Add an interrupt property to CTCU device. The interrupt will be triggered
when the data size in the ETR buffer exceeds the threshlod of the
BYTECNTRVAL register. Programming a threshold in the BYTECNTRVAL register
of CTCU device will enable the interrupt.

Signed-off-by: Jie Gan <jie.gan@oss.qualcomm.com>
---
 .../bindings/arm/qcom,coresight-ctcu.yaml       | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml
index 843b52eaf872..ea05ad8f3dd3 100644
--- a/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml
@@ -39,6 +39,16 @@ properties:
     items:
       - const: apb
 
+  interrupts:
+    items:
+      - description: Byte cntr interrupt for etr0
+      - description: Byte cntr interrupt for etr1
+
+  interrupt-names:
+    items:
+      - const: etr0
+      - const: etr1
+
   in-ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
@@ -56,6 +66,8 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
     ctcu@1001000 {
         compatible = "qcom,sa8775p-ctcu";
         reg = <0x1001000 0x1000>;
@@ -63,6 +75,11 @@ examples:
         clocks = <&aoss_qmp>;
         clock-names = "apb";
 
+        interrupts = <GIC_SPI 270 IRQ_TYPE_EDGE_RISING>,
+                     <GIC_SPI 262 IRQ_TYPE_EDGE_RISING>;
+        interrupt-names = "etr0",
+                          "etr1";
+
         in-ports {
             #address-cells = <1>;
             #size-cells = <0>;
-- 
2.34.1

On Thu, Apr 10, 2025 at 09:33:27AM GMT, Jie Gan wrote:
> Add an interrupt property to CTCU device. The interrupt will be triggered
> when the data size in the ETR buffer exceeds the threshlod of the

typo: threshold?

> BYTECNTRVAL register. Programming a threshold in the BYTECNTRVAL register
> of CTCU device will enable the interrupt.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

On 4/10/2025 2:47 PM, Krzysztof Kozlowski wrote:
> On Thu, Apr 10, 2025 at 09:33:27AM GMT, Jie Gan wrote:
>> Add an interrupt property to CTCU device. The interrupt will be triggered
>> when the data size in the ETR buffer exceeds the threshlod of the
> 
> typo: threshold?

Will fix it in next version.

Thanks,
Jie

> 
>> BYTECNTRVAL register. Programming a threshold in the BYTECNTRVAL register
>> of CTCU device will enable the interrupt.
> 
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
> Best regards,
> Krzysztof
> 
>