Hi all
I have a interrupt serial problem and I need your help.
platform : imx8mm
Linux : 5.10
Please see the attach file .
Page 2 :
DTS : IRQ_TYPE_LEVEL
Function : request_threaded_irq (spi->irq, NULL, mcp251xfd_irq,
IRQF_ONESHOT | IRQF_TRIGGER_LOW , dev_name(&spi->dev),
priv)
Summary : (1) ip link set up can0 type can bitrate 500000 (It is called request_threaded_irq) . Why the interrupt is generated and make a call trace ?
Page 4 :
DTS : IRQ_TYPE_EDGE_FALLING
Function : request_threaded_irq (spi->irq, NULL, mcp251xfd_irq,
IRQF_ONESHOT | IRQF_TRIGGER_FALLING , dev_name(&spi->dev),
priv)
Summary : (1) ip link set up can0 type can bitrate 500000 (It is called request_threaded_irq) . Why the interrupt do not have any action ?
MY question:
Why the only IRQ_TYPE_LEVEL can gererate INT (call trace)?
Why the IRQ_TYPE_EDGE_FALLING can not gererate INT ?
