1// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
  2/*
  3 * Broadcom BCM470X / BCM5301X ARM platform code.
  4 * DTS for Meraki MR32 / Codename: Espresso
  5 *
  6 * Copyright (C) 2018-2020 Christian Lamparter <chunkeey@gmail.com>
  7 */
  8
  9/dts-v1/;
 10
 11#include "bcm4708.dtsi"
 12#include "bcm5301x-nand-cs0-bch8.dtsi"
 13#include <dt-bindings/leds/common.h>
 14
 15/ {
 16	compatible = "meraki,mr32", "brcm,brcm53016", "brcm,bcm4708";
 17	model = "Meraki MR32";
 18
 19	chosen {
 20		bootargs = " console=ttyS0,115200n8 earlycon";
 21	};
 22
 23	memory {
 24		reg = <0x00000000 0x08000000>;
 25		device_type = "memory";
 26	};
 27
 28	aliases {
 29		serial1 = &uart2;
 30	};
 31
 32	leds {
 33		compatible = "gpio-leds";
 34
 35		sysled3 {
 36			function = LED_FUNCTION_FAULT;
 37			color = <LED_COLOR_ID_AMBER>;
 38			gpios = <&chipcommon 18 GPIO_ACTIVE_LOW>;
 39			panic-indicator;
 40		};
 41		sysled2 {
 42			function = LED_FUNCTION_INDICATOR;
 43			color = <LED_COLOR_ID_WHITE>;
 44			gpios = <&chipcommon 19 GPIO_ACTIVE_HIGH>;
 45		};
 46	};
 47
 48	keys {
 49		compatible = "gpio-keys";
 50		#address-cells = <1>;
 51		#size-cells = <0>;
 52
 53		restart {
 54			label = "Reset";
 55			linux,code = <KEY_RESTART>;
 56			gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>;
 57		};
 58	};
 59
 60	pwm-leds {
 61		compatible = "pwm-leds";
 62
 63		red {
 64			/* SYS-LED 1 - Tricolor */
 65			function = LED_FUNCTION_INDICATOR;
 66			color = <LED_COLOR_ID_RED>;
 67			pwms = <&pwm 0 50000 0>;
 68			max-brightness = <255>;
 69		};
 70
 71		green {
 72			/* SYS-LED 1 - Tricolor */
 73			function = LED_FUNCTION_POWER;
 74			color = <LED_COLOR_ID_GREEN>;
 75			pwms = <&pwm 1 50000 0>;
 76			max-brightness = <255>;
 77		};
 78
 79		blue {
 80			/* SYS-LED 1 - Tricolor */
 81			function = LED_FUNCTION_INDICATOR;
 82			color = <LED_COLOR_ID_BLUE>;
 83			pwms = <&pwm 2 50000 0>;
 84			max-brightness = <255>;
 85		};
 86	};
 87
 88	i2c {
 89		/*
 90		 * The platform provided I2C does not budge.
 91		 * This is a replacement until I can figure
 92		 * out what are the missing bits...
 93		 */
 94
 95		compatible = "i2c-gpio";
 96		sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
 97		scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
 98		i2c-gpio,delay-us = <10>; /* close to 100 kHz */
 99		#address-cells = <1>;
100		#size-cells = <0>;
101
102		current_sense: ina219@45 {
103			compatible = "ti,ina219";
104			reg = <0x45>;
105			shunt-resistor = <60000>; /* = 60 mOhms */
106		};
107
108		eeprom: eeprom@50 {
109			compatible = "atmel,24c64";
110			reg = <0x50>;
111			pagesize = <32>;
112			read-only;
113		};
114	};
115};
116
117&uart0 {
118	clock-frequency = <62500000>;
119	/delete-property/ clocks;
120};
121
122&uart1 {
123	status = "disabled";
124};
125
126&uart2 {
127	status = "okay";
128	/*
129	 * bluetooth-le {
130	 *	compatible = "brcm,bcm20732";
131	 *	enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>;
132	 *};
133	 */
134};
135
136&gmac1 {
137	status = "disabled";
138};
139&gmac2 {
140	status = "disabled";
141};
142&gmac3 {
143	status = "disabled";
144};
145
146&pwm {
147	status = "okay";
148	pinctrl-names = "default";
149	pinctrl-0 = <&pinmux_pwm>;
150};
151
152&nandcs {
153	nand-ecc-algo = "hw";
154
155	partitions {
156		/*
157		 * The partition autodetection does not work for this device.
158		 * It will only detect the "nvram" partition with an incorrect size.
159		 *	[    1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0
160		 *	[    1.727962] Creating 1 MTD partitions on "brcmnand.0":
161		 *	[    1.733117] 0x000000400000-0x000008000000 : "nvram"
162		 */
163
164		compatible = "fixed-partitions";
165		#address-cells = <0x1>;
166		#size-cells = <0x1>;
167
168		partition0@0 {
169			label = "u-boot";
170			reg = <0x0 0x100000>;
171			read-only;
172		};
173
174		partition1@100000 {
175			label = "bootkernel1";
176			reg = <0x100000 0x300000>;
177			read-only;
178		};
179
180		partition2@400000 {
181			label = "nvram";
182			reg = <0x400000 0x100000>;
183			read-only;
184		};
185
186		partition3@500000 {
187			label = "bootkernel2";
188			reg = <0x500000 0x300000>;
189			read-only;
190		};
191
192		partition4@800000 {
193			label = "ubi";
194			reg = <0x800000 0x7780000>;
195		};
196	};
197};