I'm currently trying to bring up a 3.2.10 Kernel on the i.MX 28 EVK. The default configuration is booting up fine and at a first glance it seems to work.
Now I try to get a NAND Flash (MT29F4G08 in particular) up and running but I don't really know where to start as none of the boards in Mainline Linux have it implemented.
After some research I found a Patchset that seems to add NAND support to the mx28evk and gave it a try. The patches  needed some love to apply cleanly on my kernel but I manged to get it in. The Kernel also boots up but the initialization of the gpmi driver gives me the following error message:
[ 3.720000] uart-pl011 duart: no DMA platform data
[ 3.730000] mxs-auart.0: ttyAPP0 at MMIO 0x8006a000 (irq = 112) is a mxs-auart.0
[ 3.740000] mxs-auart mxs-auart.0: Found APPUART 3.1.0
[ 3.740000] mxs-auart.3: ttyAPP3 at MMIO 0x80070000 (irq = 115) is a mxs-auart.3
[ 3.750000] mxs-auart mxs-auart.3: Found APPUART 3.1.0
[ 3.810000] brd: module loaded
[ 3.820000] Can't acquire DMA channel 4
[ 3.830000] gpmi-nand: probe of imx28-gpmi-nand failed with error -22
[ 3.830000] GPMI NAND driver registered. (IMX)
[ 3.840000] FEC Ethernet Driver
[ 3.900000] fec_enet_mii_bus: probed
The kernel boots into the console but flash access doesn't work.
A quick try with 3.4-rc2 also failed, the kernel refused to boot up without any notice. I'll give 3.3 a chance when I have some more time to work on this but in the meantime I'm eager to hear which thoughts the community has on this.
The Problem is that I need a very recent kernel for my project so it would be fine to achieve that functionality with some version >3.0.
Has anyone already managed to get the GPMI working in some post 3.0 versions or has any pointers into the right direction for me ?
I'd really appreciate any help :)