target/linux/bcm53xx/patches-5.4/330-ARM-BCM5301X-Add-DT-for-Meraki-MR32.patch

   1 From ec88a9c344d9fd8c3b11bff1f99a0b6248ae256d Mon Sep 17 00:00:00 2001
   2 From: Christian Lamparter <chunkeey@gmail.com>
   3 Date: Sat, 22 Aug 2020 18:19:23 +0200
   4 Subject: [PATCH] ARM: BCM5301X: Add DT for Meraki MR32
   5
   6 add support for the Cisco Meraki MR32.
   7 This is a dual-band enterprise class 802.11ac access point.
   8 The unit was donated by Chris Blake. Thank you!
   9
  10 SoC:    Broadcom BCM53016A1 (1 GHz, 2 cores)
  11 RAM:    128 MiB
  12 NAND:   128 MiB Spansion S34ML01G2 (~114 MiB useable)
  13 ETH:    1GBit Ethernet Port - PoE
  14 WIFI1:  Broadcom BCM43520 an+ac (2x2:2 - id: 0x4352)
  15 WIFI2:  Broadcom BCM43520 bgn (2x2:2 - id: 0x4352)
  16 WIFI3:  Broadcom BCM43428 abgn (1x1:1 - id: 43428)
  17
  18 BLE:    Broadcom BCM20732 (ttyS1)
  19 LEDS:   1 x Programmable RGB Status LED (driven by a PWM)
  20         1 x White LED (GPIO)
  21         1 x Orange LED Fault Indicator (GPIO)
  22         2 x LAN Activity / Speed LEDs (On the RJ45 Port)
  23 BUTTON: one Reset button
  24 MISC:   AT24C64 8KiB EEPROM (i2c - stores Ethernet MAC)
  25         ina219 hardware monitor (i2c)
  26         Kensington Lock
  27
  28 SERIAL:
  29         WARNING: The serial port needs a TTL/RS-232 3V3 level converter!
  30         The Serial setting is 115200-8-N-1. The board has a populated
  31         right angle 1x4 0.1" pinheader.
  32         The pinout is: VCC, RX, TX, GND.
  33
  34 Odd stuff:
  35         - uart0 clock frequency is 62.5 MHz.
  36         - The LEDs are labeled as SYS-LED1 through SYS-LED3
  37           because of the silkscreen on the PCB.
  38         - the original u-boot has been compiled with most functions
  39           and commands disabled. The u-boot env isn't setup properly
  40           either and as a result, the bcm47xxpart probing is not
  41           working. Hence, the nand partitions are specified through a
  42           "fixed-partition" binding.
  43         - The "WICED SMART(TM)" Bluetooth LE 4.0 BCM20732 chip is
  44           connected to uart2 of the SoC. The BCM20732 does not
  45           provide a HCI. So the linux' bluetooth stack is useless.
  46           The mock-up node with the compatible binding and
  47           enable-gpios property is provided solely as documentation.
  48
  49 Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
  50 Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
  51
  52 --- a/arch/arm/boot/dts/Makefile
  53 +++ b/arch/arm/boot/dts/Makefile
  54 @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
  55         bcm47094-luxul-xwr-3150-v1.dtb \
  56         bcm47094-netgear-r8500.dtb \
  57         bcm47094-phicomm-k3.dtb \
  58 +       bcm53016-meraki-mr32.dtb \
  59         bcm94708.dtb \
  60         bcm94709.dtb \
  61         bcm953012er.dtb \
  62 --- /dev/null
  63 +++ b/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
  64 @@ -0,0 +1,197 @@
  65 +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
  66 +/*
  67 + * Broadcom BCM470X / BCM5301X ARM platform code.
  68 + * DTS for Meraki MR32 / Codename: Espresso
  69 + *
  70 + * Copyright (C) 2018-2020 Christian Lamparter <chunkeey@gmail.com>
  71 + */
  72 +
  73 +/dts-v1/;
  74 +
  75 +#include "bcm4708.dtsi"
  76 +#include "bcm5301x-nand-cs0-bch8.dtsi"
  77 +#include <dt-bindings/leds/common.h>
  78 +
  79 +/ {
  80 +       compatible = "meraki,mr32", "brcm,brcm53016", "brcm,bcm4708";
  81 +       model = "Meraki MR32";
  82 +
  83 +       chosen {
  84 +               bootargs = " console=ttyS0,115200n8 earlycon";
  85 +       };
  86 +
  87 +       memory {
  88 +               reg = <0x00000000 0x08000000>;
  89 +               device_type = "memory";
  90 +       };
  91 +
  92 +       aliases {
  93 +               serial1 = &uart2;
  94 +       };
  95 +
  96 +       leds {
  97 +               compatible = "gpio-leds";
  98 +
  99 +               sysled3 {
 100 +                       function = LED_FUNCTION_FAULT;
 101 +                       color = <LED_COLOR_ID_AMBER>;
 102 +                       gpios = <&chipcommon 18 GPIO_ACTIVE_LOW>;
 103 +                       panic-indicator;
 104 +               };
 105 +               sysled2 {
 106 +                       function = LED_FUNCTION_INDICATOR;
 107 +                       color = <LED_COLOR_ID_WHITE>;
 108 +                       gpios = <&chipcommon 19 GPIO_ACTIVE_HIGH>;
 109 +               };
 110 +       };
 111 +
 112 +       keys {
 113 +               compatible = "gpio-keys";
 114 +               #address-cells = <1>;
 115 +               #size-cells = <0>;
 116 +
 117 +               restart {
 118 +                       label = "Reset";
 119 +                       linux,code = <KEY_RESTART>;
 120 +                       gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>;
 121 +               };
 122 +       };
 123 +
 124 +       pwm-leds {
 125 +               compatible = "pwm-leds";
 126 +
 127 +               red {
 128 +                       /* SYS-LED 1 - Tricolor */
 129 +                       function = LED_FUNCTION_INDICATOR;
 130 +                       color = <LED_COLOR_ID_RED>;
 131 +                       pwms = <&pwm 0 50000 0>;
 132 +                       max-brightness = <255>;
 133 +               };
 134 +
 135 +               green {
 136 +                       /* SYS-LED 1 - Tricolor */
 137 +                       function = LED_FUNCTION_POWER;
 138 +                       color = <LED_COLOR_ID_GREEN>;
 139 +                       pwms = <&pwm 1 50000 0>;
 140 +                       max-brightness = <255>;
 141 +               };
 142 +
 143 +               blue {
 144 +                       /* SYS-LED 1 - Tricolor */
 145 +                       function = LED_FUNCTION_INDICATOR;
 146 +                       color = <LED_COLOR_ID_BLUE>;
 147 +                       pwms = <&pwm 2 50000 0>;
 148 +                       max-brightness = <255>;
 149 +               };
 150 +       };
 151 +
 152 +       i2c {
 153 +               /*
 154 +                * The platform provided I2C does not budge.
 155 +                * This is a replacement until I can figure
 156 +                * out what are the missing bits...
 157 +                */
 158 +
 159 +               compatible = "i2c-gpio";
 160 +               sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
 161 +               scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
 162 +               i2c-gpio,delay-us = <10>; /* close to 100 kHz */
 163 +               #address-cells = <1>;
 164 +               #size-cells = <0>;
 165 +
 166 +               current_sense: ina219@45 {
 167 +                       compatible = "ti,ina219";
 168 +                       reg = <0x45>;
 169 +                       shunt-resistor = <60000>; /* = 60 mOhms */
 170 +               };
 171 +
 172 +               eeprom: eeprom@50 {
 173 +                       compatible = "atmel,24c64";
 174 +                       reg = <0x50>;
 175 +                       pagesize = <32>;
 176 +                       read-only;
 177 +               };
 178 +       };
 179 +};
 180 +
 181 +&uart0 {
 182 +       clock-frequency = <62500000>;
 183 +       /delete-property/ clocks;
 184 +};
 185 +
 186 +&uart1 {
 187 +       status = "disabled";
 188 +};
 189 +
 190 +&uart2 {
 191 +       status = "okay";
 192 +       /*
 193 +        * bluetooth-le {
 194 +        *      compatible = "brcm,bcm20732";
 195 +        *      enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>;
 196 +        *};
 197 +        */
 198 +};
 199 +
 200 +&gmac1 {
 201 +       status = "disabled";
 202 +};
 203 +&gmac2 {
 204 +       status = "disabled";
 205 +};
 206 +&gmac3 {
 207 +       status = "disabled";
 208 +};
 209 +
 210 +&pwm {
 211 +       status = "okay";
 212 +       pinctrl-names = "default";
 213 +       pinctrl-0 = <&pinmux_pwm>;
 214 +};
 215 +
 216 +&nandcs {
 217 +       nand-ecc-algo = "hw";
 218 +
 219 +       partitions {
 220 +               /*
 221 +                * The partition autodetection does not work for this device.
 222 +                * It will only detect the "nvram" partition with an incorrect size.
 223 +                *      [    1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0
 224 +                *      [    1.727962] Creating 1 MTD partitions on "brcmnand.0":
 225 +                *      [    1.733117] 0x000000400000-0x000008000000 : "nvram"
 226 +                */
 227 +
 228 +               compatible = "fixed-partitions";
 229 +               #address-cells = <0x1>;
 230 +               #size-cells = <0x1>;
 231 +
 232 +               partition0@0 {
 233 +                       label = "u-boot";
 234 +                       reg = <0x0 0x100000>;
 235 +                       read-only;
 236 +               };
 237 +
 238 +               partition1@100000 {
 239 +                       label = "bootkernel1";
 240 +                       reg = <0x100000 0x300000>;
 241 +                       read-only;
 242 +               };
 243 +
 244 +               partition2@400000 {
 245 +                       label = "nvram";
 246 +                       reg = <0x400000 0x100000>;
 247 +                       read-only;
 248 +               };
 249 +
 250 +               partition3@500000 {
 251 +                       label = "bootkernel2";
 252 +                       reg = <0x500000 0x300000>;
 253 +                       read-only;
 254 +               };
 255 +
 256 +               partition4@800000 {
 257 +                       label = "ubi";
 258 +                       reg = <0x800000 0x7780000>;
 259 +               };
 260 +       };
 261 +};