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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>
This commit is contained in:
Leo Yan 2019-05-02 10:54:04 -06:00 committed by Greg Kroah-Hartman
parent 5c84b87bb1
commit d3b18ad63d
1 changed files with 48 additions and 5 deletions
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53
Documentation/devicetree/bindings/arm/coresight.txt
View File

@ -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>;