On some WLR-7100 routers, significant packet loss was observed. This is
fixed by configuring a delay on the GMAC0 RXD and RXDV lines.
The values used in this commit are copied from the values used by the
stock firmare (based on register dumping).
Out of four test routers, the problem was consistently observed on two.
It is unclear what the relevant difference is exactly (the two working
routers were v1 001 with AR1022 and v1 002 with AR9342, the two broken
routers were both v1 002 with AR1022). All PCB routing also seems
identical, so maybe there is some stray capacitance on some of these
that adds just enough delay or so...
With this change, the packet loss disappears on the broken routers,
without introducing new packet loss on the previously working routers.
Note that the PHY *also* has delays enabled (through
`qca,ar8327-initvals`) on both RX and TX lines, but apparently that is
not enough, or it is not effective (registers have been verified to be
written).
For detailed discussion of this issue and debug history, see
https://forum.openwrt.org/t/sitecom-wlr-7100-development-progress/79641
Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
The uart node is enabled on all devices except one (GL-USB150 *).
Thus, let's not have a few hundred nodes to enable it, but do not
disable it in the first place.
Where the majority of devices is using it, also move the serial0
alias to the DTSI.
*) Since GL-USB150 even defines serial0 alias, the missing uart
is probably just a mistake. Anyway, disable it for now so this
patch stays cosmetic.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
None of the spi drivers on ath79 uses the num-cs property.
Cc: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Chuanhong Guo <gch981213@gmail.com>
Currently, we request LED labels in OpenWrt to follow the scheme
modelname:color:function
However, specifying the modelname at the beginning is actually
entirely useless for the devices we support in OpenWrt. On the
contrary, having this part actually introduces inconvenience in
several aspects:
- We need to ensure/check consistency with the DTS compatible
- We have various exceptions where not the model name is used,
but the vendor name (like tp-link), which is hard to track
and justify even for core-developers
- Having model-based components will not allow to share
identical LED definitions in DTSI files
- The inconsistency in what's used for the model part complicates
several scripts, e.g. board.d/01_leds or LED migrations from
ar71xx where this was even more messy
Apart from our needs, upstream has deprecated the label property
entirely and introduced new properties to specify color and
function properties separately. However, the implementation does
not appear to be ready and probably won't become ready and/or
match our requirements in the foreseeable future.
However, the limitation of generic LEDs to color and function
properties follows the same idea pointed out above. Generic LEDs
will get names like "green:status" or "red:indicator" then, and
if a "devicename" is prepended, it will be the one of an internal
device, like "phy1:amber:status".
With this patch, we move into the same direction, and just drop
the boardname from the LED labels. This allows to consolidate
a few definitions in DTSI files (will be much more on ramips),
and to drop a few migrations compared to ar71xx that just changed
the boardname. But mainly, it will liberate us from a completely
useless subject to take care of for device support review and
maintenance.
To also drop the boardname from existing configurations, a simple
migration routine is added unconditionally.
Although this seems unfamiliar at first look, a quick check in kernel
for the arm/arm64 dts files revealed that while 1033 lines have
labels with three parts *:*:*, still 284 actually use a two-part
labelling *:*, and thus is also acceptable and not even rare there.
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 ath79, 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 ath79.dtsi file 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 parent
ath79.dtsi, which is (indirectly) included by all DTS files. All
other occurences are removed.
Since the dts-v1 statement needs to be before any other definitions,
this also moves the includes to make sure the ath79.dtsi or its
descendants are always included first.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This applies several style adjustments that have been requested in
recent reviews to older DTS files. Despite making the code base more
consistent, this will also help to reduce review time when DTSes
are copy/pasted.
Applied changes:
- Rename gpio-keys/gpio-leds to keys/leds
- Remove node labels that are not used
- Use label property for partitions
- Prefix led node labels with "led_"
- Remove redundant includes
- Harmonize new lines after status property
- Several smaller style fixes
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Sitecom WLR-7100 v1 002 (marketed as X7 AC1200) is a dual band wireless
router.
Specification
SoC: Atheros AR1022
RAM: 64 MB DDR2
Flash: 8 MB SPI NOR
WIFI: 2.4 GHz 2T2R integrated
5 GHz 2T2R QCA9882 integrated (connected to PCIe lane)
Ethernet: 5x 10/100/1000 Mbps QCA8337N
USB: 1x 2.0
LEDS: 4x GPIO controlled, 5x switch
Buttons: 2x GPIO controlled
UART: row of 4 unpopulated holes near USB port, starting count from
white triangle on PCB
1. VCC 3.3V, 2. GND, 3. TX, 4. RX
baud: 115200, parity: none, flow control: none
Installation
1. Connect to one of LAN (yellow) ethernet ports,
2. Open router configuration interface,
3. Go to Toolbox > Firmware,
4. Browse for OpenWrt factory image with dlf extension and hit Apply,
5. Wait few minutes, after the Power LED will stop blinking, the router
is ready for configuration.
Known issues
5GHz LED doesn't work
Additional information
When TX line on UART is connected, and board is switched on from power
off state, the DDR memory training may fail.
If connected to UART, when prompted for number on boot, one can enter
number 4 to open bootloader (U-Boot) command line.
OEM firmware shell password is: SitecomSenao
useful for creating backup of original firmware.
There is also another revision of this device (v1 001), which may or may
not work with introduced images.
Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
