[Arm-netbook] ingenic jz4760 eoma-68 card

[luke.leighton]

well... i sent a message to ingenic a couple of hours ago, asking if
they would be happy to send me the PADS PCB and design files for their
reference design using the jz4760, and i just received them!  i'm
amazed.  so i can have a go at doing a jz4760 CPU card as well.

already i have a couple of questions, but they need to wait for a bit,
as i do not want to overwhelm ingenic :)  simple questions like "how
do you wire up an RG-MII PHY when the pin-outs from the ethernet port
aren't documented" and "although there are 16 address lines for DDR2
coming from the processor, what's the actual maximum RAM that is
supported?" - y'know, simple things like that.

sadly the jz4760 doesn't have SATA, and the 2nd USB port is listed as
only 12mbit/sec, so i have to put down a USB hub IC *and* a
USB-to-SATA IC (probably a JM20337), find a circuit for that because
the datasheet doesn't haave ooone... ahh it's all good :)

l.