Re: [jornada] Problems with CyaCE-YACH

On Wed, 27 Mar 2002, John Ankcorn wrote:

> The Jornada 720 does not use the SA1110 LCD controller for the display
> (in fact the internal controller must be disabled, as the GPIO lines
> used for the LCD actually control other hardware (e.g., sound).

but i used epson1356fb.c

> The controller chip actually used is an Epson 1356 and the driver
> for this is in drivers/video/epson1356fb.c.

maybe the -hh2 patch broke something?
the kernel says:
Configuring Jornada LCD
[epson1356fb.c:92] e1356fb_set_var() entry
[epson1356fb.c:147] e1356fb_set_var() exit
and freezes at this point

in the source in e1356fb_init() after the call to e1356fb_switch() a lot
of registers are set and this is the place where it seems to hang (the
printk at the end of e1356fb_init() isn't reached). i will try to put some
printk's in there to see where it goes wrong (after i set up a
crosscompiler for arm - i feel that i'm abusing the skiffcluster too much
already).

my guess is that the hardware was already preconfigured by wince, and that
while epson1356fb.c works ok when it boots on cold-booted hardware it
breaks when something has configured it previously. maybe it doesn't like
powersave mode?

jacek

ps. the .tgz of my tree that was posted at my site was corrupt (fixed it),
and i have posted the .config file in case you don't want the whole tree.
i also extract the CIBD patch in case someones interested.
Received on Thu Mar 28 2002 - 10:51:51 EST