tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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@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 #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
89&uart0 {
90 clock-frequency = <62500000>;
91 /delete-property/ clocks;
92};
93
94&uart1 {
95 status = "disabled";
96};
97
98&uart2 {
99 status = "okay";
100 /*
101 * bluetooth-le {
102 * compatible = "brcm,bcm20732";
103 * enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>;
104 *};
105 */
106};
107
108&gmac0 {
109 nvmem-cell-names = "mac-address";
110 nvmem-cells = <&mac_address>;
111};
112
113&gmac1 {
114 status = "disabled";
115};
116&gmac2 {
117 status = "disabled";
118};
119&gmac3 {
120 status = "disabled";
121};
122
123&pwm {
124 status = "okay";
125 pinctrl-names = "default";
126 pinctrl-0 = <&pinmux_pwm>;
127};
128
129&nandcs {
130 nand-ecc-algo = "hw";
131
132 partitions {
133 /*
134 * The partition autodetection does not work for this device.
135 * It will only detect the "nvram" partition with an incorrect size.
136 * [ 1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0
137 * [ 1.727962] Creating 1 MTD partitions on "brcmnand.0":
138 * [ 1.733117] 0x000000400000-0x000008000000 : "nvram"
139 */
140
141 compatible = "fixed-partitions";
142 #address-cells = <0x1>;
143 #size-cells = <0x1>;
144
145 partition0@0 {
146 label = "u-boot";
147 reg = <0x0 0x100000>;
148 read-only;
149 };
150
151 partition1@100000 {
152 label = "bootkernel1";
153 reg = <0x100000 0x300000>;
154 read-only;
155 };
156
157 partition2@400000 {
158 label = "nvram";
159 reg = <0x400000 0x100000>;
160 read-only;
161 };
162
163 partition3@500000 {
164 label = "bootkernel2";
165 reg = <0x500000 0x300000>;
166 read-only;
167 };
168
169 partition4@800000 {
170 label = "ubi";
171 reg = <0x800000 0x7780000>;
172 };
173 };
174};
175
176&srab {
177 status = "okay";
178
179 ports {
180 port@0 {
181 reg = <0>;
182 label = "poe";
183 };
184
185 port@5 {
186 reg = <5>;
187 label = "cpu";
188 ethernet = <&gmac0>;
189
190 fixed-link {
191 speed = <1000>;
192 duplex-full;
193 };
194 };
195 };
196};
197
198&i2c0 {
199 status = "okay";
200
201 pinctrl-names = "default";
202 pinctrl-0 = <&pinmux_i2c>;
203
204 clock-frequency = <100000>;
205
206 current_sense: ina219@45 {
207 compatible = "ti,ina219";
208 reg = <0x45>;
209 shunt-resistor = <60000>; /* = 60 mOhms */
210 };
211
212 eeprom: eeprom@50 {
213 compatible = "atmel,24c64";
214 reg = <0x50>;
215 pagesize = <32>;
216 read-only;
217 #address-cells = <1>;
218 #size-cells = <1>;
219
220 mac_address: mac-address@66 {
221 reg = <0x66 0x6>;
222 };
223 };
224};