[PATCH v3 5/6] dt-bindings: nvmem: Add bindings for ZynqMP nvmem driver
From: Nava kishore Manne <hidden>
Date: 2019-01-20 17:40:21
Also in:
linux-devicetree, lkml
Subsystem:
nvmem framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Srinivas Kandagatla, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add documentation to describe Xilinx ZynqMP nvmem driver bindings. Signed-off-by: Nava kishore Manne <redacted> --- Changes for v3: -Added nvmem node as child of FW. Since nvmem driver is a provider. .../bindings/nvmem/xlnx,zynqmp-nvmem.txt | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt
diff --git a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt
new file mode 100644
index 000000000000..2043c8284f8c
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt@@ -0,0 +1,47 @@ +-------------------------------------------------------------------------- += Zynq UltraScale+ MPSoC nvmem firmware driver binding = +-------------------------------------------------------------------------- +The nvmem_firmware node provides access to the hardware related data +like soc revision, IDCODE... etc, By using the firmware interface. + +Required properties: +- compatible: should be "xlnx,zynqmp-nvmem-fw" + += Data cells = +Are child nodes of silicon id, bindings of which as described in +bindings/nvmem/nvmem.txt + +------- + Example +------- +firmware { + zynqmp_firmware: zynqmp-firmware { + compatible = "xlnx,zynqmp-firmware"; + method = "smc"; + + nvmem_firmware { + compatible = "xlnx,zynqmp-nvmem-fw"; + #address-cells = <1>; + #size-cells = <1>; + + /* Data cells */ + soc_revision: soc_revision { + reg = <0x0 0x4>; + }; + }; + }; +}; + += Data consumers = +Are device nodes which consume nvmem data cells. + +For example: + pcap { + ... + + nvmem-cells = <&soc_revision>; + nvmem-cell-names = "soc_revision"; + + ... + }; +
--
2.18.0
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