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ARM: at91: pm: add quirk for sam9x60's ulp1

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On SAM9X60 2 nop operations has to be introduced after setting
WAITMODE bit in CKGR_MOR.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1579522208-19523-9-git-send-email-claudiu.beznea@microchip.com
This commit is contained in:
Claudiu Beznea 2020-01-20 14:10:08 +02:00 committed by Alexandre Belloni
parent 4fd36e4583
commit bb1a0e87e1
1 changed files with 4 additions and 0 deletions
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4
arch/arm/mach-at91/pm_suspend.S
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@ -275,6 +275,10 @@ ENDPROC(at91_backup_mode)
orr tmp1, tmp1, #AT91_PMC_KEY
str tmp1, [pmc, #AT91_CKGR_MOR]
/* Quirk for SAM9X60's PMC */
nop
nop
wait_mckrdy
/* Enable the crystal oscillator */