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dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox

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Add IPI mailbox property and its example in xilinx zynqmp-power
documentation.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Rajan Vaja 2019-12-02 02:38:50 -08:00 committed by Michal Simek
parent 461011b1e1
commit a117daa833
1 changed files with 39 additions and 3 deletions
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42
Documentation/devicetree/bindings/power/reset/xlnx,zynqmp-power.txt
View file

@ -8,9 +8,27 @@ Required properties:
- compatible: Must contain: "xlnx,zynqmp-power"
- interrupts: Interrupt specifier
-------
Example
-------
Optional properties:
- mbox-names : Name given to channels seen in the 'mboxes' property.
"tx" - Mailbox corresponding to transmit path
"rx" - Mailbox corresponding to receive path
- mboxes : Standard property to specify a Mailbox. Each value of
the mboxes property should contain a phandle to the
mailbox controller device node and an args specifier
that will be the phandle to the intended sub-mailbox
child node to be used for communication. See
Documentation/devicetree/bindings/mailbox/mailbox.txt
for more details about the generic mailbox controller
and client driver bindings. Also see
Documentation/devicetree/bindings/mailbox/ \
xlnx,zynqmp-ipi-mailbox.txt for typical controller that
is used to communicate with this System controllers.
--------
Examples
--------
Example with interrupt method:
firmware {
zynqmp_firmware: zynqmp-firmware {
@ -23,3 +41,21 @@ firmware {
};
};
};
Example with IPI mailbox method:
firmware {
zynqmp_firmware: zynqmp-firmware {
compatible = "xlnx,zynqmp-firmware";
method = "smc";
zynqmp_power: zynqmp-power {
compatible = "xlnx,zynqmp-power";
interrupt-parent = <&gic>;
interrupts = <0 35 4>;
mboxes = <&ipi_mailbox_pmu0 0>,
<&ipi_mailbox_pmu0 1>;
mbox-names = "tx", "rx";
};
};
};