* set correct clocks for PWM to work.
* MT7986 PWM does have the 26MHz-clock-select, set that in patch
* drop useless 'passive' trip point in thermal zone
* extend pwm-fan to have 3 active operating points
* set reasonable trip points in thermal zone
* invert pwm-fan operating points and set shorter period to allow
less noisy operation of the PWM fan of the BPi-R3.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Setup thermal zone, select pins and enabled drivers for I2C (on 26-pin
GPIO bank) and PWM (1x fan and 1x GPIO bank).
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Hardware:
SoC: MediaTek MT7629 Cortex-A7 (ARMv7 1.25GHz, Dual-Core)
RAM: DDR3 128MB
Flash: Macronix MX35LF1GE4AB (SPI-NAND 128MB)
WiFi: MediaTek MT7761N (2.4GHz) / MediaTek MT7762N (5GHz) - no driver
Ethernet: SoC (WAN) / MediaTek MT7531 (LAN x4)
UART: [GND, RX, TX, 3.3V] (115200)
Installation:
- Flash recovery image with TFTP recovery
Revert to stock firmware:
- Flash stock firmware with TFTP recovery
TFTP Recovery method:
1. Unplug the router
2. Hold the reset button and plug in
3. Release when the power LED stops flashing and go off
4. Set your computer IP address manually to 192.168.0.x / 255.255.255.0
5. Flash image with TFTP client to 192.168.0.1
Signed-off-by: Yoonji Park <koreapyj@dcmys.kr>
MT7915 requires an additional antenna for background radar scanning.
Disable this feature in the following devices that do not have a
separate DFS antenna:
linksys,e8450
ruijie,rg-ew3200gx-pro
xiaomi,redmi-router-ax6s
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
The RGB LED of the UniFi 6 LR v1 doesn't work when using the Openwrt-
built U-Boot. This is because the vendor loader resets the ledbar
controller while our U-Boot doesn't care.
Add reset-gpio so the ledbar driver in Linux will always reset the
ledbar controller.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The GPIO used for the RST button is also used for PCIe-CLKREQ signal.
Hence it cannot be used as button signal if PCIe is also used.
Wire up WPS button to serve as KEY_RESTART in Linux and "reset" button
in U-Boot.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Make sure the compatible string in DTS matches the now v1/v2
differentiated board name in target/linux/mediatek/image/mt7622.mk.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The Bananapi BPi-R3 is a development router board built around the
MediaTek Filogic 830 (MT7986A) SoC.
The board can boot either from microSD, SPI-NAND, SPI-NOR or eMMC.
Only either SPI-NAND or SPI-NOR can be used at the same time, also only
either microSD or eMMC can be used. The various storage options can be
selected using small SMD switches on the board.
Specs:
* MediaTek MT7986A (Filogic 830) 4x ARM Cortex A53
* 4T4R 2.4G 802.11bgnax (MT7975N)
* 4T4R 5G 802.11anac/ax (MT7975P)
* 2 GB DDR4 RAM
* 8 GB eMMC
* 128 MB SPI-NAND flash
* 32 MB SPI-NOR flash
* on-board MT7531 GbE switch
* 2x SFP+ (1 GbE / 2.5 GbE)
* 5x GbE network port
* miniPCIe slot (only USB 2.0 connected)
* uSIM slot (connected to miniPCIe interface)
* M.2 KEY-E PCIe interface (PCIe x2)
* microSD card interface
* 26 PIN GPIO
Hardware details: https://wiki.banana-pi.org/Banana_Pi_BPI-R3
Working:
* all 4 boot methods incl. installation via U-Boot, sysupgrade, ...
* copper LAN and WAN ports
* SFP1 (connected to gmac1, eth1 in Linux)
* WiFi
* LEDs
* Buttons
* PSTORE/ramoops based dual-boot
Not Working (missing driver features):
* SFP2 (connected to MT7531 switch)
Untested:
* M.2/NGFF slot (PCIe x2)
* mPCIe slot (USB 2.0 + SIM)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
On boot, kernel log complains no vbus supply is found:
`xhci-mtk 1a0c0000.usb: supply vbus not found, using dummy regulator`
so add the dts node entries to solve the issue
Signed-off-by: Andrew Sim <andrewsimz@gmail.com>
The recent differentiation between v1 and v2 of the UniFi 6 LR added
support for the v2 version which has GPIO-controlled LEDs instead of
using an additional microcontroller to drive an RGB led.
The polarity of the white LED, however, was inverted and the default
states didn't make a lot of sense after all. Fix that.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
There is not RTC battery connected to the SoC of the UniFi 6 LR board.
Disable the RTC to prevent the system coming up with time set to
2000-01-01 00:00:00 after each reboot.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Add targets:
* Ubiquiti UniFi 6 LR v2
* Ubiquiti UniFi 6 LR v2 (U-Boot mod)
This target does not have a RGB led bar like v1 did
Used target/linux/ramips/dts/mt7621_ubnt_unifi.dtsi as inspiration
The white dome LED is default-on, blue will turn on when the system is
in running state
Signed-off-by: Henrik Riomar <henrik.riomar@gmail.com>
based on current ubnt_unifi-6-lr-ubootmod
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[added SUPPORTED_DEVICES for compatibility with existing setups]
Signed-off-by: Henrik Riomar <henrik.riomar@gmail.com>
Based on current mt7622-ubnt-unifi-6-lr, this is a preparation for
adding a v2 version of this target
* v1 - with led-bar
* v2 - two simple GPIO connected LEDs (in later commits)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[added SUPPORTED_DEVICES for compatibility with existing setups]
Signed-off-by: Henrik Riomar <henrik.riomar@gmail.com>
This patch implements the spi-nand controller driver as an ECC-capable
spi-mem controller to use the upstream SPI-NAND driver.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Also known as the "Xiaomi Router AX3200" in western markets,
but only the AX6S is widely installation-capable at this time.
SoC: MediaTek MT7622B
RAM: DDR3 256 MiB (ESMT M15T2G16128A)
Flash: SPI-NAND 128 MiB (ESMT F50L1G41LB or Gigadevice GD5F1GQ5xExxG)
WLAN: 2.4/5 GHz 4T4R
2.4 GHz: MediaTek MT7622B
5 GHz: MediaTek MT7915E
Ethernet: 4x 10/100/1000 Mbps
Switch: MediaTek MT7531B
LEDs/Keys: 2/2 (Internet + System LED, Mesh button + Reset pin)
UART: Marked J1 on board VCC RX GND TX, beginning from "1". 3.3v, 115200n8
Power: 12 VDC, 1.5 A
Notes:
U-Boot passes through the ethaddr from uboot-env partition,
but also has been known to reset it to a generic mac address
hardcoded in the bootloader.
However, bdata is also populated with the ethernet mac addresses,
but is also typically never written to. Thus this is used instead.
Installation:
1. Flash stock Xiaomi "closed beta" image labelled
'miwifi_rb03_firmware_stable_1.2.7_closedbeta.bin'.
(MD5: 5eedf1632ac97bb5a6bb072c08603ed7)
2. Calculate telnet password from serial number and login
3. Execute commands to prepare device
nvram set ssh_en=1
nvram set uart_en=1
nvram set boot_wait=on
nvram set flag_boot_success=1
nvram set flag_try_sys1_failed=0
nvram set flag_try_sys2_failed=0
nvram commit
4. Download and flash image
On computer:
python -m http.server
On router:
cd /tmp
wget http://<IP>:8000/factory.bin
mtd -r write factory.bin firmware
Device should reboot at this point.
Reverting to stock:
Stock Xiaomi recovery tftp that accepts their signed images,
with default ips of 192.168.31.1 + 192.168.31.100.
Stock image should be renamed to tftp server ip in hex (Eg. C0A81F64.img)
Triggered by holding reset pin on powerup.
A simple implementation of this would be via dnsmasq's
dhcp-boot option or using the vendor's (Windows only)
recovery tool available on their website.
Signed-off-by: Richard Huynh <voxlympha@gmail.com>
X32 Pro is another product name for it in the Chinese market.
Specifications:
- SoC: MT7622B
- RAM: 256MB
- Flash: XMC XM25QH128C or Winbond WQ25Q128JVSQ 16MB SPI NOR
- Ethernet: 5x1GbE
- Switch: MT7531BE
- WiFi: 2.4G: MT7622 5G: MT7915AN+MT7975AN
- 3LEDs: System LED(blue) + Mesh LED(green) + Mesh LED(red)
- 2Keys: Mesh button + Reset button
- UART: Marked J19 on board. 3.3v, 115200n1
- Power: 12V 2.5A
MAC addresses as verified by OEM firmware:
use address source
WAN *:F4 ethaddr@product_info
LAN *:F5
5g *:F6
2g *:F7
Flash instruction:
1. Serve the initramfs.img using a TFTP server with address 10.10.10.3.
2. Interrupt the uboot startup process via UART.
3. Select "System Load Linux to SDRAM via TFTP" item.
4. (important) Back up firmware(mtd7) partitions with:
dd if=/dev/mtd7 of=/tmp/firmware.bin
and then download the firmware.bin image via SCP.
5. Flash the OpenWrt sysupgrade firmware.
Recovery stock firmware:
1. Transfer the firmware.bin image to the device.
2. Flash the image with:
mtd write firmware.bin firmware
Signed-off-by: Langhua Ye <y1248289414@outlook.com>
Turns out the MT7531 switch IRQ line is connected to GPIO#53 just like
on the BPi-R64, so this seems to be part of the reference design and
will probably apply to most MT7622+MT7531 boards.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Append 'earlycon=uart8250,mmio32,0x11004000' to the boot arguments
embedded in device-tree in order to enable early console on the
UniElec U7623 board when using the vendor/stock bootloader.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Users of older OpenWrt versions need sysupgrade using the *emmc.img.gz
file once which will upgrade U-Boot and switch to the new image layout.
Users of the vendor firmware need to first flash the legacy image to
then sunsequently carry out a full-flash upgrade.
Alternatively the board can also be flashed using MediaTek's
proprietary SP Flash Tool.
Configuration as well as persistent MAC address will be lost once at
this point and you will have to redo (or restore) all configuration
manually. To restore the previous persistent MAC address users may set
it manually using
fw_setenv ethaddr 00:11:22:33:44:55
For future upgrades once running OpenWrt past this commit, the usual
*sysupgrade.itb file can be used.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
* Use serial0 instead of serial2 for the only serial port
* Add LED aliases
* Add ethernet0 alias to inherit ethaddr from U-Boot env
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Limit bmt remapping range to cover everything up to and including the kernel image,
use the rest of the flash area for ubi.
Fix partition table and sysupgrade support
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The Unielec U7623 doesn't have a physical power button; I think it's hard
wired so that it turns on automatically when power is applied (unlike the
Banana Pi R2 which is a pain).
So the 'reset on long press of power button' behaviour that we get when
we enable the PMIC keyboard driver is kind of unhelpful. Disable it.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Fixes: 0d3f3323a2 ("mediatek: mt7623: enable more hardware features")
This change enables proper Ethernet link status and speed reporting on
the Ubiquiti UniFi 6 LR access point:
mtk_soc_eth 1b100000.ethernet eth0: PHY [mdio-bus:08] driver [Aquantia AQR112C] (irq=POLL)
mtk_soc_eth 1b100000.ethernet eth0: configuring for phy/2500base-x link mode
mtk_soc_eth 1b100000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Specifications:
- SoC: MT7622
- RAM: 512MB
- Flash: MX35LF1GE4AB 128MB SPI NAND
- Ethernet: RTL8367S 5x1GbE
- WiFi: 2.4G: MT7622 5G: MT7615N x2
- Other ports: USB3.0 x1
Flash instruction:
*important*: upgrade vendor firmware to at least V7.1cu.643_B20200521
1. hold the reset button and power on the device. wait for about 10s
before releasing the reset button.
2. upload sysupgrade.bin via u-boot recovery page on http://192.168.1.1
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
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>
This updates the patches to match the versions included in the mtd
subsystem for the next Linux kernel version.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
/dts-v1/; must only be specified once.
Fixes: e887049fbb ("mediatek: add alternative bootchain variant
for UniFi 6 LR")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Builds images for the Ubiquiti Network UniFi 6 LR device running the
U-Boot build added by the previous commits.
Everything but MTD partitions is moved to dtsi.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
There is an ASMedia ASM1480 PCIe switch found on mt7622-rfb1 and the
BPi-R64, allowing the user to switch between SATA and PCIe1 which share
the same pins on the SoC.
This chip is not present on the Linksys E8450, it doesn't have SATA.
Remove definitions for GPIO90 from DTSI to prevent it from being
copy&pasted or otherwise causing confusion.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This fixes writing to the U-Boot environment by making the partition
writable and setting the correct flash sector size of 128K.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This adds support for the Buffalo WSR-2533DHP2.
The device uses the Broadcom TRX image format with a special magic. To
be able to boot the images or load them they have to be wrapped with
different headers depending how it is loaded.
There are multiple ways to install OpenWrt on this device.
Boot ramdisk from U-Boot
----------------------------
This will load the image and not write it into the flash.
1. Stop boot menu with "space" key
2. Select "System Load Linux to SDRAM via TFTP."
3. Load this image:
openwrt-mediatek-mt7622-buffalo_wsr-2533dhp2-initramfs-kernel.bin
4. The system boots the image
Write to flash from U-Boot
-----------------------------
This will load the image over tftp and directly write it into the flash.
1. Stop boot menu with "space" key
2. Select "System Load Linux Kernel then write to Flash via TFTP."
3. Load this image:
openwrt-mediatek-mt7622-buffalo_wsr-2533dhp2-squashfs-factory-uboot.bin
4. The system writes this image into the flash and boots into it.
Write to flash from Web UI
-----------------------------
This will load the image over over the Web UI and write it into the flash
1. Open the Web UI
2. Go to "管理" -> "ファームウェア更新"
3. Select "ローカルファイル指定" and click "更新実行"
4. Load this image:
openwrt-mediatek-mt7622-buffalo_wsr-2533dhp2-squashfs-factory.bin
5. The system writes this image into the flash and boots into it.
Specifications
-------------------
* SoC: MT7622 (4x4 2.4 GHz Wifi)
* Wifi: MT7615 (4x4 5 GHz Wifi)
* Flash: Winbond W29N01HZ 128MB SLC NAND
* RAM 256MB
* Ethernet: Realtek RTL8367S (5 x 1GBit/s, SoC via 2.5GBit/s)
Co-Developed-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
**What's new**
* Bring support for the Bananapi BPi-R64 to the level desirable for
a nice hackable routerboard.
* Use ARM Trusted Firmware A from source. (goodbye binary preloader)
* Use Das U-Boot from source. (see previous commit)
* Assemble SD-card image using OpenWrt image-commands.
(no gen_sd_cruz_foo.sh added, this is not Raspbian)
* Updated kernel options to support root filesystem.
* Updated DTS to match OpenWrt LAN ports, known LEDs, buttons, ...
* Detect root device, handle sysupgrade, config restore, ...
* Wire up (known) LEDs and buttons in OpenWrt-fashion.
* Build one set of images from SD-card and eMMC.
* Hopefully provide a good example of how things can be done right
from scratch.
**Installation and images**
* Have an empty SD-card at hand
* Write stuff to the card, as root (card device is /dev/mmcblkX)
- write header, gpt, bl2, atf, u-boot and recovery kernel:
`cat *bpi-r64-boot-sdcard.img *bpi-r64-initramfs-recovery.fit > /dev/mmcblkX`
- rescan partitions:
`blockdev --rereadpt /dev/mmcblkX`
- write main system to production partition:
`cat *bpi-r64-squashfs-sysupgrade.fit > /dev/mmcblkXp5`
* Installation to eMMC works using SD-card bootloader via TFTP
When running OpenWrt of SD-card, issue this to trigger installation
to eMMC:
`fw_setenv bootcmd run emmc_init`
Be prepared to serve the content of bin/targets/mediatek/mt7622 on
TFTP server address 192.168.1.254.
**What's missing**
* The red LED is always on, probably a hardware bug.
* AHCI (probably needs DTS changes)
* Ship SD-card image ready with every needed for eMMC install.
* The eMMC has a second, currently unused boot partition. This would
be ideal to store the WiFi EEPROM and Ethernet MAC address(es).
@sinovoip ideas?
Thanks to Thomas Hühn @thuehn for providing the hardware!
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The vendor flash layout of the Linksys E8450 is problematic as it uses
the SPI-NAND chip without any wear-leveling while at the same time
wasting a lot of space for padding.
Use an all-UBI layout instead, storing the kernel+dtb+squashfs in
uImage.FIT standard format in UBI volume 'fit', the read-write
overlay in UBI volume 'rootfs_data' as well as reduntant U-Boot
environments 'ubootenv' and 'ubootenv2', and a 'recovery'
kernel+dtb+initramfs uImage.FIT for dual-boot.
** WARNING **
THIS PROCEDURE CAN EASILY BRICK YOUR DEVICE PERMANENTLY IF NOT CARRIED
OUT VERY CAREFULLY AND EXACTLY AS DESCRIBED!
Step 0
* Configure your PC to have the static IPv4 address 192.168.1.254/24
* Provide bin/targets/mediatek/mt7622 via TFTP
Now continue EITHER with step 1A or 1B, depending on your preference
(and on having serial console wired up or not).
Step 1A (Using the vendor web interface (or non-UBI OpenWrt install))
In order to update to the new bootloader and UBI-based firmware,
use the web browser of your choice to open the routers web-interface
accessible on http://192.168.1.1
* Navigate to
'Configuration' -> 'Administration' -> 'Firmware Upgrade'
* Upload the file
openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery.itb
and proceed with the upgrade.
* Once OpenWrt comes up, use SCP to upload the new bootloader files to
/tmp on the router:
*-mt7622-linksys_e8450-ubi-preloader.bin
*-mt7622-linksys_e8450-ubi-bl31-uboot.fip
* Connect via SSH as you will now need to replace the bootloader in
the Flash.
ssh root@192.168.1.1
(the usual warnings)
* First of all, backup all the flash now:
for mtd in /dev/mtdblock*; do
dd if=$mtd of=/tmp/$(basename $mtd);
done
* Then use SCP to copy /tmp/mtdblock* from the router and keep them
safe. You will need them should you ever want to return to the
factory firmware!
* Now flow the uploaded files:
mtd -e /dev/mtd0 write /tmp/*linksys_e8450-ubi-preloader.bin /dev/mtd0
mtd -e /dev/mtd1 write /tmp/*linksys_e8450-ubi-bl31-uboot.fip /dev/mtd1
If and only if both writes look like the completed successfully
reboot the router. Now continue with step 2.
Step 1B (Using the vendor bootloader serial console)
* Use the serial to backup all /dev/mtd* devices before using the
stock firmware (you got root shell when connected to serial).
* Then reboot and select 'U-Boot Console' in the boot menu.
* Copy the following lines, one by one:
tftpboot 0x40080000 openwrt-mediatek-mt7622-linksys_e8450-ubi-preloader.bin
tftpboot 0x40100000 openwrt-mediatek-mt7622-linksys_e8450-ubi-bl31-uboot.fip
nand erase 0x0 0x180000
nand write 0x40080000 0x0 0x180000
reset
Now continue with step 2
Step 2
Once the new bootchain comes up, the loader will initialize UBI and the
ubootenv volumes. It will then of course fail to find any bootable
volume and hence resort to load kernel via TFTP from server
192.168.1.254 while giving itself the address 192.168.1.1
The requested file is called
openwrt-mediatek-mt7622-linksys_e8450-ubi-initramfs-recovery.itb
and your TFTP server should provide exactly that :)
It will be written to UBI as recovery image and booted.
You can then continue and flash the production OS image, either
by using sysupgrade in the booted initramfs recovery OS, or by using
the bootloader menu and TFTP.
That's it. Go ahead and mess around with a bootchain built almost
completely from source (only DRAM calibration blobs are fitted in bl2,
and the irreplacable on-chip ROM loader remains, of course).
And enjoy U-Boot built with many great features out-of-the-box.
You can access the bootloader environment from within OpenWrt using the
'fw_printenv' and 'fw_setenv' commands. Don't be afraid, once you got
the new bootchain installed the device should be fairly unbrickable
(holding reset button before and during power-on resets things and
allows reflashing recovery image via TFTP)
Special thanks to @dvn0 (Devan Carpenter) for providing amazingly fast
infra for test-builds, allowing for `make clean ; make -j$(nproc)` in
less than two minutes :)
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The Linksys E8450, also known as Belkin RT3200, is a dual-band
IEEE 802.11bgn/ac/ax router based on MediaTek MT7622BV and
MediaTek MT7915AN chips.
FCC: K7S-03571 and K7S-03572
Hardware highlights:
- CPU: MediaTek MT7622BV (2x ARM Cortex-A53 @ 1350 MHz max.)
- RAM: 512MB DDR3
- Flash: 128MB SPI-NAND (2k+64)
- Ethernet: MT7531BE switch with 5 1000Base-T ports
CPU port connected with 2500Base-X
- WiFi 2.4 GHz: 802.11bgn 4T4R built-in antennas
MT7622VB built-in
- WiFi 5 GHz: 802.11ac/ax 4T4R built-in antennas
MT7915AN chip on-board via PCIe
MT7975AN front-end
- Buttons: Reset and WPS
- LEDS: 3 user controllable LEDs, 4 wired to switch
- USB: USB2.0, single port
- no Bluetooth (supported by SoC, not wired on board)
- Serial: JST PH 2.0MM 6 Pin connector inside device
----_____________----
[ GND RX - TX - - ]
---------------------
- JTAG: unpopulated ARM JTAG 20-pin connector (works)
This commit adds support for the device in a way that is compatible
with the vendor firmware's bootloader and dual-boot flash layout, the
resulting image can directly be flashed using the vendor firmware.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
simplify maintaining mt7622-bananapi-bpi-r64-rootdisk.dts by
storing only differences between upstream dts
Signed-off-by: Oskari Lemmela <oskari@lemmela.net>
The SPDX license identifier must be in the first line of a file,
unless there is a shebang (then it's the second line).
Fix this for the local files, do not care about the upstream patches.
While at it, update the identifiers where necessary.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Instead of adding those device tree sources using a patch, simply move
them to the newly created dts folder.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Use approach suggested by Adrian Schmutzler instead of introducing
another device variable.
Also revert the unnecessary white-space changes accidentally introduced
by the previous commit.
Fixed: c067b1e79b ("mediatek: move out-of-tree DTS files to dedicated dts folder")
Suggested-by: Adrian Schmutzler <mail@adrianschmutzler.de>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Use dedicated dts folder like on ramips to store device tree source
files for boards not already supported in vanilla Linux.
Doing so instead of having them in files-* has several advantages:
* we don't need to duplicate them for several kernel versions
* changes to a device tree don't trigger a complete kernel rebuild
* the files are more obvious to find
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
