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diff --git a/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt b/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt
deleted file mode 100644
index 6b42fda306ff..000000000000
--- a/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-Rockchip SRAM for pmu:
-------------------------------
-
-The sram of pmu is used to store the function of resume from maskrom(the 1st
-level loader). This is a common use of the "pmu-sram" because it keeps power
-even in low power states in the system.
-
-Required node properties:
-- compatible : should be "rockchip,rk3288-pmu-sram"
-- reg : physical base address and the size of the registers window
-
-Example:
-	sram@ff720000 {
-		compatible = "rockchip,rk3288-pmu-sram", "mmio-sram";
-		reg = <0xff720000 0x1000>;
-	};