From 3f1b66be4aaa5dbe0a16197bfdfc355cf1da7701 Mon Sep 17 00:00:00 2001 From: Nava kishore Manne Date: Fri, 25 Jan 2019 13:16:53 +0530 Subject: dt-bindings: reset: Add bindings for ZynqMP reset driver Add documentation to describe Xilinx ZynqMP reset driver bindings. Signed-off-by: Nava kishore Manne Signed-off-by: Jolly Shah Reviewed-by: Rob Herring Signed-off-by: Michal Simek --- .../bindings/reset/xlnx,zynqmp-reset.txt | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt (limited to 'Documentation/devicetree/bindings/reset') diff --git a/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt new file mode 100644 index 000000000000..27a45fe5ecf1 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt @@ -0,0 +1,52 @@ +-------------------------------------------------------------------------- + = Zynq UltraScale+ MPSoC reset driver binding = +-------------------------------------------------------------------------- +The Zynq UltraScale+ MPSoC has several different resets. + +See Chapter 36 of the Zynq UltraScale+ MPSoC TRM (UG) for more information +about zynqmp resets. + +Please also refer to reset.txt in this directory for common reset +controller binding usage. + +Required Properties: +- compatible: "xlnx,zynqmp-reset" +- #reset-cells: Specifies the number of cells needed to encode reset + line, should be 1 + +------- +Example +------- + +firmware { + zynqmp_firmware: zynqmp-firmware { + compatible = "xlnx,zynqmp-firmware"; + method = "smc"; + + zynqmp_reset: reset-controller { + compatible = "xlnx,zynqmp-reset"; + #reset-cells = <1>; + }; + }; +}; + +Specifying reset lines connected to IP modules +============================================== + +Device nodes that need access to reset lines should +specify them as a reset phandle in their corresponding node as +specified in reset.txt. + +For list of all valid reset indicies see + + +Example: + +serdes: zynqmp_phy@fd400000 { + ... + + resets = <&zynqmp_reset ZYNQMP_RESET_SATA>; + reset-names = "sata_rst"; + + ... +}; -- cgit v1.2.3