Commit c819dbd0 authored by Mubin Sayyed's avatar Mubin Sayyed Committed by Daniel Lezcano
Browse files

dt-bindings: timer: Add support for cadence TTC PWM 



Cadence TTC can act as PWM device, it will be supported through
separate PWM framework based driver. Decision to configure
specific TTC device as PWM or clocksource/clockevent would
be done based on presence of "#pwm-cells" property.

Also, interrupt property is not required for TTC PWM driver.
Update bindings to support TTC PWM configuration.

Signed-off-by: default avatarMubin Sayyed <mubin.sayyed@amd.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20240226093333.2581092-1-mubin.sayyed@amd.com
parent 755350bc

Documentation/devicetree/bindings/timer/cdns,ttc.yaml

+21 −1
Original line number Diff line number Diff line
@@ -32,12 +32,23 @@ properties: 
    description: |

      Bit width of the timer, necessary if not 16.



  "#pwm-cells":

    const: 3



required:

  - compatible

  - reg

  - interrupts

  - clocks



allOf:

  - if:

      not:

        required:

          - "#pwm-cells"

    then:

      required:

        - interrupts



additionalProperties: false



examples:
@@ -50,3 +61,12 @@ examples: 
        clocks = <&cpu_clk 3>;

        timer-width = <32>;

    };



  - |

    pwm: pwm@f8002000 {

        compatible = "cdns,ttc";

        reg = <0xf8002000 0x1000>;

        clocks = <&cpu_clk 3>;

        timer-width = <32>;

        #pwm-cells = <3>;

    };