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,bcm53016", "brcm,bcm4708";
 17	model = "Meraki MR32";
 18
 19	chosen {
 20		bootargs = " console=ttyS0,115200n8 earlycon";
 21	};
 22
 23	memory@0 {
 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
 51		button-restart {
 52			label = "Reset";
 53			linux,code = <KEY_RESTART>;
 54			gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>;
 55		};
 56	};
 57
 58	pwm-leds {
 59		compatible = "pwm-leds";
 60
 61		led-0 {
 62			/* SYS-LED 1 - Tricolor */
 63			function = LED_FUNCTION_INDICATOR;
 64			color = <LED_COLOR_ID_RED>;
 65			pwms = <&pwm 0 50000 0>;
 66			max-brightness = <255>;
 67		};
 68
 69		led-1 {
 70			/* SYS-LED 1 - Tricolor */
 71			function = LED_FUNCTION_POWER;
 72			color = <LED_COLOR_ID_GREEN>;
 73			pwms = <&pwm 1 50000 0>;
 74			max-brightness = <255>;
 75		};
 76
 77		led-2 {
 78			/* SYS-LED 1 - Tricolor */
 79			function = LED_FUNCTION_INDICATOR;
 80			color = <LED_COLOR_ID_BLUE>;
 81			pwms = <&pwm 2 50000 0>;
 82			max-brightness = <255>;
 83		};
 84	};
 85};
 86
 87&uart0 {
 88	clock-frequency = <62500000>;
 89	/delete-property/ clocks;
 90};
 91
 92&uart1 {
 93	status = "disabled";
 94};
 95
 96&uart2 {
 97	status = "okay";
 98	/*
 99	 * bluetooth-le {
100	 *	compatible = "brcm,bcm20732";
101	 *	enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>;
102	 *};
103	 */
104};
105
106&gmac0 {
107	nvmem-cell-names = "mac-address";
108	nvmem-cells = <&mac_address>;
109};
110
111&gmac1 {
112	status = "disabled";
113};
114&gmac2 {
115	status = "disabled";
116};
117&gmac3 {
118	status = "disabled";
119};
120
121&pwm {
122	status = "okay";
123	pinctrl-names = "default";
124	pinctrl-0 = <&pinmux_pwm>;
125};
126
127&nandcs {
128	nand-ecc-algo = "hw";
129
130	partitions {
131		/*
132		 * The partition autodetection does not work for this device.
133		 * It will only detect the "nvram" partition with an incorrect size.
134		 *	[    1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0
135		 *	[    1.727962] Creating 1 MTD partitions on "brcmnand.0":
136		 *	[    1.733117] 0x000000400000-0x000008000000 : "nvram"
137		 */
138
139		compatible = "fixed-partitions";
140		#address-cells = <0x1>;
141		#size-cells = <0x1>;
142
143		partition0@0 {
144			label = "u-boot";
145			reg = <0x0 0x100000>;
146			read-only;
147		};
148
149		partition1@100000 {
150			label = "bootkernel1";
151			reg = <0x100000 0x300000>;
152			read-only;
153		};
154
155		partition2@400000 {
156			label = "nvram";
157			reg = <0x400000 0x100000>;
158			read-only;
159		};
160
161		partition3@500000 {
162			label = "bootkernel2";
163			reg = <0x500000 0x300000>;
164			read-only;
165		};
166
167		partition4@800000 {
168			label = "ubi";
169			reg = <0x800000 0x7780000>;
170		};
171	};
172};
173
174&srab {
175	status = "okay";
176
177	ports {
178		port@0 {
179			reg = <0>;
180			label = "poe";
181		};
182
183		port@5 {
184			reg = <5>;
185			label = "cpu";
186			ethernet = <&gmac0>;
187
188			fixed-link {
189				speed = <1000>;
190				duplex-full;
191			};
192		};
193	};
194};
195
196&i2c0 {
197	status = "okay";
198
199	pinctrl-names = "default";
200	pinctrl-0 = <&pinmux_i2c>;
201
202	clock-frequency = <100000>;
203
204	current_sense: ina219@45 {
205		compatible = "ti,ina219";
206		reg = <0x45>;
207		shunt-resistor = <60000>; /* = 60 mOhms */
208	};
209
210	eeprom: eeprom@50 {
211		compatible = "atmel,24c64";
212		reg = <0x50>;
213		pagesize = <32>;
214		read-only;
215		#address-cells = <1>;
216		#size-cells = <1>;
217
218		mac_address: mac-address@66 {
219			reg = <0x66 0x6>;
220		};
221	};
222};