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

[John Crispin]

On 24/12/2016 17:49, Martin Blumenstingl wrote:
> 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 sound like either

1) the cpu port is not configrued properly,
2) the switch is not configured properly
3) pinmux is failing

the odd thing is that wifi fails without bootloader init. how does wifi
fail exactly ?

	John


> 
>> 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
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