From 2f5bc307be2480ba89e4c5d118f406f04a4a7299 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Tue, 16 Jun 2015 14:12:57 +0200 Subject: ARM: mvebu: fix suspend to RAM on big-endian configurations The current Armada XP suspend to RAM implementation, as added in commit 27432825ae19f ("ARM: mvebu: Armada XP GP specific suspend/resume code") does not handle big-endian configurations properly: the small bit of assembly code putting the DRAM in self-refresh and toggling the GPIOs to turn off power forgets to convert the values to little-endian. This commit fixes that by making sure the two values we will write to the DRAM controller register and GPIO register are already in little-endian before entering the critical assembly code. Signed-off-by: Thomas Petazzoni Cc: # v3.19+ Fixes: 27432825ae19f ("ARM: mvebu: Armada XP GP specific suspend/resume code") --- arch/arm/mach-mvebu/pm-board.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm/mach-mvebu') diff --git a/arch/arm/mach-mvebu/pm-board.c b/arch/arm/mach-mvebu/pm-board.c index 6dfd4ab97b2a..301ab38d38ba 100644 --- a/arch/arm/mach-mvebu/pm-board.c +++ b/arch/arm/mach-mvebu/pm-board.c @@ -43,6 +43,9 @@ static void mvebu_armada_xp_gp_pm_enter(void __iomem *sdram_reg, u32 srcmd) for (i = 0; i < ARMADA_XP_GP_PIC_NR_GPIOS; i++) ackcmd |= BIT(pic_raw_gpios[i]); + srcmd = cpu_to_le32(srcmd); + ackcmd = cpu_to_le32(ackcmd); + /* * Wait a while, the PIC needs quite a bit of time between the * two GPIO commands. -- cgit