Hello,

I have two versions of FriendlyARM's Mini2440 hardware: with 1GB and
with 256MB of NAND and two A70 screens (each bought as a bundle).

The first runs just fine (1GB NAND), touch screen works without
problem. In the second (256GB NAND) it does not. But the touchscreen
is operational: it worked with the default Linux install (the one they
ship device with, kernel `uname -a`: Linux "FriendlyARM
2.6.32.2-FriendlyARM #1 Wed Jun 6 15:43:59 HKT 2012 armv4tl unknown").

Both devices run the same barebox, kernel and rootfs versions, built
using OSELAS.BSP-Pengutronix-Mini2440-2012.12.0, Linux 3.7.1, barebox
2013.05.1.

I have verified that (on the faulty machine):

* /sys/bus/platform/drivers/samsung-ts exists
* /sys/bus/platform/devices/s3c2440-ts exists
* I use "mini2440=1tb" kernel parameter

following "OSELAS Quickstart for FriendlyARM Mini2440" in section
"8.10.1 If the Touchscreen does not work".

However  `evtest /dev/input/touchscreen` does not show any events on
faulty machine and works flawlessly on the good one.

Also the A70 screen from the 256MB NAND based set does not work with
the 1GB NAND board
*and*
A70 screen from 1GB NAND based set does not work with 256MB NAND board.

What can be the cause of this? How can I address this issue?

Will using a newer or older kernel help? Which version do you suggest
to start with?

Thank you,
Pawel

p.s. I attach dmesgs for both devices, they differ slightly, namely on line:

s3c-i2c s3c2440-i2c: registers c4848000 (c3873520, c03aa898)  <-- 1GB
s3c-i2c s3c2440-i2c: registers c4848000 (c3863520, c03aa898)  <-- 256MB