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+From 935327a73553001f8d81375c76985d05f604507f Mon Sep 17 00:00:00 2001
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+From: Christian Lamparter <[email protected]>
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+Date: Sat, 18 Jun 2022 00:00:29 +0200
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+Subject: [PATCH] ARM: dts: BCM5301X: Add DT for Meraki MR26
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+
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+Meraki MR26 is an EOL wireless access point featuring a
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+PoE ethernet port and two dual-band 3x3 MIMO 802.11n
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+radios and 1x1 dual-band WIFI dedicated to scanning.
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+
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+Thank you Amir for the unit and PSU.
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+
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+Hardware info:
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+SOC : Broadcom BCM53015A1KFEBG (dual-core Cortex-A9 CPU at 800 MHz)
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+RAM : SK Hynix Inc. H5TQ1G63EFR, 1 GBit DDR3 SDRAM = 128 MiB
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+NAND : Spansion S34ML01G100TF100, 1 GBit SLC NAND Flash = 128 MiB
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+ETH : 1 GBit Ethernet Port - PoE (TPS23754 PoE Interface)
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+WIFI0 : Broadcom BCM43431KMLG, BCM43431 802.11 abgn (3x3:3)
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+WIFI1 : Broadcom BCM43431KMLG, BCM43431 802.11 abgn (3x3:3)
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+WIFI2 : Broadcom BCM43428 "Air Marshal" 802.11 abgn (1x1:1)
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+BUTTON: One reset key behind a small hole next to the Ethernet Port
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+LEDS : One amber (fault), one white (indicator) LED, separate RGB-LED
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+MISC : Atmel AT24C64 8KiB EEPROM i2c
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+ : Ti INA219 26V, 12-bit, i2c output current/voltage/power monitor
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+
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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 (next to J3, has the pin 1 indicator), RX, TX, GND.
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+
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+Odd stuff:
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+
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+- uboot does not support lzma compression, but gzip'd uImage/DTB work.
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+- uboot claims to support FIT, but fails to pass the DTB to the kernel.
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+ Appending the dtb after the kernel image works.
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+- RGB-controller is supported through an external userspace program.
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+- The ubi partition contains a "board-config" volume. It stores the
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+ MAC Address (0x66 in binary) and Serial No. (0x7c alpha-numerical).
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+- SoC's temperature sensor always reports that it is on fire.
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+ This causes the system to immediately shutdown! Looking at reported
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+ "418 degree Celsius" suggests that this sensor is not working.
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+
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+WIFI:
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+b43 is able to initialize all three WIFIs @ 802.11bg.
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+| b43-phy0: Broadcom 43431 WLAN found (core revision 29)
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+| bcma-pci-bridge 0000:01:00.0: bus1: Switched to core: 0x812
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+| b43-phy0: Found PHY: Analog 9, Type 7 (HT), Revision 1
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+| b43-phy0: Found Radio: Manuf 0x17F, ID 0x2059, Revision 0, Version 1
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+| b43-phy0 warning: 5 GHz band is unsupported on this PHY
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+| b43-phy1: Broadcom 43431 WLAN found (core revision 29)
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+| bcma-pci-bridge 0001:01:00.0: bus2: Switched to core: 0x812
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+| b43-phy1: Found PHY: Analog 9, Type 7 (HT), Revision 1
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+| b43-phy1: Found Radio: Manuf 0x17F, ID 0x2059, Revision 0, Version 1
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+| b43-phy1 warning: 5 GHz band is unsupported on this PHY
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+| b43-phy2: Broadcom 43228 WLAN found (core revision 30)
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+| bcma-pci-bridge 0002:01:00.0: bus3: Switched to core: 0x812
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+| b43-phy2: Found PHY: Analog 9, Type 4 (N), Revision 16
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+| b43-phy2: Found Radio: Manuf 0x17F, ID 0x2057, Revision 9, Version 1
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+| Broadcom 43xx driver loaded [ Features: NL ]
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+
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+Signed-off-by: Christian Lamparter <[email protected]>
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+Signed-off-by: Florian Fainelli <[email protected]>
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+---
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+--- /dev/null
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++++ b/arch/arm/boot/dts/bcm53015-meraki-mr26.dts
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+@@ -0,0 +1,166 @@
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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 MR26 / Codename: Venom
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++ *
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++ * Copyright (C) 2022 Christian Lamparter <[email protected]>
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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,mr26", "brcm,bcm53015", "brcm,bcm4708";
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++ model = "Meraki MR26";
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++
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++ memory@0 {
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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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++ leds {
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++ compatible = "gpio-leds";
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++
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++ led-0 {
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++ function = LED_FUNCTION_FAULT;
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++ color = <LED_COLOR_ID_AMBER>;
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++ gpios = <&chipcommon 13 GPIO_ACTIVE_HIGH>;
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++ panic-indicator;
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++ };
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++ led-1 {
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++ function = LED_FUNCTION_INDICATOR;
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++ color = <LED_COLOR_ID_WHITE>;
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++ gpios = <&chipcommon 12 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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++ key-restart {
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++ label = "Reset";
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++ linux,code = <KEY_RESTART>;
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++ gpios = <&chipcommon 11 GPIO_ACTIVE_LOW>;
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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 = <50000000>;
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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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++&gmac0 {
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++ status = "okay";
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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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++&nandcs {
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++ nand-ecc-algo = "hw";
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++
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++ partitions {
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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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++ partition@0 {
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++ label = "u-boot";
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++ reg = <0x0 0x200000>;
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++ read-only;
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++ };
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++
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++ partition@200000 {
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++ label = "u-boot-env";
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++ reg = <0x200000 0x200000>;
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++ /* empty */
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++ };
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++
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++ partition@400000 {
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++ label = "u-boot-backup";
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++ reg = <0x400000 0x200000>;
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++ /* empty */
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++ };
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++
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++ partition@600000 {
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++ label = "u-boot-env-backup";
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++ reg = <0x600000 0x200000>;
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++ /* empty */
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++ };
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++
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++ partition@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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++
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++&srab {
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++ status = "okay";
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++
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++ ports {
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++ port@0 {
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++ reg = <0>;
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++ label = "poe";
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++ };
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++
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++ port@5 {
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++ reg = <5>;
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++ label = "cpu";
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++ ethernet = <&gmac0>;
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++
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++ fixed-link {
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++ speed = <1000>;
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++ duplex-full;
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++ };
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++ };
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++ };
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++};
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++
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++&i2c0 {
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++ status = "okay";
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++
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++ pinctrl-names = "default";
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++ pinctrl-0 = <&pinmux_i2c>;
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++
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++ clock-frequency = <100000>;
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++
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++ ina219@40 {
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++ compatible = "ti,ina219"; /* PoE power */
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++ reg = <0x40>;
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++ shunt-resistor = <60000>; /* = 60 mOhms */
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++ };
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++
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++ eeprom@56 {
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++ compatible = "atmel,24c64";
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++ reg = <0x56>;
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++ pagesize = <32>;
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++ read-only;
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++ #address-cells = <1>;
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++ #size-cells = <1>;
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++
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++ /* it's empty */
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++ };
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++};
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++
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++&thermal {
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++ status = "disabled";
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++ /* does not work, reads 418 degree Celsius */
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++};
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+--- a/arch/arm/boot/dts/Makefile
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++++ b/arch/arm/boot/dts/Makefile
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+@@ -129,6 +129,7 @@ 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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++ bcm53015-meraki-mr26.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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Christian Lamparter