Commit 30fddbd5 authored by Caleb James DeLisle's avatar Caleb James DeLisle Committed by Daniel Lezcano
Browse files

dt-bindings: timer: Add EcoNet EN751221 "HPT" CPU Timer 



Add device tree bindings for the so-called high-precision timer (HPT)
in the EcoNet EN751221 SoC.

Signed-off-by: default avatarCaleb James DeLisle <cjd@cjdns.fr>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250507134500.390547-2-cjd@cjdns.fr


Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 7aeeac55

Documentation/devicetree/bindings/timer/econet,en751221-timer.yaml

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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/timer/econet,en751221-timer.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: EcoNet EN751221 High Precision Timer (HPT)



maintainers:

  - Caleb James DeLisle <cjd@cjdns.fr>



description:

  The EcoNet High Precision Timer (HPT) is a timer peripheral found in various

  EcoNet SoCs, including the EN751221 and EN751627 families. It provides per-VPE

  count/compare registers and a per-CPU control register, with a single interrupt

  line using a percpu-devid interrupt mechanism.



properties:

  compatible:

    oneOf:

      - const: econet,en751221-timer

      - items:

          - const: econet,en751627-timer

          - const: econet,en751221-timer



  reg:

    minItems: 1

    maxItems: 2



  interrupts:

    maxItems: 1

    description: A percpu-devid timer interrupt shared across CPUs.



  clocks:

    maxItems: 1



required:

  - compatible

  - reg

  - interrupts

  - clocks



allOf:

  - if:

      properties:

        compatible:

          contains:

            const: econet,en751627-timer

    then:

      properties:

        reg:

          items:

            - description: VPE timers 0 and 1

            - description: VPE timers 2 and 3

    else:

      properties:

        reg:

          items:

            - description: VPE timers 0 and 1



additionalProperties: false



examples:

  - |

    timer@1fbf0400 {

        compatible = "econet,en751627-timer", "econet,en751221-timer";

        reg = <0x1fbf0400 0x100>, <0x1fbe0000 0x100>;

        interrupt-parent = <&intc>;

        interrupts = <30>;

        clocks = <&hpt_clock>;

    };

  - |

    timer@1fbf0400 {

        compatible = "econet,en751221-timer";

        reg = <0x1fbe0400 0x100>;

        interrupt-parent = <&intc>;

        interrupts = <30>;

        clocks = <&hpt_clock>;

    };

...