Dual-Q H721 is a router platform board, it is the smaller model of
the U7621-06.

The device has the following specifications:

MT7621AT (880 MHz)
256 of RAM (DDR3)
16 MB of FLASH (MX25l12805d SPI)
5x 1 Gbps Ethernet (MT7621 built-in switch)
1x M.2 (NGFF) 3.7V 3A max for 5G M.2 Modem work at USB3.0 mode
1x Minipcie 3.7V 3A max for LTE Modem work at USB2.0 Mode
2x Minipcie for WIFI card
4x Lan+1x Wan 10/100M/1000M RJ45 port
14x LEDs (1x GPIO-controlled)
1x reset button
1x UART header (4-pins)
1x mico SD-card reader
1x DC jack for main power (5~27 V)

The following has been tested and is working:

Ethernet switch
miniPCIe slots (tested with Wi-Fi cards and LTE modem cards)
miniSIM slot (works with normal size simcard)
sysupgrade
reset button
micro SD-card reader

Installation:

This board has no locked down bootloader. The seller can be asked to
install openwrt, so upgrades are standard sysupgrade method.

Recovery:

This board contains a Chinese, closed-source bootloader called Breed
(Boot and Recovery Environment for Embedded Devices). Breed supports web
recovery and to enter it, you keep the reset button pressed for around
5 seconds during boot. Your machine will be assigned an IP through DHCP
and the router will use IP address 192.168.1.1. The recovery website is
in Chinese, but is easy to use. Click on the second item in the list to
access the recovery page, then the second item on the next page is where
you select the firmware. In order to start the recovery, you click the
button at the bottom.

Signed-off-by: Dawsen Gao <dawsen_gao@163.com>
[change author name (used SoB one), add ethernet pinctrl,
 apply sorting to device recipe]
Signed-off-by: Sungbo Eo <mans0n@gorani.run>

Add the missing pinctrl properties on the ethernet node.
GMAC1 will start working with this change.

Link: https://lore.kernel.org/netdev/83a35aa3-6cb8-2bc4-2ff4-64278bbcd8c8@arinc9.com/



Overwrite pinctrl-0 property without rgmii2_pins on devicetrees which use
the rgmii2 pins as GPIO (22 - 33).

Give gpio function to rgmii2 pin group on mt7621_tplink_archer-x6-v3.dtsi
which uses GPIO 28.

Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.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>

Rework patch 681-NET-add-mtd-mac-address-support to implement
only the function to read the mac-address from mtd.
Generalize mtd-mac-address-increment function so it can be applied
to any source of of_get_mac_address.
Rename any mtd-mac-address-increment to mac-address-increment.
Rename any mtd-mac-address-increment-byte to mac-address-increment-byte.

This should make simplify the conversion of target to nvmem implementation.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

Like in the previous patch for ath79 target, this will remove the
"devicename" from LED labels in ramips as well.

The devicename is removed in DTS files and 01_leds, consolidation
of definitions into DTSI files is done where (easily) possible,
and migration scripts are updated.

For the latter, all existing definitions were actually just
devicename migrations anyway. Therefore, those are removed and
a common migration file is created in target base-files. This is
actually another example of how the devicename removal makes things
easier.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

The "/dts-v1/;" identifier is supposed to be present once at the
top of a device tree file after the includes have been processed.

In ramips, we therefore requested to have in the DTS files so far,
and omit it in the DTSI files. However, essentially the syntax of
the parent mtxxxx/rtxxxx DTSI files already determines the DTS
version, so putting it into the DTS files is just a useless repetition.

Consequently, this patch puts the dts-v1 statement into the top-level
SoC-based DTSI files, and removes all other occurences.
Since the dts-v1 statement needs to be before any other definitions,
this also moves the includes accordingly where necessary.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

In DTS Checklist[1] we're now demanding proper generic node names, as
the name of a node should reflect the function of the device and use
generic name for that[2]. Everybody seems to be copy&pasting from DTS
files available in the repository today, so let's unify that naming
there as well and provide proper examples.

While at it, remove unused m25p80 label.

Tested on rt5350 (for spi-nor) and rt3662 (for cfi-flash).

1. https://openwrt.org/submitting-patches#dts_checklist
2. https://github.com/devicetree-org/devicetree-specification/blob/master/source/devicetree-basics.rst#generic-names-recommendation



Signed-off-by: Sungbo Eo <mans0n@gorani.run>

As the node is already defined and labeled in SoC DTSI file, we can refer to it
outside of root node and reduce redundancy.

While at it, remove unused pcf8563 label.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>

Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>
[split commit, remove leftover uart3->gpio setup]
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

update dts and network/LED configuration for DSA driver.
sysupgrade from images prior to this commit with config preserved
will cause broken ethernet setup.

Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>
Acked-by: Jo-Philipp Wich <jo@mein.io>
[split commit]
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

Upstream GPIO driver uses "groups" "function" properties

Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>

The upstream driver does not use &gpio0..2 banks notation anymore,
so convert them to &gpio

Signed-off-by: DENG Qingfang <dengqf6@mail2.sysu.edu.cn>

The node pinctrl0 is already set up in the SOC DTSI files, but
defined again as member of pinctrl in most of the device DTS(I)
files. This patch removes this redundancy for the entire ramips
target.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

This converts all remaining devices to use interrupt-driven
gpio-keys compatible instead of gpio-keys-polled.
The poll-interval is removed.

While at it, add/remove newlines in keys and leds node where
necessary.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

Spelling of Zbtlink varies across image definitions and DTS files.

This patch uses Zbtlink consistently and also updates the model
in DTS files to contain the vendor in all cases.

This patch is cosmetical, as there should be no dependencies on
device model name in ramips anymore.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

mt7621 and mt7628 now have the ability to detect memory size
automatically.
Drop memory nodes and let kernel determine memory size.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

As introduced with ath79, DTS files for ramips will now be labelled
soc_vendor_device.dts(i). With this change, DTS files can be
selected automatically without further manual links.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

This option was a spi nor hack which is dropped in commit
bcf4a5f4 ("ramips: remove chunked-io patch and set spi->max_transfer_size instead")

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [edit message]

In DTS Checklist[1] we're now demanding proper generic node names, as
the name of a node should reflect the function of the device and use
generic name for that[2]. Everybody seems to be copy&pasting from DTS
files available in the repository today, so let's unify that naming
there as well and provide proper examples.

1. https://openwrt.org/submitting-patches#dts_checklist
2. https://github.com/devicetree-org/devicetree-specification/blob/master/source/devicetree-basics.rst#generic-names-recommendation



Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [split up]

In DTS Checklist[1] we're now demanding proper generic node names, as
the name of a node should reflect the function of the device and use
generic name for that[2]. Everybody seems to be copy&pasting from DTS
files available in the repository today, so let's unify that naming
there as well and provide proper examples.

1. https://openwrt.org/submitting-patches#dts_checklist
2. https://github.com/devicetree-org/devicetree-specification/blob/master/source/devicetree-basics.rst#generic-names-recommendation



Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [split up]

Specify firmware partition format by compatible string.

formats in ramips:

- denx,uimage
- tplink,firmware
- seama

It's unlikely but the firmware splitting might not work any longer for
the following boards, due to a custom header:

- EX2700: two uImage headers
- BR-6478AC-V2: edimax-header
- 3G-6200N: edimax-header
- 3G-6200NL: edimax-header
- BR-6475ND: edimax-header
- TEW-638APB-V2: umedia-header
- RT-N56U: mkrtn56uimg

But it rather looks like the uImage splitter is fine with the extra
header.

The following dts are not touched, due to lack of a compatible string in
the matching firmware splitter submodule:

- CONFIG_MTD_SPLIT_JIMAGE_FW
    DWR-116-A1.dts
    DWR-118-A2.dts
    DWR-512-B.dts
    DWR-921-C1.dts
    LR-25G001.dts
- CONFIG_MTD_SPLIT_TRX_FW
    WCR-1166DS.dts
    WSR-1166.dts
- CONFIG_MTD_SPLIT_MINOR_FW
    RBM11G.dts
    RBM33G.dts
- CONFIG_MTD_SPLIT_LZMA_FW
    AR670W.dts
- CONFIG_MTD_SPLIT_WRGG_FW
    DAP-1522-A1.dts

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>

Use diag.sh version used for other targets supporting different leds
for the different boot states.

The existing led sequences should be the same as before.

Signed-off-by: Mathias Kresin <dev@kresin.me>

Starting with kernel 4.4, the use of partitions as direct subnodes of the
mtd device is discouraged and only supported for backward compatiblity
reasons.

Signed-off-by: Alex Maclean <monkeh@monkeh.net>

Fix individual boards dtc warnings or obvious mistakes.

Signed-off-by: Mathias Kresin <dev@kresin.me>

Add the ranges property to the PCI bridges where missing. Add the unit
address to PCI bridge where missing.

Rework the complete rt3883 pci node. Drop the PCI unit nodes from the
dtsi. They are not used by any dts file and should be rather in the dts
than in the SoC dtsi. Express the PCI-PCI bridge in a clean devicetree
syntax. The ralink,pci-slot isn't used by any driver, drop it. Move the
pci interrupt controller out of the pci node. It doesn't share the same
reg and therefore should be an independent/SoC child node.

Move the pci related rt3883 pinctrl setting to the dtsi instead of
defining the very same for each rt3883 board.

If the device_type property is used for PCI units, the unit is treated
as pci bridge which it isn't. Drop it for PCI units.

Reference pci-bridges or the pci node defined in the dtsi instead of
recreating the whole node hierarchy. It allows to change the referenced
node in the dtsi without the need to touch all dts.

Fix the PCI(e) wireless unit addresses. All our PCI(e) wireless chips
are the first device on the bus. The unit address has to be the bus
address instead of the PCI vendor/device id.

Signed-off-by: Mathias Kresin <dev@kresin.me>

Also fix several typos in led node name.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

This reverts commit 02f815d1.

Signed-off-by: John Crispin <john@phrozen.org>

That commit exposed a bug in the DTS files used by mt7621 where the wrong
reg value for pcie1 (and potentially pcie2) was being used. This was
causing WiFi failures for interfaces in pcie1.

eg. 2.4GHz working but not 5GHz.

As all of these dts entries are already specified in mt7621.dtsi, remove
them.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Remove reference to pinmux group "wdt rst" on EW1200, ZBT-WG2626 and
ZBT-WG3526 devices. "wdt rst" is a pinmux function and not a pinmux
group.

Fixes the following error message during boot:

  rt2880-pinmux pinctrl: invalid group "wdt rst" for function "gpio"

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

Use the GPIO dt-bindings macros and add compatible strings in the
ramips device tree source files.

Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>

Add compatible strings to all mt7621 based device tree source files to
fix formal issues.

Signed-off-by: L. D. Pinney <ldpinney@gmail.com>

Uses upstream code to parse DT supported band/frequency information.
Update existing .dts files to the new format and remove unnecessary
overrides.

Signed-off-by: Felix Fietkau <nbd@nbd.name>

Fix a typo in mt7621.dtsi compatible string. Disable spi, sdhci and pci
in mt7621.dtsi and enable the nodes in the indiviual board dts files.
The nodes require further device specific configuration anyway.

Remove the m25p80@0 spi child node from mt7621.dtsi and add the
chunked-io parameter to the individual board dts files. Fix the spi
flash compatible string for the WNDR3700V5.

Drop the mt7621-eval-board compatible string for all boards which are
not the eval board.

Drop the linux,modalias parameter from spi flash node.

Remove the xhci node from board files, it is already enabled in dtsi.
Disable xhci for boards not having usb ports populated.

Signed-off-by: Mathias Kresin <dev@kresin.me>

All compiled device tree files not mentioned are binary identical to the
former ones.

Fix the obvious decimal/hex confusion for the power key of ramips/M2M.dts.

Due to the include of the input binding header, the BTN_* node names in:

  - ramips/GL-MT300A.dts
  - ramips/GL-MT300N.dts
  - ramips/GL-MT750.dts
  - ramips/Timecloud.dts

will be changed by the compiler to the numerical equivalent.

Move the binding include of lantiq boards to the file where they are
used the first time to hint the user where the values do come from.

Signed-off-by: Mathias Kresin <dev@kresin.me>

Signed-off-by: Michael Lee <igvtee@gmail.com>

size-cells should be 0 in order to avoid dummy values in reg properties.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Add node aliases to dtsi files.
Reword dts files so they're more in-line with upstream.
Fix some more warnings and errors reported by dtc

Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>

The bootloader was updated and now uses 115200 instead of 57600 baud
for the serial console. Change this also in OpenWrt's DTS, so the rate
is consistent for bootloader and linux kernel output.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

SVN-Revision: 48359

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 47935

This also adds dts nodes for cpc and mc for documentation purposes

Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com>

SVN-Revision: 47836