From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/sram/rockchip-pmu-sram.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/sram/rockchip-pmu-sram.txt (limited to 'Documentation/devicetree/bindings/sram/rockchip-pmu-sram.txt') diff --git a/Documentation/devicetree/bindings/sram/rockchip-pmu-sram.txt b/Documentation/devicetree/bindings/sram/rockchip-pmu-sram.txt new file mode 100644 index 000000000..6b42fda30 --- /dev/null +++ b/Documentation/devicetree/bindings/sram/rockchip-pmu-sram.txt @@ -0,0 +1,16 @@ +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>; + }; -- cgit v1.2.3