Marvell's thermal sensors do not support interrupts, so we need to
poll them. Reading temperature every second should be enough to
control the fan.
While at it, also make sure fan speed is reduced again if temperature
goes down.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit fc177695e0)
The Puzzle devices come with an I2C-connected Epson RX8130 RTC.
Disable the (dysfunctional) RTC units of the SoC and add driver
kmod-rtc-ds1307 to support the Epson RX8130 instead.
Tested-by: Thomas Huehn <thomas.huehn@hs-nordhausen.de>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 6d546b3b4c)
Use <mdio>:<addr>:<speed> trigger instead of netdev(link) trigger for
Fortinet FortiGate 50E, to indicate link speed on the each phys.
1000 Mbps: Green
100 Mbps : Amber
10 Mbps : (turn off)
Fixes: 102dc5a625 ("mvebu: add support for Fortinet FortiGate 50E")
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Fortinet FortiGate 50E (FG-50E) is a UTM, based on Armada 385 (88F6820).
Specification:
- SoC : Marvell Armada 385 88F6820
- RAM : DDR3 2 GiB (4x Micron MT41K512M8DA-107, "D9SGQ")
- Flash : SPI-NOR 128 MiB (Macronix MX66L1G45GMI-10G)
- Ethernet : 7x 10/100/1000 Mbps
- LAN 1-5 : Marvell 88E6176
- WAN 1, 2 : Marvell 88E1512 (2x)
- LEDs/Keys : 18x/1x
- UART : "CONSOLE" port (RJ-45, RS-232C level)
- port : ttyS0
- settings : 9600bps 8n1
- assignment : 1:NC , 2:NC , 3:TXD, 4:GND,
5:GND, 6:RXD, 7:NC , 8:NC
- note : compatible with Cisco console cable
- HW Monitoring: nuvoTon NCT7802Y
- Power : 12 VDC, 2 A
- plug : Molex 5557-02R
Flash instruction using initramfs image:
1. Power on FG-50E and interrupt to show bootmenu
2. Call "[R]: Review TFTP parameters.", check TFTP parameters and
connect computer to "Image download port" in the parameters
3. Prepare TFTP server with the parameters obtained above
4. Rename OpenWrt initramfs image to "image.out" and put to TFTP
directory
5. Call "[T]: Initiate TFTP firmware transfer." to download initramfs
image from TFTP server
6. Type "r" key when the following message is showed, to boot initramfs
image without flashing to spi-nor flash
"Save as Default firmware/Backup firmware/Run image without saving:[D/B/R]?"
7. On initramfs image, backup mtd if needed
minimum:
- "firmware-info"
- "kernel"
- "rootfs"
7. On initramfs image, upload sysupgrade image to the device and perform
sysupgrade
8. Wait ~200 seconds to complete flashing and rebooting.
If the device is booted with stock firmware, login to bootmenu and
call "[B]: Boot with backup firmware and set as default." to set the
first OS image as default and boot it.
Notes:
- All "SPEED" LEDs(Green/Amber) of LAN and 1000M "SPEED" LEDs(Green) of
WAN1/2 are connected to GPIO expander. There is no way to indicate
link speed of networking device on Linux Kernel/OpenWrt, so those LEDs
cannot be handled like stock firmware.
On OpenWrt, use netdev(link) trigger instead.
- Both colors of Bi-color LEDs on the front panel cannot be turned on at
the same time.
- "PWR" and "Logo" LEDs are connected to power source directly.
- The following partitions are added for OpenWrt.
These partitions are contained in "uboot" partition (0x0-0x1fffff) on
stock firmware.
- "firmware-info"
- "dtb"
- "u-boot-env"
- "board-info"
Image header for bootmenu tftp:
0x0 - 0xf : ?
0x10 - 0x2f : Image Name
0x30 - 0x17f: ?
0x180 - 0x183: Kernel Offset*
0x184 - 0x187: Kernel Length*
0x188 - 0x18b: RootFS Offset (ext2)*
0x18c - 0x18f: RootFS Length (ext2)*
0x190 - 0x193: DTB Offset
0x194 - 0x197: DTB Length
0x198 - 0x19b: Data Offset (jffs2)
0x19c - 0x19f: Data Length (jffs2)
0x1a0 - 0x1ff: ?
*: required for initramfs image
MAC addresses:
(eth0): 70:4C:A5:xx:xx:7C (board-info, 0xd880 (hex))
WAN 1 : 70:4C:A5:xx:xx:7D
WAN 2 : 70:4C:A5:xx:xx:7E
LAN 1 : 70:4C:A5:xx:xx:7F
LAN 2 : 70:4C:A5:xx:xx:80
LAN 3 : 70:4C:A5:xx:xx:81
LAN 4 : 70:4C:A5:xx:xx:82
LAN 5 : 70:4C:A5:xx:xx:83
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
The Buffalo LinkStation LS220DE is a dual bay NAS, based on Marvell
Armada 370
Hardware:
SoC: Marvell Armada 88F6707
CPU: Cortex-A9 800 MHz, 1 core
Flash 1: SPI-NOR 1 MiB (U-Boot)
Flash 2: NAND 512 MiB (OS)
RAM: DDR3 256 MiB
Ethernet: 1x 1GbE
USB: 1x 2.0
SATA: 2x 3Gb/s
LEDs/Input: 5x / 2x (1x button, 1x slide-switch)
Fan: 1x casing
Flash instructions, from hard drive:
1. Get access to the "boot" partition at the hard drive where the stock
firmware is installed. It can be done with acp-commander or by
plugging the hard drive to a computer.
2. Backup the stock uImage:
mv /boot/uImage.buffalo /boot/uImage.buffalo.bak
3. Move and rename the Openwrt initramfs image to the boot partition:
mv openwrt-initramfs-kernel.bin /boot/uImage.buffalo
4. Power on the Linkstation with the hardrive inside. Now Openwrt will
boot, but still not installed.
5. Connect via ssh to OpenWrt:
ssh root@192.168.1.1
6. Rename boot files inside boot partition
mount -t ext3 /dev/sda1 /mnt
mv /mnt/uImage.buffalo /mnt/uImage.buffalo.openwrt.bak
mv /mnt/initrd.buffalo /mnt/initrd.buffalo.bak
7. Format ubi partitions at the NAND flash ("kernel_ubi" and "ubi"):
ubiformat /dev/mtd0 -y
ubidetach -p /dev/mtd1
ubiformat /dev/mtd1 -y
8. Flash the sysupgrade image:
sysupgrade -n openwrt-squashfs-sysupgrade.bin
9. Wait until it finish, the device will reboot with OpenWrt installed
on the NAND flash.
Restore the stock firmware:
1. Take the hard drive used for the installation and restore boot backup
files to their original names:
mount -t ext3 /dev/sda1 /mnt
mv /mnt/uImage.buffalo.bak /mnt/uImage.buffalo
mv /mnt/initrd.buffalo.bak /mnt/initrd.buffalo
2. Boot from the hard drive and perform a stock firmware update using
the Buffalo utility. The NAND will be restored to the original
state.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
Assign fan with 4 active cooling levels to be used for the main CPU as
well as external SerDes units.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Armada 7040 uses a rather small 15MB memory window for every PCI adapter,
however this is not sufficient for Qualcomm QCA6390 802.11ax cards that
are shipped along with the OpenWrt WLAN model of MOCHAbin as ath11k
requires at least 16MB of memory.
So, similar to what MACCHIATOBin has been doing for years, lets move
to using the second PCIe 2 memory window and expand it to 128MB to
make it future proof.
This has been already sent upstream [1].
[1] https://lore.kernel.org/linux-arm-kernel/20230219121418.1395401-1-robert.marko@sartura.hr/
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
The GL-MV1000 ships with a 16MB spi-nor flash, containing a copy of the stock GL.iNet firmware.
Add the corresponding flash areas, so our view matches the one of the in-flash stock firmware.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Add support for Methode euroDPU which is based on uDPU but does not
have a second SFP cage, instead of which a Maxlinear G.hn IC is used.
PHY mode is set to 1000Base-X despite Maxlinear IC being capable of
2500Base-X since until 5.15 support for mvebu is available trying to use
2500Base-X will cause buffer overruns for which the fix is not easily
backportable.
Installation instructions:
1. Boot the FIT initramfs image (openwrt-mvebu-cortexa53-methode_edpu-initramfs.itb)
2. sysupgrade using the openwrt-mvebu-cortexa53-methode_edpu-firmware.tgz
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
uDPU DTS has pending upstream fixups, so backport those as well as split
the DTS into a DTSI and DTS in preparation for euroDPU support which
uses uDPU as the base.
Ethernet aliases have not yet been sent upstream but will be soon in order
for U-boot to set the correct MAC on both ethernet interfaces instead of
just one.
Since U-boot environment now has its own partition, update the envtools
config script to search for it instead.
Patch hardcoding PHY mode is also not applicable anymore, so drop it and
set in the uDPU DTS directly.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
On this device, two of the three defined MTD partitions are
automatically set to read-only, since they do not end at an
erase/write block boundary.
In particular, the only partition remaining writable is the
one holding the u-boot bootloader.
Mark all of the partitions read-only, at least until a better
understanding of why the layout has been laid out this way is
gained.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Fixes Ethernet link status on all ports and makes 2.5G ports usable
in 2.5G and 1G full-duplex mode.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Wire up MCU driver for LEDs, fan and temperature sensor, and add
GPIO reset button just like on the M902 also on the Puzzle M901.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Backport MFD driver for communicating with the on-board MCU found on
IEI World Puzzle appliances.
Improve the driver to support multiple LEDs, apply a default state and
let MCU take care of blinking if timing is within supported range.
Wire up LEDs and fan for Puzzle M902 in device tree.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
LED labels got reversed by accident, so fix it to the usual color:led_name format.
Fixes: 78cf3e53b1 ("mvebu: add Globalscale MOCHAbin")
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
[add Fixes:]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Globalscale MOCHAbin is a Armada 7040 based development board.
Specifications:
* Armada 7040 Quad core ARMv8 Cortex A-72 @ 1.4GHz
* 2 / 4 / 8 GB of DDR4 DRAM
* 16 GB eMMC
* 4MB SPI-NOR (Bootloader)
* 1x M.2-2280 B-key socket (for SSD expansion, SATA3 only)
* 1x M.2-2250 B-key socket (for modems, USB2.0 and I2C only)
* 1x Mini-PCIe 3.0 (x1, USB2.0 and I2C)
* 1x SATA 7+15 socket (SATA3)
* 1x 16-pin (2×8) MikroBus Connector
* 1x SIM card slot (Connected to the mini-PCIe and both M.2 slots)
* 2x USB3.0 Type-A ports via SMSC USB5434B hub
* Cortex 2x5 JTAG
* microUSB port for UART (PL2303GL/PL2303SA onboard)
* 1x 10G SFP+
* 1x 1G SFP (Connected to 88E1512 PHY)
* 1x 1G RJ45 with PoE PD (Connected to 88E1512 PHY)
* 4x 1G RJ45 ports via Topaz 88E6141 switch
* RTC with battery holder (SoC provided, requires CR2032 battery)
* 1x 12V DC IN
* 1x Power switch
* 1x 12V fan header (3-pin, power only)
* 1x mini-PCIe LED header (2x0.1" pins)
* 1x M.2-2280 LED header (2x0.1" pins)
* 6x Bootstrap jumpers
* 1x Power LED (Green)
* 3x Tri-color RGB LEDs (Controllable)
* 1x Microchip ATECC608B secure element
Note that 1G SFP and 1G WAN cannot be used at the same time as they are in
parallel connected to the same PHY.
Installation:
Copy dtb from build_dir to bin/ and run tftpserver there:
$ cp ./build_dir/target-aarch64_cortex-a72_musl/linux-mvebu_cortexa72/image-armada-7040-mochabin.dtb bin/targets/mvebu/cortexa72/
$ in.tftpd -L -s bin/targets/mvebu/cortexa72/
Connect to the device UART via microUSB port and power on the device.
Power on the device and hit any key to stop the autoboot.
Set serverip (host IP) and ipaddr (any free IP address on the same subnet), e.g:
$ setenv serverip 192.168.1.10 # Host
$ setenv ipaddr 192.168.1.15 # Device
Set the ethernet device (Example for the 1G WAN):
$ setenv ethact mvpp2-2
Ping server to confirm network is working:
$ ping $serverip
Using mvpp2-2 device
host 192.168.1.15 is alive
Tftpboot the firmware:
$ tftpboot $kernel_addr_r openwrt-mvebu-cortexa72-globalscale_mochabin-initramfs-kernel.bin
$ tftpboot $fdt_addr_r image-armada-7040-mochabin.dtb
Boot the image:
$ booti $kernel_addr_r - $fdt_addr_r
Once the initramfs is booted, transfer openwrt-mvebu-cortexa72-globalscale_mochabin-squashfs-sdcard.img.gz
to /tmp dir on the device.
Gunzip and dd the image:
$ gunzip /tmp/openwrt-mvebu-cortexa72-globalscale_mochabin-squashfs-sdcard.img.gz
$ dd if=/tmp/openwrt-mvebu-cortexa72-globalscale_mochabin-squashfs-sdcard.img of=/dev/mmcblk0 && sync
Reboot the device.
Hit any key to stop the autoboot.
Reset U-boot env and set the bootcmd:
$ env default -a
$ setenv bootcmd 'load mmc 0 ${loadaddr} boot.scr && source ${loadaddr}'
Optionally I would advise to edit the console env variable to remove earlycon as that
causes the kernel to never use the driver for the serial console.
Earlycon should be used only for debugging before the kernel can configure the console
and will otherwise cause various issues with the console.
$ setenv console 'console=ttyS0,115200'
Save and reset
$ saveenv
$ reset
OpenWrt should boot from eMMC now.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Define nvmem-cells and convert mtd-mac-address to nvmem implementation.
The conversion is done with an automated script.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
The CLK125 output pin at the ethernet PHY is connected via capacitor to
GND and nowhere else. Disable it. Also tune the LED masks.
The MPP56 and MPP60 pins at the SoC are conected to the μPD720202 USB3.0
chip:
- MPP56: wired to PCIe CLKREQ# (out)
- MPP60: wired to PCIe RESET# (in)
Configure the pcie pinmux for these pins.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
The original GL.iNet firmware has two different mac addresses in the
factory/art partition. The first one is for the WAN interface only and the
second one is for both lan0 and lan1.
But the original submission for OpenWrt didn't initialize the mac
addresses of the LAN ports for the DSA device at all. The ethernet mac
address was then used for all DSA ports.
Fixes: 050c24f05c ("mvebu: add support for GL.iNet GL-MV1000")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
The original patch to support this device advertised support for the reset
button and the "switch" in the commit message. But neither were actually
integrated in the device tree or documented anywere.
The button itself is now used to trigger a reset (as described in the
official GL.iNet documentation). The switch itself is registered as BTN_0
like other devices from GL.iNet in ath79.
Fixes: 050c24f05c ("mvebu: add support for GL.iNet GL-MV1000")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
venom has a 3MB kernel partition as specified by the DTS.
3MB is not sufficient for building with many kernel modules or newer
kernel versions.
venom uboot however as set from factory will load up to 6MB.
This can be observed by looking a uboot log:
NAND read: device 0 offset 0x900000, size 0x600000
6291456 bytes read: OK
and from uboot environment variables:
$ fw_printenv | grep "priKernSize";
priKernSize=0x0600000
Resize the root partitions from 120MB to 117MB to let kernel expand
into it another 3MB.
And set kernel target size to 6MB.
Lastly set the kernel-size-migration compatibility version on venom to
prevent sysupgrading without first reinstalling from a factory image.
Signed-off-by: Tad Davanzo <tad@spotco.us>
Make some cosmetic changes in the Buffalo LinkStation LS421DE NAS:
- Delete pointless #xxx-cells
- bootargs: replace earlyprintk with earlycon and remove unneeded args.
- Separate pinmux nodes with empty lines.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
This patch enables LED support for the GL.iNet GL-MV1000
Signed-off-by: Jeff Collins <jeffcollins9292@gmail.com>
[add SPDX identifier on new file, add aliases, minor cosmetic issues]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
The thermal zones kernel documentation is misleading, we cannot use more
than one sensor in a thermal zone node.
Furthermore the drivetemp driver for some reason it only catches one
sensor from the hard drives array (the first available).
In the Buffalo Linkstation LS421DE board there is also a sensor at the
ethernet phy chip that can also be monitored. Very useful to stop the fan
when there are no hard drives in the bays.
(It might be also possible to add the CPU sensor, but it requires kernel
patching for registering the sensor via device tree, using the function:
devm_thermal_zone_of_sensor_register)
Fix the thermal zones to use only one sensor per node and add the ethernet
phy sensor. Also adjust the hdd temperatures to be more conservative for
a mechanical hard drive.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
The Buffalo Linkstation LS421DE comes with a Ricoh RS5C372A real time
clock. This RTC has the INTRA pin connected to the power management
circuit, allowing to wake up the device from the power off state when an
alarm is scheduled.
Add the "wakeup-source" property in the RTC dts node to allow the use
of the alarm.
Example of use, the device is powered off and it comes to life after 5
minutes:
echo $(expr $(date '+%s') + 60 * 5) > /sys/class/rtc/rtc0/wakealarm
poweroff
This feature isn't available in the stock firmware.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
The Buffalo Linkstation LS421DE isn't able to enable the Level 2 cache
(AKA Aurora cache). As of result of this, the throughput is about half of
the expected, e.g when doing network data transfers.
Fix it by adding the broken-idle property in the coherency fabric node.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
This patch adds support for Globalscale ESPRESSObin-Ultra. Device uses
the same Armada-3720 SoC with extended hardware support.
- SoC: Armada-3720
- RAM: 1 GB DDR4
- Flash: 4MB SPI NOR (mx25u3235f) + 8 GB eMMC
- Ethernet: Topaz 6341 88e6341 (4x GB LAN + 1x WAN with 30W PoE)
- WiFI: 2x2 802.11ac Wi-Fi marvell (88w8997 PCIe+USB)
- 1x USB 2.0 port
- 1x USB 3.0 port
- 1x microSD slot
- 1x mini-PCIe slot (USB [with nano-sim slot])
- 1x mini-USB debug UART
- 1x RTC Clock and battery
- 1x reset button
- 1x power button
- 4x LED (RGBY)
- Optional 1x M.2 2280 slot
** Installation **
Copy dtb from build_dir to bin/ and run tftpserver there:
$ cp ./build_dir/target-aarch64_cortex-a53_musl/linux-mvebu_cortexa53/
linux-5.4.65/arch/arm64/boot/dts/marvell/armada-3720-espressobin-ultra.dtb
bin/targets/mvebu/cortexa53/
$ in.tftpd -L -s bin/targets/mvebu/cortexa53/
Connect to the device UART via microUSB port on the back side and power on the device.
Power on the device and hit any key to stop the autoboot.
Set serverip (host IP) and ipaddr (any free IP address on the same subnet), e.g:
$ setenv serverip 192.168.1.10 # Host
$ setenv ipaddr 192.168.1.15 # Device
Ping server to confirm network is working:
$ ping $serverip
Using neta@30000 device
host 192.168.1.15 is alive
Tftpboot the firmware:
$ tftpboot $kernel_addr_r openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-initramfs-kernel.bin
$ tftpboot $fdt_addr_r armada-3720-espressobin-ultra.dtb
Set the console and boot the image:
$ setenv bootargs $console
$ booti $kernel_addr_r - $fdt_addr_r
Once the initramfs is booted, transfer openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img.gz
to /tmp dir on the device.
Gunzip and dd the image:
$ gunzip /tmp/openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img.gz
$ dd if=/tmp/openwrt-mvebu-cortexa53-globalscale_espressobin-ultra-squashfs-sdcard.img of=/dev/mmcblk0 && sync
Reboot the device.
Signed-off-by: Vladimir Vid <vladimir.vid@sartura.hr>
SPDX moved from GPL-2.0 to GPL-2.0-only and from GPL-2.0+ to
GPL-2.0-or-later. Reflect that in the SPDX license headers.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Compile the Linkstation poweroff module for the Buffalo LS421DE.
Without this driver the device remains forever halted if a power off
command is executed.
The driver will also allow to use the WoL feature, which wasn't availabe
in the stock firmware.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
The Buffalo Linkstation LS421DE has a chassis fan for cooling two internal
hard drives. Currently there is no control over this fan, running always
at fixed medium speed.
With the recent jump to the kernel 5.4, now we can monitor the hard drive
temperature and control the fan with thermal zones.
Install the kmod-hwmon-drivetemp module and wire up a thermal zone on the
dts file to allow automatic fan control by the kernel.
Tested succesfully using a single Crucial BX500 SSD drive.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
- Delete useless HDD presence inputs: they aren't buttons, and probably
they are outputs in the stock firmware.
- Change the Function Button keycode: the current one isn't mapped by
the kernel module.
- Use the recommended property names for the ethernet stuff.
- Add missing i2c pinmux.
- Minor cosmetic changes.
Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
The DTS files in files-4.19 and files-5.4 are exactly identical
except for one file (armada-3720-uDPU.dts), which is only present
for 4.19, as it has been upstreamed before 5.4.
Since there is no point in maintaining all these identical files
twice, this patch moves them to the "files" directory, only keeping
the named exception to files-4.19.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This is needed to prevent copying it into kernel 4.14.
These device tree files are already integrated into kernel 4.14 and we
would like to use the upstream versions only.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Change dts file to add default sata trigger to sata led.
Backport upstream accepted patch to add sata trigger to device tree
source files already upstreamed.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
[backport upstream accepted patch]
Signed-off-by: Mathias Kresin <dev@kresin.me>
The marvell,88e6352 and marvell,88e6172 compatible strings are used in
target/linux/generic/files/drivers/net/phy/mvsw61xx.c. No idea why grep
missed them when I searched for them.
Thanks to Syrone Wong for noticing and reporting my mistake.
Signed-off-by: Mathias Kresin <dev@kresin.me>
Fixes invalid device tree parameters.
Drop the mvsw61xx node used in mvebu device tree source files. It looks
like some kind of ethernet switch cargo cult. Neither the
marvell,88e6352 nor the marvell,88e6172 compatible strings can be found
in any LEDE file or in the kernel sources.
Signed-off-by: Mathias Kresin <dev@kresin.me>
