The LCD must be switched on using the ATI chip. the following code fragment does that.
absolutely no idea what these values are. the ASIC3 GPIO B outs switch off some unknown but LCD-power-related GPIO bits, then a pause is needed, then they can be re-enabled. seems to work.
except that the virtual memory address had to be mapped from 0xab010000->physical address 0x08010000 to
0xf5010000 -> physical address 0x08010000 because the linux arm kernel only supports 0xf0000000 to 0xc0000000
for device virtual memory addressing wot a pain.
This was sufficient information for D Bently to identify the chip as an ATI 3200, for which he has written a first
version of an Imageon Accelerated driver. Apparently, the Toshiba e72x series uses the same chip, which does MPEG
and everything.