Power saving mode

I need to run my mini2440 linux device 24x7.
Is there any way I can save power during idle time?
I cannot shutdown because it takes lot time to boot again

I assume you are using a kernel that will shut the touchscreen off after a
period of inactivity. That's the big power load.

Have you read chapter 7 in S3C2440.pdf?

There are lots of options in the kernel config to do with power management.

Whether they work or on this platform I can't confirm.

. . . or NOT . . .