[PATCH] dt-bindings: soc: airoha: Add the pbus-csr node for EN7581 SoC

[PATCH] dt-bindings: soc: airoha: Add the pbus-csr node for EN7581 SoC

[Lorenzo Bianconi]

Introduce pbus-csr document bindings for EN7581 SoC. The airoha pbus-csr
block provides a configuration interface for the PBUS controller used to
detect if a given address is accessible on PCIe controller.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 .../soc/airoha/airoha,en7581-pbus-csr.yaml         | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/airoha/airoha,en7581-pbus-csr.yaml b/Documentation/devicetree/bindings/soc/airoha/airoha,en7581-pbus-csr.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..0524e4189da39205d982a3940ffe90b2aa35d72e
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/airoha/airoha,en7581-pbus-csr.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/airoha/airoha,en7581-pbus-csr.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha Pbus CSR Controller for EN7581 SoC
+
+maintainers:
+  - Lorenzo Bianconi <lorenzo@kernel.org>
+
+description:
+  The airoha pbus-csr block provides a configuration interface for the PBUS
+  controller used to detect if a given address is accessible on PCIe
+  controller.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - airoha,en7581-pbus-csr
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+      syscon@1fbe3400 {
+        compatible = "airoha,en7581-pbus-csr", "syscon";
+        reg = <0x0 0x1fbe3400 0x0 0xff>;
+      };
+    };

---
base-commit: d71fc910c58ed85a2ad5143502030bff73fc2088
change-id: 20250308-en7581-pbus_csr-binding-974e1b40fb36

Best regards,
-- 
Lorenzo Bianconi <lorenzo@kernel.org>

Re: [PATCH] dt-bindings: soc: airoha: Add the pbus-csr node for EN7581 SoC

[Rob Herring]

On Sat, Mar 08, 2025 at 09:35:45AM +0100, Lorenzo Bianconi wrote:
> Introduce pbus-csr document bindings for EN7581 SoC. The airoha pbus-csr
> block provides a configuration interface for the PBUS controller used to
> detect if a given address is accessible on PCIe controller.

Assuming the binding is complete, you can just add the compatible to 
syscon.yaml.

Rob