target/linux/bcm53xx/patches-5.4/033-v5.10-0004-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  arch/arm/boot/dts/Makefile                 |   1 +
  53  arch/arm/boot/dts/bcm53016-meraki-mr32.dts | 197 +++++++++++++++++++++
  54  2 files changed, 198 insertions(+)
  55  create mode 100644 arch/arm/boot/dts/bcm53016-meraki-mr32.dts
  56
  57 --- a/arch/arm/boot/dts/Makefile
  58 +++ b/arch/arm/boot/dts/Makefile
  59 @@ -118,6 +118,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
  60         bcm47094-luxul-xwr-3150-v1.dtb \
  61         bcm47094-netgear-r8500.dtb \
  62         bcm47094-phicomm-k3.dtb \
  63 +       bcm53016-meraki-mr32.dtb \
  64         bcm94708.dtb \
  65         bcm94709.dtb \
  66         bcm953012er.dtb \
  67 --- /dev/null
  68 +++ b/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
  69 @@ -0,0 +1,197 @@
  70 +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
  71 +/*
  72 + * Broadcom BCM470X / BCM5301X ARM platform code.
  73 + * DTS for Meraki MR32 / Codename: Espresso
  74 + *
  75 + * Copyright (C) 2018-2020 Christian Lamparter <chunkeey@gmail.com>
  76 + */
  77 +
  78 +/dts-v1/;
  79 +
  80 +#include "bcm4708.dtsi"
  81 +#include "bcm5301x-nand-cs0-bch8.dtsi"
  82 +#include <dt-bindings/leds/common.h>
  83 +
  84 +/ {
  85 +       compatible = "meraki,mr32", "brcm,brcm53016", "brcm,bcm4708";
  86 +       model = "Meraki MR32";
  87 +
  88 +       chosen {
  89 +               bootargs = " console=ttyS0,115200n8 earlycon";
  90 +       };
  91 +
  92 +       memory {
  93 +               reg = <0x00000000 0x08000000>;
  94 +               device_type = "memory";
  95 +       };
  96 +
  97 +       aliases {
  98 +               serial1 = &uart2;
  99 +       };
 100 +
 101 +       leds {
 102 +               compatible = "gpio-leds";
 103 +
 104 +               sysled3 {
 105 +                       function = LED_FUNCTION_FAULT;
 106 +                       color = <LED_COLOR_ID_AMBER>;
 107 +                       gpios = <&chipcommon 18 GPIO_ACTIVE_LOW>;
 108 +                       panic-indicator;
 109 +               };
 110 +               sysled2 {
 111 +                       function = LED_FUNCTION_INDICATOR;
 112 +                       color = <LED_COLOR_ID_WHITE>;
 113 +                       gpios = <&chipcommon 19 GPIO_ACTIVE_HIGH>;
 114 +               };
 115 +       };
 116 +
 117 +       keys {
 118 +               compatible = "gpio-keys";
 119 +               #address-cells = <1>;
 120 +               #size-cells = <0>;
 121 +
 122 +               restart {
 123 +                       label = "Reset";
 124 +                       linux,code = <KEY_RESTART>;
 125 +                       gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>;
 126 +               };
 127 +       };
 128 +
 129 +       pwm-leds {
 130 +               compatible = "pwm-leds";
 131 +
 132 +               red {
 133 +                       /* SYS-LED 1 - Tricolor */
 134 +                       function = LED_FUNCTION_INDICATOR;
 135 +                       color = <LED_COLOR_ID_RED>;
 136 +                       pwms = <&pwm 0 50000 0>;
 137 +                       max-brightness = <255>;
 138 +               };
 139 +
 140 +               green {
 141 +                       /* SYS-LED 1 - Tricolor */
 142 +                       function = LED_FUNCTION_POWER;
 143 +                       color = <LED_COLOR_ID_GREEN>;
 144 +                       pwms = <&pwm 1 50000 0>;
 145 +                       max-brightness = <255>;
 146 +               };
 147 +
 148 +               blue {
 149 +                       /* SYS-LED 1 - Tricolor */
 150 +                       function = LED_FUNCTION_INDICATOR;
 151 +                       color = <LED_COLOR_ID_BLUE>;
 152 +                       pwms = <&pwm 2 50000 0>;
 153 +                       max-brightness = <255>;
 154 +               };
 155 +       };
 156 +
 157 +       i2c {
 158 +               /*
 159 +                * The platform provided I2C does not budge.
 160 +                * This is a replacement until I can figure
 161 +                * out what are the missing bits...
 162 +                */
 163 +
 164 +               compatible = "i2c-gpio";
 165 +               sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
 166 +               scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
 167 +               i2c-gpio,delay-us = <10>; /* close to 100 kHz */
 168 +               #address-cells = <1>;
 169 +               #size-cells = <0>;
 170 +
 171 +               current_sense: ina219@45 {
 172 +                       compatible = "ti,ina219";
 173 +                       reg = <0x45>;
 174 +                       shunt-resistor = <60000>; /* = 60 mOhms */
 175 +               };
 176 +
 177 +               eeprom: eeprom@50 {
 178 +                       compatible = "atmel,24c64";
 179 +                       reg = <0x50>;
 180 +                       pagesize = <32>;
 181 +                       read-only;
 182 +               };
 183 +       };
 184 +};
 185 +
 186 +&uart0 {
 187 +       clock-frequency = <62500000>;
 188 +       /delete-property/ clocks;
 189 +};
 190 +
 191 +&uart1 {
 192 +       status = "disabled";
 193 +};
 194 +
 195 +&uart2 {
 196 +       status = "okay";
 197 +       /*
 198 +        * bluetooth-le {
 199 +        *      compatible = "brcm,bcm20732";
 200 +        *      enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>;
 201 +        *};
 202 +        */
 203 +};
 204 +
 205 +&gmac1 {
 206 +       status = "disabled";
 207 +};
 208 +&gmac2 {
 209 +       status = "disabled";
 210 +};
 211 +&gmac3 {
 212 +       status = "disabled";
 213 +};
 214 +
 215 +&pwm {
 216 +       status = "okay";
 217 +       pinctrl-names = "default";
 218 +       pinctrl-0 = <&pinmux_pwm>;
 219 +};
 220 +
 221 +&nandcs {
 222 +       nand-ecc-algo = "hw";
 223 +
 224 +       partitions {
 225 +               /*
 226 +                * The partition autodetection does not work for this device.
 227 +                * It will only detect the "nvram" partition with an incorrect size.
 228 +                *      [    1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0
 229 +                *      [    1.727962] Creating 1 MTD partitions on "brcmnand.0":
 230 +                *      [    1.733117] 0x000000400000-0x000008000000 : "nvram"
 231 +                */
 232 +
 233 +               compatible = "fixed-partitions";
 234 +               #address-cells = <0x1>;
 235 +               #size-cells = <0x1>;
 236 +
 237 +               partition0@0 {
 238 +                       label = "u-boot";
 239 +                       reg = <0x0 0x100000>;
 240 +                       read-only;
 241 +               };
 242 +
 243 +               partition1@100000 {
 244 +                       label = "bootkernel1";
 245 +                       reg = <0x100000 0x300000>;
 246 +                       read-only;
 247 +               };
 248 +
 249 +               partition2@400000 {
 250 +                       label = "nvram";
 251 +                       reg = <0x400000 0x100000>;
 252 +                       read-only;
 253 +               };
 254 +
 255 +               partition3@500000 {
 256 +                       label = "bootkernel2";
 257 +                       reg = <0x500000 0x300000>;
 258 +                       read-only;
 259 +               };
 260 +
 261 +               partition4@800000 {
 262 +                       label = "ubi";
 263 +                       reg = <0x800000 0x7780000>;
 264 +               };
 265 +       };
 266 +};