On Mon, Aug 10, 2015 at 10:48 AM, Ran Shalit <ransha...@gmail.com> wrote:
> Hello,
>
> MPC8349 has general IRQ numbered 0-7,
> It is required to bind these IRQs with some routine , i.e. they are
> not used with any specific driver.
>
> - Should they be configured as gpios in device tree so that we can use
> the gpio as irq in linux ? Is there any example ?
> - After configuration, can the gpios be used in linux using the
> standard /sys/class/gpio ?
>
> Regards,
> Ran
I am trying to use only IRQ4, so I have tried to configure it as
following in device tree:
device tree:
intc@0{
compatible = "intc";
#address-cells = <1>;
#size-cells = <0>;
reg = <0 0x1000>;
interrupts = <4 0x8>;
};
But I don't see IRQ4 listed in the interrupt list:
# cat /proc/interrupts
CPU0
16: 93 IPIC 9 Level serial
18: 0 IPIC 14 Level i2c-mpc
19: 0 IPIC 15 Level i2c-mpc
21: 0 IPIC 18 Level phy_interrupt
32: 0 IPIC 32 Level eth0_g0_tx
33: 14 IPIC 33 Level eth0_g0_rx
34: 0 IPIC 34 Level eth0_g0_er
35: 0 IPIC 35 Level eth1_g0_tx
36: 0 IPIC 36 Level eth1_g0_rx
37: 0 IPIC 37 Level eth1_g0_er
LOC: 60756 Local timer interrupts for timer event device
LOC: 1 Local timer interrupts for others
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
MCE: 0 Machine check exceptions
Regards,
Ran
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