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| author | Sylvain Rochet <sylvain.rochet@finsecur.com> | 2015-02-05 14:01:23 +0800 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2015-03-13 11:12:06 +0100 |
| commit | d18c570ef3fe9c3b394c0c215b04e9729d85d14f (patch) | |
| tree | e27b3b9d47705e53cf603a77d4b5c6c21017dde2 /arch/arm/mach-at91 | |
| parent | 09fc78a601e59de89f125c8e6739fd21a7e2fd01 (diff) | |
| download | linux-d18c570ef3fe9c3b394c0c215b04e9729d85d14f.tar.gz | |
ARM: at91/pm_slowclock: remove clocks which are already stopped when entering slow clock mode
Assume USB PLL and PLL B are already stopped before entering sleep mode. Removed PLL B from slow clock code, all drivers are supposed to properly unprepare clocks. Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com> Acked-by: Wenyou.Yang <wenyou.yang@atmel.com> [nicolas.ferre@atmel.com: remove the warning printed in pm.c] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91')
| -rw-r--r-- | arch/arm/mach-at91/pm_slowclock.S | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/arch/arm/mach-at91/pm_slowclock.S b/arch/arm/mach-at91/pm_slowclock.S index 6022d2d8c267..a207dea3a152 100644 --- a/arch/arm/mach-at91/pm_slowclock.S +++ b/arch/arm/mach-at91/pm_slowclock.S @@ -50,15 +50,6 @@ tmp2 .req r5 beq 1b .endm -/* - * Wait until PLLB has locked. - */ - .macro wait_pllblock -1: ldr tmp1, [pmc, #AT91_PMC_SR] - tst tmp1, #AT91_PMC_LOCKB - beq 1b - .endm - .text .arm @@ -176,13 +167,6 @@ sdr_sr_done: orr tmp1, tmp1, #(1 << 29) /* bit 29 always set */ str tmp1, [pmc, #AT91_CKGR_PLLAR] - /* Save PLLB setting and disable it */ - ldr tmp1, [pmc, #AT91_CKGR_PLLBR] - str tmp1, .saved_pllbr - - mov tmp1, #AT91_PMC_PLLCOUNT - str tmp1, [pmc, #AT91_CKGR_PLLBR] - /* Turn off the main oscillator */ ldr tmp1, [pmc, #AT91_CKGR_MOR] bic tmp1, tmp1, #AT91_PMC_MOSCEN @@ -200,18 +184,6 @@ sdr_sr_done: wait_moscrdy - /* Restore PLLB setting */ - ldr tmp1, .saved_pllbr - str tmp1, [pmc, #AT91_CKGR_PLLBR] - - tst tmp1, #(AT91_PMC_MUL & 0xff0000) - bne 1f - tst tmp1, #(AT91_PMC_MUL & ~0xff0000) - beq 2f -1: - wait_pllblock -2: - /* Restore PLLA setting */ ldr tmp1, .saved_pllar str tmp1, [pmc, #AT91_CKGR_PLLAR] @@ -279,9 +251,6 @@ ram_restored: .saved_pllar: .word 0 -.saved_pllbr: - .word 0 - .saved_sam9_lpr: .word 0 |