[PATCH v4 1/4] dt-bindings: arm: coresight: Add new compatible for static replicator

Leo Yan
2019-04-06T11:21:42Z

CoreSight uses below bindings for replicator:

Static replicator, aka. non-configurable replicator:
"arm,coresight-replicator";

Dynamic replicator, aka. configurable replicator:
"arm,coresight-dynamic-replicator", "arm,primecell";

The compatible string "arm,coresight-replicator" is not an explicit
naming to express the replicator is 'static'. To unify the naming
convention, this patch introduces a new compatible string
"arm,coresight-static-replicator" for the static replicator; the
compatible string "arm,coresight-replicator" is still kept thus we
can support the old DT binding, but tag it as obsolete and suggest
to use the new compatible string.

As result CoreSight replicator have below bindings:

Static replicator:
"arm,coresight-replicator"; (obsolete)
"arm,coresight-static-replicator";

Dynamic replicator:
"arm,coresight-dynamic-replicator", "arm,primecell";

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
Documentation/devicetree/bindings/arm/coresight.txt | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
index f8aff65ab921..f8f794869af2 100644
--- a/Documentation/devicetree/bindings/arm/coresight.txt
+++ b/Documentation/devicetree/bindings/arm/coresight.txt
@@ -69,7 +69,11 @@ its hardware characteristcs.

* compatible: Currently supported value is (note the absence of the
AMBA markee):
- - "arm,coresight-replicator"
+ - Coresight Non-configurable Replicator, the compatible string
+ "arm,coresight-replicator" is obsolete, keep it to support
+ the old DT bindings:
+ "arm,coresight-replicator";
+ "arm,coresight-static-replicator";

* port or ports: see "Graph bindings for Coresight" below.

@@ -169,7 +173,7 @@ Example:
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
- compatible = "arm,coresight-replicator";
+ compatible = "arm,coresight-static-replicator";

out-ports {
#address-cells = <1>;
--
2.17.1