ec88a9c344
add support for the Cisco Meraki MR32.
This is a dual-band enterprise class 802.11ac access point.
The unit was donated by Chris Blake. Thank you!
SoC: Broadcom BCM53016A1 (1 GHz, 2 cores)
RAM: 128 MiB
NAND: 128 MiB Spansion S34ML01G2 (~114 MiB useable)
ETH: 1GBit Ethernet Port - PoE
WIFI1: Broadcom BCM43520 an+ac (2x2:2 - id: 0x4352)
WIFI2: Broadcom BCM43520 bgn (2x2:2 - id: 0x4352)
WIFI3: Broadcom BCM43428 abgn (1x1:1 - id: 43428)
BLE: Broadcom BCM20732 (ttyS1)
LEDS: 1 x Programmable RGB Status LED (driven by a PWM)
1 x White LED (GPIO)
1 x Orange LED Fault Indicator (GPIO)
2 x LAN Activity / Speed LEDs (On the RJ45 Port)
BUTTON: one Reset button
MISC: AT24C64 8KiB EEPROM (i2c - stores Ethernet MAC)
ina219 hardware monitor (i2c)
Kensington Lock
SERIAL:
WARNING: The serial port needs a TTL/RS-232 3V3 level converter!
The Serial setting is 115200-8-N-1. The board has a populated
right angle 1x4 0.1" pinheader.
The pinout is: VCC, RX, TX, GND.
Odd stuff:
- uart0 clock frequency is 62.5 MHz.
- The LEDs are labeled as SYS-LED1 through SYS-LED3
because of the silkscreen on the PCB.
- the original u-boot has been compiled with most functions
and commands disabled. The u-boot env isn't setup properly
either and as a result, the bcm47xxpart probing is not
working. Hence, the nand partitions are specified through a
"fixed-partition" binding.
- The "WICED SMART(TM)" Bluetooth LE 4.0 BCM20732 chip is
connected to uart2 of the SoC. The BCM20732 does not
provide a HCI. So the linux' bluetooth stack is useless.
The mock-up node with the compatible binding and
enable-gpios property is provided solely as documentation.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
198 lines
3.6 KiB
Plaintext
198 lines
3.6 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
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/*
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* Broadcom BCM470X / BCM5301X ARM platform code.
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* DTS for Meraki MR32 / Codename: Espresso
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*
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* Copyright (C) 2018-2020 Christian Lamparter <chunkeey@gmail.com>
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*/
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/dts-v1/;
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#include "bcm4708.dtsi"
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#include "bcm5301x-nand-cs0-bch8.dtsi"
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#include <dt-bindings/leds/common.h>
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/ {
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compatible = "meraki,mr32", "brcm,brcm53016", "brcm,bcm4708";
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model = "Meraki MR32";
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chosen {
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bootargs = " console=ttyS0,115200n8 earlycon";
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};
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memory {
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reg = <0x00000000 0x08000000>;
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device_type = "memory";
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};
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aliases {
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serial1 = &uart2;
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};
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leds {
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compatible = "gpio-leds";
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sysled3 {
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function = LED_FUNCTION_FAULT;
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color = <LED_COLOR_ID_AMBER>;
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gpios = <&chipcommon 18 GPIO_ACTIVE_LOW>;
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panic-indicator;
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};
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sysled2 {
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function = LED_FUNCTION_INDICATOR;
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color = <LED_COLOR_ID_WHITE>;
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gpios = <&chipcommon 19 GPIO_ACTIVE_HIGH>;
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};
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};
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keys {
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compatible = "gpio-keys";
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#address-cells = <1>;
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#size-cells = <0>;
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restart {
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label = "Reset";
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linux,code = <KEY_RESTART>;
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gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>;
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};
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};
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pwm-leds {
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compatible = "pwm-leds";
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red {
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/* SYS-LED 1 - Tricolor */
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function = LED_FUNCTION_INDICATOR;
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color = <LED_COLOR_ID_RED>;
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pwms = <&pwm 0 50000 0>;
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max-brightness = <255>;
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};
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green {
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/* SYS-LED 1 - Tricolor */
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function = LED_FUNCTION_POWER;
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color = <LED_COLOR_ID_GREEN>;
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pwms = <&pwm 1 50000 0>;
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max-brightness = <255>;
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};
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blue {
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/* SYS-LED 1 - Tricolor */
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function = LED_FUNCTION_INDICATOR;
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color = <LED_COLOR_ID_BLUE>;
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pwms = <&pwm 2 50000 0>;
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max-brightness = <255>;
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};
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};
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i2c {
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/*
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* The platform provided I2C does not budge.
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* This is a replacement until I can figure
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* out what are the missing bits...
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*/
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compatible = "i2c-gpio";
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sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;
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scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;
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i2c-gpio,delay-us = <10>; /* close to 100 kHz */
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#address-cells = <1>;
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#size-cells = <0>;
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current_sense: ina219@45 {
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compatible = "ti,ina219";
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reg = <0x45>;
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shunt-resistor = <60000>; /* = 60 mOhms */
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};
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eeprom: eeprom@50 {
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compatible = "atmel,24c64";
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reg = <0x50>;
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pagesize = <32>;
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read-only;
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};
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};
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};
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&uart0 {
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clock-frequency = <62500000>;
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/delete-property/ clocks;
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};
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&uart1 {
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status = "disabled";
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};
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&uart2 {
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status = "okay";
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/*
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* bluetooth-le {
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* compatible = "brcm,bcm20732";
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* enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>;
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*};
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*/
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};
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&gmac1 {
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status = "disabled";
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};
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&gmac2 {
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status = "disabled";
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};
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&gmac3 {
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status = "disabled";
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};
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&pwm {
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status = "okay";
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pinctrl-names = "default";
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pinctrl-0 = <&pinmux_pwm>;
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};
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&nandcs {
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nand-ecc-algo = "hw";
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partitions {
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/*
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* The partition autodetection does not work for this device.
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* It will only detect the "nvram" partition with an incorrect size.
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* [ 1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0
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* [ 1.727962] Creating 1 MTD partitions on "brcmnand.0":
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* [ 1.733117] 0x000000400000-0x000008000000 : "nvram"
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*/
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compatible = "fixed-partitions";
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#address-cells = <0x1>;
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#size-cells = <0x1>;
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partition0@0 {
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label = "u-boot";
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reg = <0x0 0x100000>;
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read-only;
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};
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partition1@100000 {
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label = "bootkernel1";
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reg = <0x100000 0x300000>;
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read-only;
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};
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partition2@400000 {
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label = "nvram";
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reg = <0x400000 0x100000>;
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read-only;
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};
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partition3@500000 {
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label = "bootkernel2";
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reg = <0x500000 0x300000>;
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read-only;
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};
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partition4@800000 {
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label = "ubi";
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reg = <0x800000 0x7780000>;
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};
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};
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};
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