Commit bb410c03 authored by Judith Mendez's avatar Judith Mendez Committed by Marc Kleine-Budde
Browse files

dt-bindings: net: can: Remove interrupt properties for MCAN 



On AM62x SoC, MCANs on MCU domain do not have hardware interrupt
routed to A53 Linux, instead they will use software interrupt by
timer polling.

To enable timer polling method, interrupts should be
optional so remove interrupts property from required section and
add an example for MCAN node with timer polling enabled.

Reviewed-by: default avatarTony Lindgren <tony@atomide.com>
Reviewed-by: default avatarConor Dooley <conor.dooley@microchip.com>
Acked-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarJudith Mendez <jm@ti.com>
Link: https://lore.kernel.org/all/20230707204714.62964-2-jm@ti.com


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 68af9000

Documentation/devicetree/bindings/net/can/bosch,m_can.yaml

+18 −2
Original line number Diff line number Diff line
@@ -122,8 +122,6 @@ required: 
  - compatible

  - reg

  - reg-names

  - interrupts

  - interrupt-names

  - clocks

  - clock-names

  - bosch,mram-cfg
@@ -132,6 +130,7 @@ additionalProperties: false 


examples:

  - |

    // Example with interrupts

    #include <dt-bindings/clock/imx6sx-clock.h>

    can@20e8000 {

      compatible = "bosch,m_can";
@@ -149,4 +148,21 @@ examples: 
      };

    };



  - |

    // Example with timer polling

    #include <dt-bindings/clock/imx6sx-clock.h>

    can@20e8000 {

      compatible = "bosch,m_can";

      reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;

      reg-names = "m_can", "message_ram";

      clocks = <&clks IMX6SX_CLK_CANFD>,

               <&clks IMX6SX_CLK_CANFD>;

      clock-names = "hclk", "cclk";

      bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;



      can-transceiver {

        max-bitrate = <5000000>;

      };

    };



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