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authorLeo Yan <leo.yan@linaro.org>2019-05-02 10:54:04 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-05-02 19:12:21 +0200
commitd3b18ad63dca3ff3b5a169cbbe629b1d039a4483 (patch)
tree427708d984534de7b29dc94e72ce3cb407b7b0c6
parent5c84b87bb1ee7ce8e0849ce2c1b3fecf4faa4c82 (diff)
downloadcoresight-d3b18ad63dca3ff3b5a169cbbe629b1d039a4483.tar.gz
dt-bindings: arm: coresight: Unify funnel DT binding
Following the same fashion with replicator DT binding, this patch is to unify the DT binding for funnel to support static and dynamic modes; finally we get the funnel DT binding as below: Before patch: Static funnel, aka. non-configurable funnel: Not supported; Dynamic funnel, aka. configurable funnel: "arm,coresight-funnel", "arm,primecell"; After patch: Static funnel: "arm,coresight-static-funnel"; Dynamic funnel: "arm,coresight-dynamic-funnel", "arm,primecell"; "arm,coresight-funnel", "arm,primecell"; (obsolete) At the end of this patch, it gives an example for static funnel DT binding, and updates the dynamic funnel example. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Wanglai Shi <shiwanglai@hisilicon.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--Documentation/devicetree/bindings/arm/coresight.txt53
1 files changed, 48 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
index d02d160fa8ac..8a88ddebc1a2 100644
--- a/Documentation/devicetree/bindings/arm/coresight.txt
+++ b/Documentation/devicetree/bindings/arm/coresight.txt
@@ -8,7 +8,8 @@ through the intermediate links connecting the source to the currently selected
sink. Each CoreSight component device should use these properties to describe
its hardware characteristcs.
-* Required properties for all components *except* non-configurable replicators:
+* Required properties for all components *except* non-configurable replicators
+ and non-configurable funnels:
* compatible: These have to be supplemented with "arm,primecell" as
drivers are using the AMBA bus interface. Possible values include:
@@ -24,8 +25,10 @@ its hardware characteristcs.
discovered at boot time when the device is probed.
"arm,coresight-tmc", "arm,primecell";
- - Trace Funnel:
- "arm,coresight-funnel", "arm,primecell";
+ - Trace Programmable Funnel:
+ "arm,coresight-dynamic-funnel", "arm,primecell";
+ "arm,coresight-funnel", "arm,primecell"; (OBSOLETE. For
+ backward compatibility and will be removed)
- Embedded Trace Macrocell (version 3.x) and
Program Flow Trace Macrocell:
@@ -65,7 +68,7 @@ its hardware characteristcs.
"stm-stimulus-base", each corresponding to the areas defined in "reg".
* Required properties for devices that don't show up on the AMBA bus, such as
- non-configurable replicators:
+ non-configurable replicators and non-configurable funnels:
* compatible: Currently supported value is (note the absence of the
AMBA markee):
@@ -74,6 +77,9 @@ its hardware characteristcs.
"arm,coresight-replicator"; (OBSOLETE. For backward
compatibility and will be removed)
+ - Coresight Non-configurable Funnel:
+ "arm,coresight-static-funnel";
+
* port or ports: see "Graph bindings for Coresight" below.
* Optional properties for ETM/PTMs:
@@ -203,8 +209,45 @@ Example:
};
};
+ funnel {
+ /*
+ * non-configurable funnel don't show up on the AMBA
+ * bus. As such no need to add "arm,primecell".
+ */
+ compatible = "arm,coresight-static-funnel";
+ clocks = <&crg_ctrl HI3660_PCLK>;
+ clock-names = "apb_pclk";
+
+ out-ports {
+ port {
+ combo_funnel_out: endpoint {
+ remote-endpoint = <&top_funnel_in>;
+ };
+ };
+ };
+
+ in-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ combo_funnel_in0: endpoint {
+ remote-endpoint = <&cluster0_etf_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ combo_funnel_in1: endpoint {
+ remote-endpoint = <&cluster1_etf_out>;
+ };
+ };
+ };
+ };
+
funnel@20040000 {
- compatible = "arm,coresight-funnel", "arm,primecell";
+ compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
reg = <0 0x20040000 0 0x1000>;
clocks = <&oscclk6a>;