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

[John Crispin]

On 25/12/2016 14:33, Christian Lamparter wrote:
> Hello,
> 
> On Saturday, December 24, 2016 6:22:13 PM CET John Crispin wrote:
>> 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 ?
> 
> I helped Antonio a bit. It turns out that the GE1 needs to be set to MII
> mode (The default is RGMII). As far as I can tell, he had added this setting
> already in the DTS. But the rt2880_port_init() didn't do anything with the 
> phy mode. I've made a patch (attached) that will set the bits in SYSCTL1
> and he's currently testing it.
> 
> For now, I just added it to rt2880_port_init. However I don't know if the
> RT2880 uses the same registers and bits (Don't have the RT2880 datasheet).
> So, what do you think? 
> 
> Regards,
> Christian
> 

I'd merge this path. could you submit it please with proper annotation,
SoB ....

	John