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From: | Kevin Wells |
Subject: | RE: [Ltib] LPC3250 low power mode? |
Date: | Tue, 28 Dec 2010 18:10:06 +0100 |
Hi Henry, Which board and kernel version are you using? If you are using a custom board, are you using DDR memory? thanks, Kevin From: address@hidden [mailto:address@hidden On Behalf Of Li Yuan-Lung Dear Kevin, 2010/12/28 Kevin Wells <address@hidden> Hi Henry, The CPU and system clocks speeds are changed with the boot loader (S1L or kick start). You may need to build a new version of the boot loader with your desired setup. The Linux kernel has built-in power management and you should be able to enter the suspend-to-mem state on the LPC32x0 and then wakeup on a specific event (ie, gpio, SD card insertion, RTC alarm, etc.) A basic write-up using the RTC alarm is here: http://www.lpclinux.com/Forums/ForumLPC32xx0005 I know this works for the Phytec board, but it hasn’t been tested on the EA and FDI boards with DDR memory, although the code should be complete. Kevin From: henry.li@wonselor.com [mailto:address@hidden] On Behalf Of Li Yuan-Lung Dear NXP members,
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