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>
---
 .../timer/realtek,rtd1625-systimer.yaml       | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml

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..0b8fad37edb4
--- /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>;
+    };
-- 
2.34.1

On Thu, Nov 20, 2025 at 02:30:09PM +0800, Hao-Wen Ting wrote:
> 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>
> ---
>  .../timer/realtek,rtd1625-systimer.yaml       | 47 +++++++++++++++++++
>  1 file changed, 47 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/realtek,rtd1625-systimer.yaml
> 
> 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..0b8fad37edb4
> --- /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: |

Drop |. Do not need '|' unless you need to preserve formatting.

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

Best regards,
Krzysztof