[PATCH v5 5/9] dt-bindings: fsi: Document the FSI controller common properties

Eddie James
2024-05-14T19:54:53Z

Since there are multiple FSI controllers documented, the common
properties should be documented separately and then referenced
from the specific controller documentation.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
Changes since v4:
- Add interrupt controller properties
- Add clock-frequency property to FSI controller and CFAM
- Add detail to chip-id property description

.../bindings/fsi/fsi-controller.yaml | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fsi/fsi-controller.yaml

diff --git a/Documentation/devicetree/bindings/fsi/fsi-controller.yaml b/Documentation/devicetree/bindings/fsi/fsi-controller.yaml
new file mode 100644
index 0000000000000..8620e4da6de77
--- /dev/null
+++ b/Documentation/devicetree/bindings/fsi/fsi-controller.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fsi/fsi-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: FSI Controller Common Properties
+
+maintainers:
+ - Eddie James <eajames@linux.ibm.com>
+
+description:
+ FSI (FRU (Field Replaceable Unit) Service Interface) is a two wire bus. The
+ FSI bus is connected to a CFAM (Common FRU Access Macro) which contains
+ various engines such as I2C controllers, SPI controllers, etc.
+
+properties:
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 0
+
+ '#interrupt-cells':
+ const: 1
+
+ clock-frequency:
+ minimum: 1
+ maximum: 200000000
+
+ interrupt-controller: true
+
+ no-scan-on-init:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ The FSI controller cannot scan the bus during initialization.
+
+patternProperties:
+ "cfam@[0-9a-f],[0-9a-f]":
+ type: object
+ properties:
+ chip-id:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Processor index, a global unique chip ID which is used to identify
+ the physical location of the chip in a system specific way.
+
+ clock-frequency:
+ minimum: 1
+ maximum: 100000000
+
+ reg:
+ maxItems: 1
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 1
+
+ required:
+ - reg
+
+ additionalProperties: true
+
+additionalProperties: true
--
2.39.3