From 2b522a22243938dd7613e09c954172b1fa6217f5 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea Date: Thu, 15 Apr 2021 13:50:01 +0300 Subject: [PATCH 211/247] ARM: at91: pm: wait for ddr power mode off Wait for DDR power mode off before shutting down the core. Signed-off-by: Claudiu Beznea Signed-off-by: Nicolas Ferre Link: https://lore.kernel.org/r/20210415105010.569620-16-claudiu.beznea@microchip.com --- arch/arm/mach-at91/pm_suspend.S | 5 +++++ 1 file changed, 5 insertions(+) --- 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