Convert the Actions Semi Owl CMU bindings to DT schema.
Changes during conversion:
- Since all Actions Semi Owl SoCs utilize the internal low frequency
oscillator as a parent for some clocks, require it.
Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@xxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
v4: change double : to a single one in description
v4: add tags from Dooley, Kozlowski and Sadhasivam
v3: list the headers in the description
v3: match properties: order with required:
v3: add clocks as a required property
v3: drop unused example node label
v3: use the preferred four-space indentation for dts example
v2: drop address and size cells from example
---
.../bindings/clock/actions,owl-cmu.txt | 52 ----------------
.../bindings/clock/actions,owl-cmu.yaml | 60 +++++++++++++++++++
MAINTAINERS | 2 +-
3 files changed, 61 insertions(+), 53 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/actions,owl-cmu.txt
create mode 100644 Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml
diff --git a/Documentation/devicetree/bindings/clock/actions,owl-cmu.txt b/Documentation/devicetree/bindings/clock/actions,owl-cmu.txt
deleted file mode 100644
index d19885b7c..000000000
--- a/Documentation/devicetree/bindings/clock/actions,owl-cmu.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-* Actions Semi Owl Clock Management Unit (CMU)
-
-The Actions Semi Owl Clock Management Unit generates and supplies clock
-to various controllers within the SoC. The clock binding described here is
-applicable to S900, S700 and S500 SoC's.
-
-Required Properties:
-
-- compatible: should be one of the following,
- "actions,s900-cmu"
- "actions,s700-cmu"
- "actions,s500-cmu"
-- reg: physical base address of the controller and length of memory mapped
- region.
-- clocks: Reference to the parent clocks ("hosc", "losc")
-- #clock-cells: should be 1.
-- #reset-cells: should be 1.
-
-Each clock is assigned an identifier, and client nodes can use this identifier
-to specify the clock which they consume.
-
-All available clocks are defined as preprocessor macros in corresponding
-dt-bindings/clock/actions,s900-cmu.h or actions,s700-cmu.h or
-actions,s500-cmu.h header and can be used in device tree sources.
-
-External clocks:
-
-The hosc clock used as input for the plls is generated outside the SoC. It is
-expected that it is defined using standard clock bindings as "hosc".
-
-Actions Semi S900 CMU also requires one more clock:
- - "losc" - internal low frequency oscillator
-
-Example: Clock Management Unit node:
-
- cmu: clock-controller@e0160000 {
- compatible = "actions,s900-cmu";
- reg = <0x0 0xe0160000 0x0 0x1000>;
- clocks = <&hosc>, <&losc>;
- #clock-cells = <1>;
- #reset-cells = <1>;
- };
-
-Example: UART controller node that consumes clock generated by the clock
-management unit:
-
- uart: serial@e012a000 {
- compatible = "actions,s900-uart", "actions,owl-uart";
- reg = <0x0 0xe012a000 0x0 0x2000>;
- interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&cmu CLK_UART5>;
- };
diff --git a/Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml b/Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml
new file mode 100644
index 000000000..28396441b
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/actions,owl-cmu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Actions Semi Owl Clock Management Unit (CMU)
+
+maintainers:
+ - Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
+
+description: |
+ The Actions Semi Owl Clock Management Unit generates and supplies clock
+ to various controllers within the SoC.
+
+ See also:
+ include/dt-bindings/clock/actions,s500-cmu.h
+ include/dt-bindings/clock/actions,s700-cmu.h
+ include/dt-bindings/clock/actions,s900-cmu.h
+
+properties:
+ compatible:
+ enum:
+ - actions,s500-cmu
+ - actions,s700-cmu
+ - actions,s900-cmu
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: Host oscillator source
+ - description: Internal low frequency oscillator source
+
+ "#clock-cells":
+ const: 1
+
+ "#reset-cells":
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - "#clock-cells"
+ - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ clock-controller@e0160000 {
+ compatible = "actions,s900-cmu";
+ reg = <0xe0160000 0x1000>;
+ clocks = <&hosc>, <&losc>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 420d06d37..652c9822a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2016,7 +2016,7 @@ L: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers)
L: linux-actions@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/arm/actions.yaml
-F: Documentation/devicetree/bindings/clock/actions,owl-cmu.txt
+F: Documentation/devicetree/bindings/clock/actions,owl-cmu.yaml
F: Documentation/devicetree/bindings/dma/owl-dma.yaml
F: Documentation/devicetree/bindings/i2c/i2c-owl.yaml
F: Documentation/devicetree/bindings/interrupt-controller/actions,owl-sirq.yaml
--
2.43.0
