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author | Nava kishore Manne <nava.manne@xilinx.com> | 2019-01-25 13:16:53 +0530 |
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committer | Michal Simek <michal.simek@xilinx.com> | 2019-01-29 14:07:10 +0100 |
commit | 3f1b66be4aaa5dbe0a16197bfdfc355cf1da7701 (patch) | |
tree | 0e95db2128f5fce1ae9138263b39cdde83b4e17d /Documentation/devicetree/bindings/reset | |
parent | bc3843d4d357061d92e7800c7da342e2d068772c (diff) | |
download | linux-3f1b66be4aaa5dbe0a16197bfdfc355cf1da7701.tar.bz2 |
dt-bindings: reset: Add bindings for ZynqMP reset driver
Add documentation to describe Xilinx ZynqMP reset driver
bindings.
Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'Documentation/devicetree/bindings/reset')
-rw-r--r-- | Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt | 52 |
1 files changed, 52 insertions, 0 deletions
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 +<dt-bindings/reset/xlnx-zynqmp-resets.h> + +Example: + +serdes: zynqmp_phy@fd400000 { + ... + + resets = <&zynqmp_reset ZYNQMP_RESET_SATA>; + reset-names = "sata_rst"; + + ... +}; |