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

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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: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Bjorn Andersson 2017-08-29 16:13:36 -07:00
parent eea07023e6
commit 2b41d6c8e6
3 changed files with 16 additions and 9 deletions
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7
Documentation/devicetree/bindings/remoteproc/qcom,adsp.txt
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@ -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

5
Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
View File

@ -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.

13
Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
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@ -1,11 +1,12 @@
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