On 03.03.2021 10:00:47, ukrfoil.com, Cтудиопак Украина, Восточный регион wrote:

this with the IRQ_TYPE_EDGE_FALLING value

quoted

That looks good, the IRQ is not shared. Can you test again with
IRQ_TYPE_EDGE_FALLING in the DT instead of IRQ_TYPE_LEVEL_LOW?

Doh! Need more coffee.

Of course I mean try with IRQ_TYPE_LEVEL_LOW and check if the unmodified
mcp2515 driver with disable_irq() does work then.

quoted

| can0: can@0 {
|       reg = <0>;
|       compatible = "microchip,mcp2515";
|       pinctrl-names = "default";
|       pinctrl-0 = <&can0_pin_irq>;
|       interrupt-parent = <&pio>;
|       interrupts = <6 8 IRQ_TYPE_EDGE_FALLING>;

You better use IRQ_TYPE_LEVEL_LOW instead of IRQ_TYPE_EDGE_FALLING, but
that's unrelated to this problem.

|       clocks = <&can0_osc_fixed>;
|       spi-max-frequency = <10000000>;
|       gpio-controller;
|       gpio-cells = <2>;
|       status = "okay";
| };

Marc

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