Re: [PATCH v3 1/2] dt-bindings: arm: Add qcom,qmi-id for remote etm

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On 2024/8/23 15:39, Krzysztof Kozlowski wrote:
On Fri, Aug 23, 2024 at 03:16:07PM +0800, Jinlong Mao wrote:


On 2024/8/22 15:41, Krzysztof Kozlowski wrote:
On Wed, Aug 21, 2024 at 11:41:18PM -0700, Mao Jinlong wrote:
qcom,qmi-id is the instance id used by qmi API to communicate with
remote processor.

Signed-off-by: Mao Jinlong <quic_jinlmao@xxxxxxxxxxx>
---
   .../bindings/arm/qcom,coresight-remote-etm.yaml        | 10 ++++++++++
   1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml
index 4fd5752978cd..27e5f18bfedf 100644
--- a/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml
@@ -20,6 +20,13 @@ properties:
     compatible:
       const: qcom,coresight-remote-etm
+  qcom,qmi-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This id is used by qmi API to communicate with remote processor for
+      enabling and disabling remote etm. Each processor has its unique instance
+      id.
+
     out-ports:
       $ref: /schemas/graph.yaml#/properties/ports
       additionalProperties: false
@@ -31,6 +38,7 @@ properties:
   required:
     - compatible
+  - qcom,qmi-id

That's an ABI break.

Best regards,
Krzysztof
Hi Krzysztof,

Sorry, I didn't get your point.
Could you please share more details ?

Adding new required properties is an ABI break. Nothing in commit msg
explained why this is okay or even needed.

Best regards,
Krzysztof

Thank you. I will update in the commit msg.





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