[LEDE-DEV] Help needed: IP175D + RT3662 issues on a "new" device

[Martin Blumenstingl]

On Sat, Dec 24, 2016 at 5:17 PM, antonio rossi <braccoz at hotmail.com> wrote:
> Hi everybody,
>
> i'll try to make this as short as possible despite the large amount of
> information needed to describe the issue:
>
> i am working on adding support to LEDE/OpenWRT for DIR-815 A1, it's a
> RT3662+RT3092 device with an infamous IP175D switch IC.
> i managed to get everything working properly, save for the fact that
> network (both ethernet&wifi) works only after the stock bootloader
> does some funky stuff to set up the internal cpu port and/or switch
> to receive images via TFTP.
if only ethernet was affected then this might have been some pinctrl issue.
but since wifi is also affected this might be more of a clock (gate?) issue.

maybe John has more information (or even a suspect) here?

> this basically means that when the bootloader receives something via
> TFTP then any image booted (either initramfs or from flash) works properly,
> while a squashfs image booted from the internal flash (so the bootloader
> does not set up cpu port/switch) doesn't.
> the boot log of working and non-working states are basically identical. the
> switch is recognized and everything. i've tried every possible combination of
> parameters in the DTS file to no avail.
> I also investigated GPIO pins, but the only pin that has somewhat of an effect
> is GPIO24 which is connected to the switch reset pin, and it has no effect on
> the issue itself (it just resets the switch that then needs to be reconfigured
> with the vlans and such)
> What catches my interest are those few lines from the bootloader that says
>
>
> 1.set ge1 as normal mode
>
>
> 1.set ge1 as mii mode
>
>
> enable turbo mii
>
>
> Using Eth0 (10/100-M) device
>
>
> i am guessing ge1 refers to the gigabit ethernet cpu port and the turbo mii,
> well, i can't set that mode, just normal mii. it's weird because changing
> phy-mode in the DTS actually affects the cpu port and switch but there is
> still something missing to make it work without bootloader/stock rom
> intervention.
>
> here are the bootlog pastebins, both of working and non working state
> (in this order).
> any help is appreciated.
>
> http://pastebin.com/rNwewZ8J
> http://pastebin.com/Gw9DNfFZ
>
> here is the DTS
> http://pastebin.com/iLSbw9gJ
>
> here is the swconfig output (identical in both working and non-working state)
> http://pastebin.com/iBK47i9m
>
> best regards,
> Bracco
> _______________________________________________
> Lede-dev mailing list
> Lede-dev at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/lede-dev