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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/contrib/device-tree/Bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt
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Device Tree Bindings for the Xilinx Zynq MPSoC Firmware Interface

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The zynqmp-firmware node describes the interface to platform firmware.

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ZynqMP has an interface to communicate with secure firmware. Firmware

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driver provides an interface to firmware APIs. Interface APIs can be

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used by any driver to communicate to PMUFW(Platform Management Unit).

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These requests include clock management, pin control, device control,

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power management service, FPGA service and other platform management

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services.

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Required properties:

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 - compatible:	Must contain any of below:

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		"xlnx,zynqmp-firmware" for Zynq Ultrascale+ MPSoC

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		"xlnx,versal-firmware" for Versal

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 - method:	The method of calling the PM-API firmware layer.

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		Permitted values are:

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		  - "smc" : SMC #0, following the SMCCC

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		  - "hvc" : HVC #0, following the SMCCC

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-------

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Example

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-------

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Zynq Ultrascale+ MPSoC

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----------------------

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firmware {

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	zynqmp_firmware: zynqmp-firmware {

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		compatible = "xlnx,zynqmp-firmware";

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		method = "smc";

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		...

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	};

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};

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Versal

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------

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firmware {

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	versal_firmware: versal-firmware {

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		compatible = "xlnx,versal-firmware";

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		method = "smc";

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		...

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	};

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};

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