ARM: dts: at91: sama5d2: add sfrbu

SFRBU, the Special Function Registers Backup manage specific aspects of the
integrated memory, bridge implementations, processor and other
functionality not controlled elsewhere.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/Documentation/devicetree/bindings/arm/atmel-at91.txt b/Documentation/devicetree/bindings/arm/atmel-at91.txt
index 29737b9..799af90 100644 (file)
--- a/Documentation/devicetree/bindings/arm/atmel-at91.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-at91.txt
@@ -217,7 +217,8 @@ memory, bridge implementations, processor and other functionality not controlled
 elsewhere.
 
 required properties:
-- compatible: Should be "atmel,<chip>-sfr", "syscon".
+- compatible: Should be "atmel,<chip>-sfr", "syscon" or
+       "atmel,<chip>-sfrbu", "syscon"
   <chip> can be "sama5d3", "sama5d4" or "sama5d2".
 - reg: Should contain registers location and length
 

diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index 22332be..468ef9c 100644 (file)
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -1305,6 +1305,11 @@
                                status = "okay";
                        };
 
+                       sfrbu: sfr@fc05c000 {
+                               compatible = "atmel,sama5d2-sfrbu", "syscon";
+                               reg = <0xfc05c000 0x20>;
+                       };
+
                        chipid@fc069000 {
                                compatible = "atmel,sama5d2-chipid";
                                reg = <0xfc069000 0x8>;