On 04/06/2019 12:21 PM, Leo Yan wrote:
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-funnel", "arm,primecell"; (obsolete)
"arm,coresight-dynamic-funnel", "arm,primecell";
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.poir...@linaro.org>
Cc: Suzuki K Poulose <suzuki.poul...@arm.com>
Cc: Wanglai Shi <shiwang...@hisilicon.com>
Signed-off-by: Leo Yan <leo....@linaro.org>
---
.../devicetree/bindings/arm/coresight.txt | 52 +++++++++++++++++--
1 file changed, 48 insertions(+), 4 deletions(-)
diff --git a/Documentation/devicetree/bindings/arm/coresight.txt
b/Documentation/devicetree/bindings/arm/coresight.txt
index f8f794869af2..f8ad11a17cd5 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 +25,11 @@ its hardware characteristcs.
discovered at boot time when the device is probed.
"arm,coresight-tmc", "arm,primecell";
- - Trace Funnel:
+ - Trace Programmable Funnel, the compatible string
+ "arm,coresight-funnel" is obsolete, keep it to support
+ the old DT bindings:
"arm,coresight-funnel", "arm,primecell";
+ "arm,coresight-dynamic-funnel", "arm,primecell";
Same comments as the first patch here.
+ 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 {
Should we rename this to say dynamic_funnel@2004000 { ?
- compatible = "arm,coresight-funnel", "arm,primecell";
+ compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
reg = <0 0x20040000 0 0x1000>;
Rest looks fine to me.
Suzuki
