Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b6671e29 authored by Chris Lew's avatar Chris Lew Committed by Gerrit - the friendly Code Review server
Browse files

dt-bindings: soc: qcom: Introduce Glink Probe bindings 



The RPMSG over GLINK transport expects to be a subdev in a remote proc
node. This driver helps probe the glink transports when remote proc is
disabled.

Change-Id: I93ffff4a24f3c6bfcf5887ddf2415a81ae3f74bb
Signed-off-by: default avatarChris Lew <clew@codeaurora.org>
parent 50587ea5

Documentation/devicetree/bindings/soc/qcom/qcom,glink-probe.txt

0 → 100644
+69 −0
Original line number Diff line number Diff line 
Qualcomm Technologies, Inc. GLINK Probe



This binding describes the GLINK Probe driver, a device

that initializes the GLINK edge pairs within the system.



- compatible :

	Usage: required

	Value type: <stringlist>

	Definition: must be "qcom,glink"



= SUBNODES

The GLINK probe node must contain subnodes that describes the

edge-pairs. See qcom,glink.txt for details on how to describe them.



In addition to the properties in qcom,glink.txt, The GLINK Probe driver

requires the qcom,glink-label and transport type to be specified in the

subnodes.



- transport :

	Usage: required

	Value type: <stringlist>

	Definition: must be "smem", "spss", or "spi"



- qcom,glink-label :

	Usage: required

	Value type: <stringlist>

	Definition: specifies the identifier of the remote proc of this edge.



= GLINK_SSR

The GLINK probe driver also initializes the GLINK_SSR channel for the edges

that it brings up. The channel should be specified as a subnode to each edge. In

addition to the properties in qcom,glink.txt to specify a channel device node,

the qcom,notify-edges property must be defined.



- qcom,notify-edges :

	Usage: required

	Value type: <prop-encoded-array>

	Definition: list of phandles that specify the subsystems this glink edge

		    needs to receive ssr notifications about.



= EXAMPLE

qcom,glink {

	compatible = "qcom,glink";

	glink_modem: modem {

		transport = "smem";

		qcom,remote-pid = <0>;

		mboxes = <&apcs_glb 8>;

		mbox-names = "mpss_smem";

		interrupts = <GIC_SPI 449 IRQ_TYPE_EDGE_RISING>;



		qcom,modem_glink_ssr {

			qcom,glink-channels = "glink_ssr";

			qcom,notify-edges = <&glink_adsp>;

		};

	};



	glink_adsp: adsp {

		transport = "smem";

		qcom,remote-pid = <2>;

		mboxes = <&apcs_glb 4>;

		mbox-names = "adsp_smem";

		interrupts = <GIC_SPI 348 IRQ_TYPE_EDGE_RISING>;



		qcom,modem_glink_ssr {

			qcom,glink-channels = "glink_ssr";

			qcom,notify-edges = <&glink_modem>;

		};

	};

};