diff options
| author | Hao-Wen Ting <haowen.ting@realtek.com> | 2025-11-26 14:01:09 +0800 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2025-11-26 11:25:15 +0100 |
| commit | 40caba2bd027ab57c196b690e4e7f3c1746acb96 (patch) | |
| tree | 4c3b2a9bf01923f12cec06a34ffee3ac00deee12 | |
| parent | ed92a968a967042a7c7eb4c938e640b4deb79fe2 (diff) | |
dt-bindings: timer: Add Realtek SYSTIMER
The Realtek SYSTIMER (System Timer) is a 64-bit global hardware counter
operating at a fixed 1MHz frequency. Thanks to its compare match
interrupt capability, the timer natively supports oneshot mode for tick
broadcast functionality.
Signed-off-by: Hao-Wen Ting <haowen.ting@realtek.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://patch.msgid.link/20251126060110.198330-2-haowen.ting@realtek.com
| -rw-r--r-- | Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml b/Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml new file mode 100644 index 000000000000..e08d3d2d306b --- /dev/null +++ b/Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/realtek,rtd1625-systimer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Realtek System Timer + +maintainers: + - Hao-Wen Ting <haowen.ting@realtek.com> + +description: + The Realtek SYSTIMER (System Timer) is a 64-bit global hardware counter operating + at a fixed 1MHz frequency. Thanks to its compare match interrupt capability, + the timer natively supports oneshot mode for tick broadcast functionality. + +properties: + compatible: + oneOf: + - const: realtek,rtd1625-systimer + - items: + - const: realtek,rtd1635-systimer + - const: realtek,rtd1625-systimer + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + timer@89420 { + compatible = "realtek,rtd1635-systimer", + "realtek,rtd1625-systimer"; + reg = <0x89420 0x18>; + interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>; + }; |