diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S index bfb3aab8859e..64460b4e0fc1 100644 --- a/arch/arm/mach-at91/pm_suspend.S +++ b/arch/arm/mach-at91/pm_suspend.S @@ -46,15 +46,6 @@ tmp2 .req r5 beq 1b .endm -/* - * Wait until PLLA has locked. - */ - .macro wait_pllalock -1: ldr tmp1, [pmc, #AT91_PMC_SR] - tst tmp1, #AT91_PMC_LOCKA - beq 1b - .endm - /* * Put the processor to enter the idle state */ @@ -336,6 +327,34 @@ ENDPROC(at91_backup_mode) 3: .endm +.macro at91_plla_disable + /* Save PLLA setting and disable it */ + ldr tmp1, [pmc, #AT91_CKGR_PLLAR] + str tmp1, .saved_pllar + + /* Disable PLLA. */ + mov tmp1, #AT91_PMC_PLLCOUNT + orr tmp1, tmp1, #(1 << 29) /* bit 29 always set */ + str tmp1, [pmc, #AT91_CKGR_PLLAR] +.endm + +.macro at91_plla_enable + /* Restore PLLA setting */ + ldr tmp1, .saved_pllar + str tmp1, [pmc, #AT91_CKGR_PLLAR] + + /* Enable PLLA. */ + tst tmp1, #(AT91_PMC_MUL & 0xff0000) + bne 1f + tst tmp1, #(AT91_PMC_MUL & ~0xff0000) + beq 2f + +1: ldr tmp1, [pmc, #AT91_PMC_SR] + tst tmp1, #AT91_PMC_LOCKA + beq 1b +2: +.endm + ENTRY(at91_ulp_mode) ldr pmc, .pmc_base ldr tmp2, .mckr_offset @@ -352,13 +371,7 @@ ENTRY(at91_ulp_mode) wait_mckrdy - /* Save PLLA setting and disable it */ - ldr tmp1, [pmc, #AT91_CKGR_PLLAR] - str tmp1, .saved_pllar - - mov tmp1, #AT91_PMC_PLLCOUNT - orr tmp1, tmp1, #(1 << 29) /* bit 29 always set */ - str tmp1, [pmc, #AT91_CKGR_PLLAR] + at91_plla_disable ldr r0, .pm_mode cmp r0, #AT91_PM_ULP1 @@ -374,17 +387,7 @@ ulp1_mode: ulp_exit: ldr pmc, .pmc_base - /* Restore PLLA setting */ - ldr tmp1, .saved_pllar - str tmp1, [pmc, #AT91_CKGR_PLLAR] - - tst tmp1, #(AT91_PMC_MUL & 0xff0000) - bne 3f - tst tmp1, #(AT91_PMC_MUL & ~0xff0000) - beq 4f -3: - wait_pllalock -4: + at91_plla_enable /* * Restore master clock setting