Both...

I started from a clean linux omap kernel from git with Solca's patches applied on it, but since OMAP1 and 2 don't have much in common you can say that i'm using only the Android related ones

The 1GB Kingston RS-MMC wasn't initializing properly and i had to patch the kernel - consulting with the old 2.6.16 support with fanoush's 48MHz patch applied on it. This probably means that the oldest MMC cards won't work, but you can't put Android in 16 or 64MB anyway. At least it will be fast. That left only two problems at the end - wrong voltage and the EXT_CSD couldn't be read, which were hard to find without debugging (i only had the FB console on my 770, didn't want to solder anything

The touchscreen was inverted on two axes - i used Solca's formula there slightly modified + the old 2.6.16 ls041y3 touch panel filter (not sure if that was needed, but added it anyway ).

That was all i think if we don't count the kernel configuration which is a PITA by itself . I'll post the patches one of these days.