ARM: dts: Add keep-power-in-suspend to WiFi SDIO node for exynos5250-snow

The Marvell mwifiex driver prevents the system to enter into a suspend
state if the card power is not preserved during a suspend/resume cycle.

So Suspend-to-RAM and Suspend-to-idle are failing on Exynos5250 Snow.

Add the keep-power-in-suspend Power Management property to the SDIO/MMC
node so the mwifiex suspend handler doesn't fail and the system is able
to enter into a suspend state.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
index 2657e842e5a5..1eca97ee4bd6 100644
--- a/arch/arm/boot/dts/exynos5250-snow.dts
+++ b/arch/arm/boot/dts/exynos5250-snow.dts
@@ -567,6 +567,7 @@
         num-slots = <1>;
         broken-cd;
         cap-sdio-irq;
+        keep-power-in-suspend;
         card-detect-delay = <200>;
         samsung,dw-mshc-ciu-div = <3>;
         samsung,dw-mshc-sdr-timing = <2 3>;