Add devicetree binding for CPUSS Control Processor (CPUCP) mailbox
controller.

Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
---
 .../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..1f7e1204cda0
--- /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@qti.qualcomm.com>
+
+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,sc7280-cpucp-mbox
+      - const: qcom,cpucp-mbox
+
+  reg:
+    items:
+      - description: CPUCP tx register region
+      - description: CPUCP rx register region
+
+  interrupts:
+    maxItems: 1
+
+  "#mbox-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#mbox-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    mailbox@17400000 {
+        compatible = "qcom,sc7280-cpucp-mbox", "qcom,cpucp-mbox";
+        reg = <0x0 0x17c00000 0x0 0x10>, <0x0 0x18590300 0x0 0x700>;
+        interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
+        #mbox-cells = <0>;
+    };
-- 
2.7.4

On Wed, 14 Sep 2022 11:33:05 +0530, Sibi Sankar wrote:
> Add devicetree binding for CPUSS Control Processor (CPUCP) mailbox
> controller.
> 
> Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
> ---
>  .../bindings/mailbox/qcom,cpucp-mbox.yaml          | 51 ++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.example.dtb: mailbox@17400000: reg: [[0, 398458880], [0, 16], [0, 408486656], [0, 1792]] is too long
	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

On 9/14/22 4:38 PM, Rob Herring wrote:
> On Wed, 14 Sep 2022 11:33:05 +0530, Sibi Sankar wrote:
>> Add devicetree binding for CPUSS Control Processor (CPUCP) mailbox
>> controller.
>>
>> Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
>> ---
>>   .../bindings/mailbox/qcom,cpucp-mbox.yaml          | 51 ++++++++++++++++++++++
>>   1 file changed, 51 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
>>
> 
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
> 
> yamllint warnings/errors:
> 
> dtschema/dtc warnings/errors:
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.example.dtb: mailbox@17400000: reg: [[0, 398458880], [0, 16], [0, 408486656], [0, 1792]] is too long
> 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mailbox/qcom,cpucp-mbox.yaml
> 
> doc reference errors (make refcheckdocs):

yup noticed that I hadn't included these fixes when I sent the patches
out. Will fix it in the next re-spin.

> 
> See https://patchwork.ozlabs.org/patch/
> 
> This check can fail if there are any dependencies. The base for a patch
> series is generally the most recent rc1.
> 
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
> 
> pip3 install dtschema --upgrade
> 
> Please check and re-submit.
>