[PATCH v5] dt-bindings: mailbox: qcom: Document Maili CPUCP mailbox controller

[PATCH v5] dt-bindings: mailbox: qcom: Document Maili CPUCP mailbox controller

[Taniya Das]

Document the CPU Control Processor (CPUCP) mailbox controller for the
Qualcomm Maili SoC. It is software compatible with the X1E80100 CPUCP
mailbox controller and uses it as a fallback compatible string.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Taniya Das <taniya.das@oss.qualcomm.com>
---
Changes in v5:
- The RPMH, TCSR and GCC bindings and the Hawi GCC driver extension
  were picked up from v4 and merged; only the CPUCP mailbox controller
  binding remains in this revision.
- No functional changes to the remaining CPUCP mailbox binding.
- Link to v4: https://lore.kernel.org/r/20260730-maili_initial_clock-v4-0-ed52ade264f0@oss.qualcomm.com

clk: qcom: Introduce initial clock controllers for Maili SoC

Introduce the initial set of clock controller bindings and driver
support for the upcoming Qualcomm Maili SoC.

Maili is a new mobile SoC from Qualcomm. It is a derivative of the
Hawi SoC and shares most of its clock topology. Where the hardware is
identical, Maili reuses the existing Hawi drivers via fallback
compatible strings. Where Maili diverges — specifically in the Global
Clock Controller (GCC), which carries an additional QUPv3 wrapper
(WRAP5) — the Hawi GCC driver is extended to handle both SoCs.

The series covers the following clock controllers:

  - RPMH clock controller: identical to Hawi; uses qcom,hawi-rpmh-clk
    as fallback.
  - TCSR clock controller: identical to Hawi; uses qcom,hawi-tcsrcc
    as fallback.
  - Global Clock Controller (GCC): extends the Hawi GCC driver with
    eight additional QUPV3 WRAP5 clocks present only on Maili.
  - CPUCP mailbox controller: software-compatible with X1E80100; uses
    qcom,x1e80100-cpucp-mbox as fallback.

The devicetree for Maili will be upstreamed later.

Changes in v4:
  - Rebase the binding of tcsr to linux-next.
  - Add RB-by from Konrad Dybcio on the GCC driver patch.
  - Link to v3: https://lore.kernel.org/r/20260724-maili_initial_clock-v3-0-45b577241c91@oss.qualcomm.com

Changes in v3:
  - Update the comment for extending the array appropriately size.
  - Add RB-by [Krzysztof] from v2
  - Link to v2: https://lore.kernel.org/r/20260713-maili_initial_clock-v2-0-79548f0bb58f@oss.qualcomm.com

Changes in v2:
  - Split the new Maili-only QUPv3 WRAP5 clock IDs out of
    qcom,hawi-gcc.h into a new qcom,maili-gcc.h header (which includes
    qcom,hawi-gcc.h), instead of adding them directly to the Hawi
    header. [Krzysztof]
  - Update the GCC driver to include the maili-gcc header.
  - Link to v1: https://lore.kernel.org/r/20260618-maili_initial_clock-v1-0-d6ede0352113@oss.qualcomm.com
---
 Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml b/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
index 03359479d926a623c467f1b8ba857d787366d411..2185920e1b5d2154a23b67905106f35e0b71eee9 100644
--- a/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
+++ b/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
@@ -21,6 +21,7 @@ properties:
               - qcom,glymur-cpucp-mbox
               - qcom,hawi-cpucp-mbox
               - qcom,kaanapali-cpucp-mbox
+              - qcom,maili-cpucp-mbox
               - qcom,nord-cpucp-mbox
               - qcom,sm8750-cpucp-mbox
           - const: qcom,x1e80100-cpucp-mbox

---
base-commit: af5f12805e5cefa4fe68d6127c7e1fb78cd5535c
change-id: 20260617-maili_initial_clock-c7e2b4530d80

Best regards,
-- 
Taniya Das <taniya.das@oss.qualcomm.com>