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    Subject[PATCH 5.19 0169/1157] ARM: dts: BCM5301X: Add DT for Meraki MR26
    Date
    From: Christian Lamparter <chunkeey@gmail.com>

    [ Upstream commit 935327a73553001f8d81375c76985d05f604507f ]

    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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm/boot/dts/Makefile | 1 +
    arch/arm/boot/dts/bcm53015-meraki-mr26.dts | 166 +++++++++++++++++++++
    2 files changed, 167 insertions(+)
    create mode 100644 arch/arm/boot/dts/bcm53015-meraki-mr26.dts

    diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
    index 5112f493f494..27eec8e670ec 100644
    --- a/arch/arm/boot/dts/Makefile
    +++ b/arch/arm/boot/dts/Makefile
    @@ -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 \
    diff --git a/arch/arm/boot/dts/bcm53015-meraki-mr26.dts b/arch/arm/boot/dts/bcm53015-meraki-mr26.dts
    new file mode 100644
    index 000000000000..14f58033efeb
    --- /dev/null
    +++ b/arch/arm/boot/dts/bcm53015-meraki-mr26.dts
    @@ -0,0 +1,166 @@
    +// 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 */
    +};
    --
    2.35.1


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