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Device Tree Bindings for the Xilinx Zynq MPSoC Power Management
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The zynqmp-power node describes the power management configurations.
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It will control remote suspend/shutdown interfaces.
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Required properties:
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- compatible: Must contain: "xlnx,zynqmp-power"
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- interrupts: Interrupt specifier
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Optional properties:
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- mbox-names : Name given to channels seen in the 'mboxes' property.
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"tx" - Mailbox corresponding to transmit path
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"rx" - Mailbox corresponding to receive path
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- mboxes : Standard property to specify a Mailbox. Each value of
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the mboxes property should contain a phandle to the
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mailbox controller device node and an args specifier
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that will be the phandle to the intended sub-mailbox
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child node to be used for communication. See
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Documentation/devicetree/bindings/mailbox/mailbox.txt
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for more details about the generic mailbox controller
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and client driver bindings. Also see
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Documentation/devicetree/bindings/mailbox/ \
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xlnx,zynqmp-ipi-mailbox.txt for typical controller that
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is used to communicate with this System controllers.
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--------
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Examples
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--------
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Example with interrupt method:
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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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zynqmp_power: zynqmp-power {
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compatible = "xlnx,zynqmp-power";
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interrupts = <0 35 4>;
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};
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};
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};
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Example with IPI mailbox method:
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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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zynqmp_power: zynqmp-power {
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compatible = "xlnx,zynqmp-power";
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interrupt-parent = <&gic>;
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interrupts = <0 35 4>;
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mboxes = <&ipi_mailbox_pmu0 0>,
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<&ipi_mailbox_pmu0 1>;
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mbox-names = "tx", "rx";
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};
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};
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};
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