[PATCH 8/8] ARM: at91: pm: add quirk for sam9x60's ulp1

From: Claudiu Beznea
Date: Mon Jan 20 2020 - 07:10:45 EST


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

Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
---
arch/arm/mach-at91/pm_suspend.S | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index 4e9eb4f57f16..be9764e8d3fa 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S
@@ -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 */
--
2.7.4