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>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index c8bdba38a4883da0b0acd8c500bc83f5be358b85..5406ee68f75d8cffbf043ffa0998cc8577e87e9d 100644 (file)
--- 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 (file)
index 0000000..14f5803
--- /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 */
+};