ARM: ux500: define the backupram in the device tree

The Ux500 SOCs have a special backup RAM that needs to be
defined in the device tree.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi
index f024a1c0de8b57b42de5ec96cad452f39aae23e2..853684ad777337771b48be2982a7c525f95ef1d6 100644 (file)
--- a/arch/arm/boot/dts/ste-dbx5x0.dtsi
+++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi
@@ -190,6 +190,15 @@
                        reg = <0xa0410000 0x100>;
                };
 
+               /*
+                * The backup RAM is used for retention during sleep
+                * and various things like spin tables
+                */
+               backupram@80150000 {
+                       compatible = "ste,dbx500-backupram";
+                       reg = <0x80150000 0x2000>;
+               };
+
                L2: l2-cache {
                        compatible = "arm,pl310-cache";
                        reg = <0xa0412000 0x1000>;