[PATCH v2 4/8] dt-bindings: timer: Add schema for realtek,otto-timer

Chris Packham
2024-06-24T01:23:11Z

Add the devicetree schema for the realtek,otto-timer present on a number
of Realtek SoCs.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
---

Notes:
Changes in v2:
- Use specific compatible
- Remove unnecessary label
- Remove unused irq flags (interrupt controller is one-cell)
- Set minItems for reg and interrupts based on compatible

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

diff --git a/Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml b/Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml
new file mode 100644
index 000000000000..13ea7aa946fe
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/realtek,otto-timer.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/realtek,otto-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek Otto SoCs Timer/Counter
+
+description:
+ Realtek SoCs support a number of timers/counters. These are used
+ as a per CPU clock event generator and an overall CPU clocksource.
+
+maintainers:
+ - Chris Packham <chris.packham@alliedtelesis.co.nz>
+
+properties:
+ $nodename:
+ pattern: "^timer@[0-9a-f]+$"
+
+ compatible:
+ items:
+ - enum:
+ - realtek,rtl9302-timer
+ - const: realtek,otto-timer
+
+ reg:
+ maxItems: 5
+
+ clocks:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 5
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: realtek,rtl9302-timer
+ then:
+ properties:
+ reg:
+ minItems: 2
+ interrupts:
+ minItems: 2
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ timer@3200 {
+ compatible = "realtek,rtl9302-timer", "realtek,otto-timer";
+ reg = <0x3200 0x10>, <0x3210 0x10>, <0x3220 0x10>,
+ <0x3230 0x10>, <0x3240 0x10>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <7>, <8>, <9>, <10>, <11>;
+ clocks = <&lx_clk>;
+ };
--
2.45.2