		gpmc,adv-wr-off-ns = <44>;
		gpmc,we-on-ns = <0>;
		gpmc,we-off-ns = <40>;
		gpmc,oe-on-ns = <0>;
		gpmc,oe-off-ns = <54>;
		gpmc,access-ns = <64>;
		gpmc,rd-cycle-ns = <82>;
		gpmc,wr-cycle-ns = <82>;
		gpmc,bus-turnaround-ns = <0>;
		gpmc,cycle2cycle-delay-ns = <0>;
		gpmc,clk-activation-ns = <0>;
		gpmc,wr-access-ns = <40>;
		gpmc,wr-data-mux-bus-ns = <0>;
	};
};