Merge "dt-bindings: soc: qcom: Add dt-bindings for the IPCC test driver"

The document describes the device tree binding for testing the IPCC

(Inter-Processor Communication Controller) driver. The test driver triggers a

self-ping onto itself. The expected behavior would be the driver raising

an interrupt using the mailbox interface onto the IPCC driver, which in turn

raises an interrupt on the IPCC hardware. Since the test driver is configured

as loopback, the interrupt generated should come back and hit the APPS

(Application Processor Subsystem). The IPCC driver would hear this interrupt

and forwards it to the IPCC test driver. Hence, the test exercises the inbound

and outbound paths of the driver.

For details on the IPCC driver, please see qcom,ipcc.txt

- compatible:

  Usage: required

  Value type: <string>

  Definition: Must be "qcom,ipcc-self-ping"

- interrupts-extended:

  Usage: required

  Value type: <prop-encoded-array>

  Definition: One entry specifying the phandle to the IPCC protocol, the APPS'

		client-id, signal-id and IRQ type.

- mboxes:

  Usage: required

  Value type: <prop-encoded-array>

  Definition: One entry specifying the phandle to the IPCC protocol, the APPS'

		client-id and the signal-id (same as interrupts-extended).

Example

-------

	ipcc_self_ping: ipcc-self-ping {

		compatible = "qcom,ipcc-self-ping";

		interrupts-extended = <&ipcc_mproc IPCC_CLIENT_APSS

				IPCC_MPROC_SIGNAL_SMP2P IRQ_TYPE_LEVEL_HIGH>;

		mboxes = <&ipcc_mproc IPCC_CLIENT_APSS IPCC_MPROC_SIGNAL_SMP2P>;

	};