Commit 935327a7 authored Jun 18, 2022 by Christian Lamparter Committed by Florian Fainelli Jun 20, 2022

ARM: dts: BCM5301X: Add DT for Meraki MR26



Meraki MR26 is an EOL wireless access point featuring a
PoE ethernet port and two dual-band 3x3 MIMO 802.11n
radios and 1x1 dual-band WIFI dedicated to scanning.

Thank you Amir for the unit and PSU.

Hardware info:
SOC   : Broadcom BCM53015A1KFEBG (dual-core Cortex-A9 CPU at 800 MHz)
RAM   : SK Hynix Inc. H5TQ1G63EFR, 1 GBit DDR3 SDRAM = 128 MiB
NAND  : Spansion S34ML01G100TF100, 1 GBit SLC NAND Flash = 128 MiB
ETH   : 1 GBit Ethernet Port - PoE (TPS23754 PoE Interface)
WIFI0 : Broadcom BCM43431KMLG, BCM43431 802.11 abgn (3x3:3)
WIFI1 : Broadcom BCM43431KMLG, BCM43431 802.11 abgn (3x3:3)
WIFI2 : Broadcom BCM43428 "Air Marshal" 802.11 abgn (1x1:1)
BUTTON: One reset key behind a small hole next to the Ethernet Port
LEDS  : One amber (fault), one white (indicator) LED, separate RGB-LED
MISC  : Atmel AT24C64 8KiB EEPROM i2c
      : Ti INA219 26V, 12-bit, i2c output current/voltage/power monitor

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 (next to J3, has the pin 1 indicator), RX, TX, GND.

Odd stuff:

- uboot does not support lzma compression, but gzip'd uImage/DTB work.
- uboot claims to support FIT, but fails to pass the DTB to the kernel.
  Appending the dtb after the kernel image works.
- RGB-controller is supported through an external userspace program.
- The ubi partition contains a "board-config" volume. It stores the
  MAC Address (0x66 in binary) and Serial No. (0x7c alpha-numerical).
- SoC's temperature sensor always reports that it is on fire.
  This causes the system to immediately shutdown! Looking at reported
  "418 degree Celsius" suggests that this sensor is not working.

WIFI:
b43 is able to initialize all three WIFIs @ 802.11bg.
| b43-phy0: Broadcom 43431 WLAN found (core revision 29)
| bcma-pci-bridge 0000:01:00.0: bus1: Switched to core: 0x812
| b43-phy0: Found PHY: Analog 9, Type 7 (HT), Revision 1
| b43-phy0: Found Radio: Manuf 0x17F, ID 0x2059, Revision 0, Version 1
| b43-phy0 warning: 5 GHz band is unsupported on this PHY
| b43-phy1: Broadcom 43431 WLAN found (core revision 29)
| bcma-pci-bridge 0001:01:00.0: bus2: Switched to core: 0x812
| b43-phy1: Found PHY: Analog 9, Type 7 (HT), Revision 1
| b43-phy1: Found Radio: Manuf 0x17F, ID 0x2059, Revision 0, Version 1
| b43-phy1 warning: 5 GHz band is unsupported on this PHY
| b43-phy2: Broadcom 43228 WLAN found (core revision 30)
| bcma-pci-bridge 0002:01:00.0: bus3: Switched to core: 0x812
| b43-phy2: Found PHY: Analog 9, Type 4 (N), Revision 16
| b43-phy2: Found Radio: Manuf 0x17F, ID 0x2057, Revision 9, Version 1
| Broadcom 43xx driver loaded [ Features: NL ]

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

parent 2f6a83dd

arch/arm/boot/dts/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -135,6 +135,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
		bcm47094-luxul-xwr-3150-v1.dtb \
		bcm47094-netgear-r8500.dtb \
		bcm47094-phicomm-k3.dtb \
		bcm53015-meraki-mr26.dtb \
		bcm53016-meraki-mr32.dtb \
		bcm94708.dtb \
		bcm94709.dtb \

arch/arm/boot/dts/bcm53015-meraki-mr26.dts

0 → 100644

+166 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
		/*
		* Broadcom BCM470X / BCM5301X ARM platform code.
		* DTS for Meraki MR26 / Codename: Venom
		*
		* Copyright (C) 2022 Christian Lamparter <chunkeey@gmail.com>
		*/

		/dts-v1/;

		#include "bcm4708.dtsi"
		#include "bcm5301x-nand-cs0-bch8.dtsi"
		#include <dt-bindings/leds/common.h>

		/ {
		compatible = "meraki,mr26", "brcm,bcm53015", "brcm,bcm4708";
		model = "Meraki MR26";

		memory@0 {
		reg = <0x00000000 0x08000000>;
		device_type = "memory";
		};

		leds {
		compatible = "gpio-leds";

		led-0 {
		function = LED_FUNCTION_FAULT;
		color = <LED_COLOR_ID_AMBER>;
		gpios = <&chipcommon 13 GPIO_ACTIVE_HIGH>;
		panic-indicator;
		};
		led-1 {
		function = LED_FUNCTION_INDICATOR;
		color = <LED_COLOR_ID_WHITE>;
		gpios = <&chipcommon 12 GPIO_ACTIVE_HIGH>;
		};
		};

		keys {
		compatible = "gpio-keys";
		#address-cells = <1>;
		#size-cells = <0>;

		key-restart {
		label = "Reset";
		linux,code = <KEY_RESTART>;
		gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
		};
		};
		};

		&uart0 {
		clock-frequency = <50000000>;
		/delete-property/ clocks;
		};

		&uart1 {
		status = "disabled";
		};

		&gmac0 {
		status = "okay";
		};

		&gmac1 {
		status = "disabled";
		};
		&gmac2 {
		status = "disabled";
		};
		&gmac3 {
		status = "disabled";
		};

		&nandcs {
		nand-ecc-algo = "hw";

		partitions {
		compatible = "fixed-partitions";
		#address-cells = <0x1>;
		#size-cells = <0x1>;

		partition@0 {
		label = "u-boot";
		reg = <0x0 0x200000>;
		read-only;
		};

		partition@200000 {
		label = "u-boot-env";
		reg = <0x200000 0x200000>;
		/* empty */
		};

		partition@400000 {
		label = "u-boot-backup";
		reg = <0x400000 0x200000>;
		/* empty */
		};

		partition@600000 {
		label = "u-boot-env-backup";
		reg = <0x600000 0x200000>;
		/* empty */
		};

		partition@800000 {
		label = "ubi";
		reg = <0x800000 0x7780000>;
		};
		};
		};

		&srab {
		status = "okay";

		ports {
		port@0 {
		reg = <0>;
		label = "poe";
		};

		port@5 {
		reg = <5>;
		label = "cpu";
		ethernet = <&gmac0>;

		fixed-link {
		speed = <1000>;
		duplex-full;
		};
		};
		};
		};

		&i2c0 {
		status = "okay";

		pinctrl-names = "default";
		pinctrl-0 = <&pinmux_i2c>;

		clock-frequency = <100000>;

		ina219@40 {
		compatible = "ti,ina219"; /* PoE power */
		reg = <0x40>;
		shunt-resistor = <60000>; /* = 60 mOhms */
		};

		eeprom@56 {
		compatible = "atmel,24c64";
		reg = <0x56>;
		pagesize = <32>;
		read-only;
		#address-cells = <1>;
		#size-cells = <1>;

		/* it's empty */
		};
		};

		&thermal {
		status = "disabled";
		/* does not work, reads 418 degree Celsius */
		};