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Commit 2b41d6c8 authored by Bjorn Andersson's avatar Bjorn Andersson
Browse files

dt-bindings: soc: qcom: Extend GLINK to cover SMEM 



In addition to using GLINK for communication with the RPM it can be
used ontop of SMEM for communicating with remoteprocs, extend the
binding to also describe this case and reference the GLINK binding from
the affected remoteproc bindings.

Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent eea07023

Documentation/devicetree/bindings/remoteproc/qcom,adsp.txt

+4 −3
Original line number Diff line number Diff line
@@ -63,9 +63,10 @@ on the Qualcomm ADSP Hexagon core. 




= SUBNODES

The adsp node may have an subnode named "smd-edge" that describes the SMD edge,

channels and devices related to the ADSP.  See ../soc/qcom/qcom,smd.txt for

details on how to describe the SMD edge.

The adsp node may have an subnode named either "smd-edge" or "glink-edge" that

describes the communication edge, channels and devices related to the ADSP.

See ../soc/qcom/qcom,smd.txt and ../soc/qcom/qcom,glink.txt for details on how

to describe these.





= EXAMPLE

Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt

+5 −0
Original line number Diff line number Diff line
@@ -90,6 +90,11 @@ the memory regions used by the Hexagon firmware. Each sub-node must contain: 
	Value type: <phandle>

	Definition: reference to the reserved-memory for the region



The Hexagon node may also have an subnode named either "smd-edge" or

"glink-edge" that describes the communication edge, channels and devices

related to the Hexagon.  See ../soc/qcom/qcom,smd.txt and

../soc/qcom/qcom,glink.txt for details on how to describe these.



= EXAMPLE

The following example describes the resources needed to boot control the

Hexagon, as it is found on MSM8974 boards.

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

+7 −6
Original line number Diff line number Diff line 
Qualcomm RPM GLINK binding

Qualcomm GLINK edge binding



This binding describes the Qualcomm RPM GLINK, a fifo based mechanism for

communication with the Resource Power Management system on various Qualcomm

platforms.

This binding describes a Qualcomm GLINK edge, a fifo based mechanism for

communication between subsystem-pairs on various Qualcomm platforms. Two types

of edges can be described by the binding; the GLINK RPM edge and a SMEM based

edge.



- compatible:

	Usage: required

	Usage: required for glink-rpm

	Value type: <stringlist>

	Definition: must be "qcom,glink-rpm"
@@ -16,7 +17,7 @@ platforms. 
		    signal this processor about communication related events



- qcom,rpm-msg-ram:

	Usage: required

	Usage: required for glink-rpm

	Value type: <prop-encoded-array>

	Definition: handle to RPM message memory resource