Commit 84c4f2f2 authored Aug 29, 2008 by Humphrey Bucknell Committed by Haavard Skinnemoen Sep 01, 2008

avr32: pm_standby low-power ram bug fix



The value stored into the SDRAMC LPR register should be the current
value of the register with the Self-refresh value set in the lower bit
field.

The bug involved only the Self-refresh value being written to the
register, thus over writing any low-power ram settings.

Signed-off-by: Humphrey Bucknell <hbucknell@saitek.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

parent 9e3f544d

arch/avr32/mach-at32ap/pm-at32ap700x.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -134,7 +134,7 @@ pm_standby:
		mov r11, SDRAMC_LPR_LPCB_SELF_RFR
		bfins r10, r11, 0, 2 /* LPCB <- self Refresh */
		sync 0 /* flush write buffer */
		st.w r12[SDRAMC_LPR], r11 /* put SDRAM in self-refresh mode */
		st.w r12[SDRAMC_LPR], r10 /* put SDRAM in self-refresh mode */
		ld.w r11, r12[SDRAMC_LPR]
		unmask_interrupts
		sleep CPU_SLEEP_FROZEN