[PATCH 15/24] ARM: at91: pm: wait for ddr power mode off

Claudiu Beznea
2021-03-31T11:01:14Z

Wait for DDR power mode off before shutting down the core.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
arch/arm/mach-at91/pm_suspend.S | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index 9c9e08fd8300..7396e18dd7e5 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S
@@ -980,6 +980,11 @@ ulp_exit:
mov tmp1, #0x1
str tmp1, [r0, #0x10]

+ /* Wait for it. */
+1: ldr tmp1, [r0, #0x10]
+ tst tmp1, #0x1
+ beq 1b
+
/* Shutdown */
ldr r0, .shdwc
mov tmp1, #0xA5000000
--
2.25.1