Re: [RFC 1/7] dt-bindings: mailbox: qcom: Add CPUCP mailbox controller bindings

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On 1/30/24 18:12, Rob Herring wrote:
On Wed, Jan 17, 2024 at 11:04:52PM +0530, Sibi Sankar wrote:
Add devicetree binding for CPUSS Control Processor (CPUCP) mailbox
controller.

Signed-off-by: Sibi Sankar <quic_sibis@xxxxxxxxxxx>
---
  .../bindings/mailbox/qcom,cpucp-mbox.yaml     | 51 +++++++++++++++++++
  1 file changed, 51 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml

diff --git a/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml b/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
new file mode 100644
index 000000000000..2617e5555acb
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mailbox/qcom,cpucp-mbox.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. CPUCP Mailbox Controller
+
+maintainers:
+  - Sibi Sankar <quic_sibis@xxxxxxxxxxxxxxxx>
+
+description:
+  The CPUSS Control Processor (CPUCP) mailbox controller enables communication
+  between AP and CPUCP by acting as a doorbell between them.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - qcom,x1e80100-cpucp-mbox
+      - const: qcom,cpucp-mbox

A generic fallback implies multiple devices use the same unchanged
block. That seems doubtful given you have not defined any others and
given Konrad's comments.

FWIW Sibi and I talked about this a bit off-list, this mailbox is
apparently new and has nothing to do with what I mentioned on other
platforms

Konrad




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