From ec88a9c344d9fd8c3b11bff1f99a0b6248ae256d Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 22 Aug 2020 18:19:23 +0200 Subject: [PATCH] ARM: BCM5301X: Add DT for Meraki MR32 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 Signed-off-by: Florian Fainelli --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \ bcm47094-luxul-xwr-3150-v1.dtb \ bcm47094-netgear-r8500.dtb \ bcm47094-phicomm-k3.dtb \ + bcm53016-meraki-mr32.dtb \ bcm94708.dtb \ bcm94709.dtb \ bcm953012er.dtb \ --- /dev/null +++ b/arch/arm/boot/dts/bcm53016-meraki-mr32.dts @@ -0,0 +1,197 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Broadcom BCM470X / BCM5301X ARM platform code. + * DTS for Meraki MR32 / Codename: Espresso + * + * Copyright (C) 2018-2020 Christian Lamparter + */ + +/dts-v1/; + +#include "bcm4708.dtsi" +#include "bcm5301x-nand-cs0-bch8.dtsi" +#include + +/ { + compatible = "meraki,mr32", "brcm,brcm53016", "brcm,bcm4708"; + model = "Meraki MR32"; + + chosen { + bootargs = " console=ttyS0,115200n8 earlycon"; + }; + + memory { + reg = <0x00000000 0x08000000>; + device_type = "memory"; + }; + + aliases { + serial1 = &uart2; + }; + + leds { + compatible = "gpio-leds"; + + sysled3 { + function = LED_FUNCTION_FAULT; + color = ; + gpios = <&chipcommon 18 GPIO_ACTIVE_LOW>; + panic-indicator; + }; + sysled2 { + function = LED_FUNCTION_INDICATOR; + color = ; + gpios = <&chipcommon 19 GPIO_ACTIVE_HIGH>; + }; + }; + + keys { + compatible = "gpio-keys"; + #address-cells = <1>; + #size-cells = <0>; + + restart { + label = "Reset"; + linux,code = ; + gpios = <&chipcommon 21 GPIO_ACTIVE_LOW>; + }; + }; + + pwm-leds { + compatible = "pwm-leds"; + + red { + /* SYS-LED 1 - Tricolor */ + function = LED_FUNCTION_INDICATOR; + color = ; + pwms = <&pwm 0 50000 0>; + max-brightness = <255>; + }; + + green { + /* SYS-LED 1 - Tricolor */ + function = LED_FUNCTION_POWER; + color = ; + pwms = <&pwm 1 50000 0>; + max-brightness = <255>; + }; + + blue { + /* SYS-LED 1 - Tricolor */ + function = LED_FUNCTION_INDICATOR; + color = ; + pwms = <&pwm 2 50000 0>; + max-brightness = <255>; + }; + }; + + i2c { + /* + * The platform provided I2C does not budge. + * This is a replacement until I can figure + * out what are the missing bits... + */ + + compatible = "i2c-gpio"; + sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>; + scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>; + i2c-gpio,delay-us = <10>; /* close to 100 kHz */ + #address-cells = <1>; + #size-cells = <0>; + + current_sense: ina219@45 { + compatible = "ti,ina219"; + reg = <0x45>; + shunt-resistor = <60000>; /* = 60 mOhms */ + }; + + eeprom: eeprom@50 { + compatible = "atmel,24c64"; + reg = <0x50>; + pagesize = <32>; + read-only; + }; + }; +}; + +&uart0 { + clock-frequency = <62500000>; + /delete-property/ clocks; +}; + +&uart1 { + status = "disabled"; +}; + +&uart2 { + status = "okay"; + /* + * bluetooth-le { + * compatible = "brcm,bcm20732"; + * enable-gpios = <&chipcommon 20 GPIO_ACTIVE_HIGH>; + *}; + */ +}; + +&gmac1 { + status = "disabled"; +}; +&gmac2 { + status = "disabled"; +}; +&gmac3 { + status = "disabled"; +}; + +&pwm { + status = "okay"; + pinctrl-names = "default"; + pinctrl-0 = <&pinmux_pwm>; +}; + +&nandcs { + nand-ecc-algo = "hw"; + + partitions { + /* + * The partition autodetection does not work for this device. + * It will only detect the "nvram" partition with an incorrect size. + * [ 1.721667] 1 bcm47xxpart partitions found on MTD device brcmnand.0 + * [ 1.727962] Creating 1 MTD partitions on "brcmnand.0": + * [ 1.733117] 0x000000400000-0x000008000000 : "nvram" + */ + + compatible = "fixed-partitions"; + #address-cells = <0x1>; + #size-cells = <0x1>; + + partition0@0 { + label = "u-boot"; + reg = <0x0 0x100000>; + read-only; + }; + + partition1@100000 { + label = "bootkernel1"; + reg = <0x100000 0x300000>; + read-only; + }; + + partition2@400000 { + label = "nvram"; + reg = <0x400000 0x100000>; + read-only; + }; + + partition3@500000 { + label = "bootkernel2"; + reg = <0x500000 0x300000>; + read-only; + }; + + partition4@800000 { + label = "ubi"; + reg = <0x800000 0x7780000>; + }; + }; +};