Currently, the MT7530 DSA subdriver configures the MT7530 switch to provide
direct access to switch PHYs, meaning, the switch PHYs listen on the MDIO
bus the switch listens on. The PHY muxing feature makes use of this.
This is problematic as the PHY may be attached before the switch is
initialised, in which case, the PHY will fail to be attached.
Since commit 91374ba537bd ("net: dsa: mt7530: support OF-based registration
of switch MDIO bus") on mainline Linux, we can describe the switch PHYs on
the MDIO bus of the switch on the device tree.
When the PHY is described this way, the switch will be initialised first,
then the switch MDIO bus will be registered. Only after these steps, the
PHY will be attached.
Describe the switch PHYs on mt7621.dtsi and remove defining the switch PHY
on the SoC's mdio bus node. When the PHY muxing is in use, the interrupts
for the muxed PHY won't work, therefore delete the "interrupts" property on
the devices where the PHY muxing feature is in use.
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Mux the MT7530 switch's phy0/4 to the SoC's gmac1 on devices where RGMII2
pins are available. This achieves 2 Gbps total bandwidth to the CPU using
the second RGMII.
The ports called "wan" are muxed where possible. On a minority of devices,
this is not possible. Those cases:
mt7621_ampedwireless_ally-r1900k.dts: lan3
mt7621_ubnt_edgerouter-x.dts: eth0
mt7621_gnubee_gb-pc1.dts: ethblue
mt7621_linksys_re6500.dts: lan1
mt7621_netgear_wac104.dts: lan4
mt7621_tplink_eap235-wall-v1.dts: lan0
mt7621_tplink_eap615-wall-v1.dts: lan0
mt7621_ubnt_usw-flex.dts: lan1
The "wan" port is just what the vendor designated on the board/plastic
chasis of the device. On a technical level, there is no difference between
a lan and wan port on MT7621AT, MT7621DAT and MT7621ST SoCs. Prefer
connecting to WAN via the port described above for these devices to benefit
the feature brought with this patch.
mt7621_d-team_newifi-d2.dts cannot benefit this feature, although it looks
like it should, because the rgmii2 pins are wired to unused components.
Tested on a range of devices documented on the GitHub PR.
Link: https://github.com/openwrt/openwrt/pull/10238
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Specifications:
- SoC: MT7621DAT (880MHz, 2 Cores)
- RAM: 128 MB
- Flash: 128 MB NAND
- Ethernet: 5x 1GiE MT7530
- WiFi: MT7603/MT7613
- USB: 1x USB 3.0
This is another MT7621 device, very similar to other Linksys EA7300
series devices.
Installation:
Upload the generated factory.bin image via the stock web firmware
updater.
Reverting to factory firmware:
Like other EA7300 devices, this device has an A/B router configuration
to prevent bricking. Hard-resetting this device three (3) times will
put the device in failsafe (default) mode. At this point, flash the
OEM image to itself and reboot. This puts the router back into the 'B'
image and allows for a firmware upgrade.
Troubleshooting:
If the firmware will not boot, first restore the factory as described
above. This will then allow the factory.bin update to be applied
properly.
Signed-off-by: Nick McKinney <nick@ndmckinney.net>
