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267 lines
6.4 KiB
Diff
267 lines
6.4 KiB
Diff
From ec88a9c344d9fd8c3b11bff1f99a0b6248ae256d Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@gmail.com>
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Date: Sat, 22 Aug 2020 18:19:23 +0200
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Subject: [PATCH] ARM: BCM5301X: Add DT for Meraki MR32
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add support for the Cisco Meraki MR32.
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This is a dual-band enterprise class 802.11ac access point.
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The unit was donated by Chris Blake. Thank you!
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SoC: Broadcom BCM53016A1 (1 GHz, 2 cores)
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RAM: 128 MiB
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NAND: 128 MiB Spansion S34ML01G2 (~114 MiB useable)
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ETH: 1GBit Ethernet Port - PoE
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WIFI1: Broadcom BCM43520 an+ac (2x2:2 - id: 0x4352)
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WIFI2: Broadcom BCM43520 bgn (2x2:2 - id: 0x4352)
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WIFI3: Broadcom BCM43428 abgn (1x1:1 - id: 43428)
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BLE: Broadcom BCM20732 (ttyS1)
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LEDS: 1 x Programmable RGB Status LED (driven by a PWM)
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1 x White LED (GPIO)
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1 x Orange LED Fault Indicator (GPIO)
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2 x LAN Activity / Speed LEDs (On the RJ45 Port)
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BUTTON: one Reset button
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MISC: AT24C64 8KiB EEPROM (i2c - stores Ethernet MAC)
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ina219 hardware monitor (i2c)
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Kensington Lock
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SERIAL:
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WARNING: The serial port needs a TTL/RS-232 3V3 level converter!
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The Serial setting is 115200-8-N-1. The board has a populated
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right angle 1x4 0.1" pinheader.
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The pinout is: VCC, RX, TX, GND.
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Odd stuff:
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- uart0 clock frequency is 62.5 MHz.
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- The LEDs are labeled as SYS-LED1 through SYS-LED3
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because of the silkscreen on the PCB.
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- the original u-boot has been compiled with most functions
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and commands disabled. The u-boot env isn't setup properly
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either and as a result, the bcm47xxpart probing is not
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working. Hence, the nand partitions are specified through a
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"fixed-partition" binding.
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- The "WICED SMART(TM)" Bluetooth LE 4.0 BCM20732 chip is
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connected to uart2 of the SoC. The BCM20732 does not
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provide a HCI. So the linux' bluetooth stack is useless.
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The mock-up node with the compatible binding and
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enable-gpios property is provided solely as documentation.
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Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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---
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arch/arm/boot/dts/Makefile | 1 +
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arch/arm/boot/dts/bcm53016-meraki-mr32.dts | 197 +++++++++++++++++++++
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2 files changed, 198 insertions(+)
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create mode 100644 arch/arm/boot/dts/bcm53016-meraki-mr32.dts
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--- a/arch/arm/boot/dts/Makefile
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+++ b/arch/arm/boot/dts/Makefile
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@@ -118,6 +118,7 @@ dtb-$(CONFIG_ARCH_BCM_5301X) += \
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bcm47094-luxul-xwr-3150-v1.dtb \
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bcm47094-netgear-r8500.dtb \
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bcm47094-phicomm-k3.dtb \
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+ bcm53016-meraki-mr32.dtb \
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bcm94708.dtb \
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bcm94709.dtb \
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bcm953012er.dtb \
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--- /dev/null
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+++ b/arch/arm/boot/dts/bcm53016-meraki-mr32.dts
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@@ -0,0 +1,197 @@
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+// 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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+
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+/dts-v1/;
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+
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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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+/ {
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+ compatible = "meraki,mr32", "brcm,brcm53016", "brcm,bcm4708";
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+ model = "Meraki MR32";
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+
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+ chosen {
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+ bootargs = " console=ttyS0,115200n8 earlycon";
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+ };
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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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+
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+ aliases {
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+ serial1 = &uart2;
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+ };
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+
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+ leds {
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+ compatible = "gpio-leds";
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+
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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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+
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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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+
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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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+
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+ pwm-leds {
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+ compatible = "pwm-leds";
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+&uart1 {
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+ status = "disabled";
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+};
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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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+
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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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+
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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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+
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+&nandcs {
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+ nand-ecc-algo = "hw";
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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