As of upstream Linux commit 0fe1e96fef0a ("powerpc/pci: Prefer PCI
domain assignment via DT 'linux,pci-domain' and alias"), the PCIe
domain address is no longer numbered by the lowest 16 bits of the PCI
register address after a fallthrough. Instead of the fallthrough, the
enumeration process accepts the alias ID (as determined by
`of_alias_scan()`). This causes e.g.:
9000:00:00.0 PCI bridge: Freescale Semiconductor Inc P1020E (rev 11)
9000:01:00.0 Network controller: Qualcomm Atheros AR958x 802.11abgn ...
to become
0000:00:00.0 PCI bridge: Freescale Semiconductor Inc P1020E (rev 11)
0000:01:00.0 Network controller: Qualcomm Atheros AR958x 802.11abgn ...
... which then causes the sysfs path of the netdev to change,
invalidating the `wifi_device.path`s enumerated in
`/etc/config/wireless`.
One other solution might be to migrate the uci configuration, as was
done for mvebu in commit 0bd5aa89fcf2 ("mvebu: Migrate uci config to
new PCIe path"). However, there are concerns that the sysfs path will
change once again once some upstream patches[^2][^3] are merged and
backported (and `CONFIG_PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT` is enabled).
Instead, remove the aliases and allow the fallthrough to continue for
now. We will provide a migration in a later release.
This was first reported as a Github issue[^1].
[^1]: https://github.com/openwrt/openwrt/issues/10530
[^2]: https://lore.kernel.org/linuxppc-dev/20220706104308.5390-1-pali@kernel.org/t/#u
[^3]: https://lore.kernel.org/linuxppc-dev/20220706101043.4867-1-pali@kernel.org/Fixes: #10530
Tested-by: Martin Kennedy <hurricos@gmail.com>
[Tested on the Aerohive HiveAP 330 and Extreme Networks WS-AP3825i]
Signed-off-by: Martin Kennedy <hurricos@gmail.com>
(cherry picked from commit 7f4b4c29f3489697dca7495216460d0ed5023e02)
include the device-tree binding headers that provide definitions
for keys codes and gpios in the device-tree files.
Random bonus: merge tl-wdr4900-v1's uboot with the nvmem-node.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
WLAN0 and the unused LED are currently swapped. Fix this, so the LED
behavior matches the other OCEDo devices.
Signed-off-by: David Bauer <mail@david-bauer.net>
CPU: FSL P1020 (2x 800MHz E500 PPC)
RAM: 1GB DDR3
FLASH: 256MiB NAND
WiFi: 2x Atheros AR9382 2x2:2 abgn
ETH: 2x BCM54616S - 1x BCM53128 8-port switch
LED: 5x LEDs (Power, WiFi1, WiFi2, N/D, SYS)
BTN: 1x RESET
Installation
------------
1. Download initrams kernel image, dtb binary and sysupgrade image.
2. Place initramfs kernel into tftp root directory. Rename to
"panda-uimage-factory".
3. Place dtb binary into tftp root directory. Rename to "panda.fdt".
4. Start tftp server on 192.168.100.8/24.
5. Power up the device with the reset button pressed. It will download
the initrams and dtb via tftp and boot into OpenWRT in RAM.
6. SSH into the device and remove the factory partitions.
> ubirmvol /dev/ubi0 --name=kernel1
> ubirmvol /dev/ubi0 --name=rootfs1
> ubirmvol /dev/ubi0 --name=devicetree1
You will have around 60 MiB of free space with that.
You can also delete "kernel2", "devicetree2", "rootfs2" and "storage"
respectively in case you do not want to go back to the vendor firmware.
7. Modify the U-Boot bootcmd to allow for booting OpenWRT
> fw_setenv bootcmd_owrt "ubi part ubi && ubi read 0x1000000 kernel
&& bootm 0x1000000"
> fw_setenv bootargs_owrt "setenv bootargs console=ttyS0,115200
ubi.mtd=3,2048"
> fw_setenv bootcmd "run bootargs_owrt; run bootcmd_owrt"
8. Transfer the sysupgrade image via scp into the /tmp directory.
9. Upgrade the device
> sysupgrade -n /tmp/<imagename>
Signed-off-by: David Bauer <mail@david-bauer.net>
