How to use PWM mode? about meta-intel-edison

[htot]

I see, it appears you are right. The pin mode needs to be set and there is no infrastructure for that yet. For now there is hack floating around that you might try. It sets the pin modes when the pwm driver is probed, maybe it works for you?

[htot]

What do you mean zeus does not use Arduino board?

We have this https://github.com/edison-fw/meta-acpi/blob/a48a1c514978038ba17c115c94845341ffb91d54/recipes-bsp/acpi-tables/samples/edison/arduino.asli#L1131

Scope (\_SB.PCI0.PWM0)
{
    Name (RBUF, ResourceTemplate ()
    {
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 144 }
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 145 }
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 132 }
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 133 }
    })
    Method (_CRS, 0, NotSerialized)
    {
        Return (RBUF)
    }
}

[shawnhsoia97]

What do you mean zeus does not use Arduino board?

My mean is only use GPIO of Edison , and I did not develop on Arduino board.

We have this https://github.com/edison-fw/meta-acpi/blob/a48a1c514978038ba17c115c94845341ffb91d54/recipes-bsp/acpi-tables/samples/edison/arduino.asli#L1131

Scope (\_SB.PCI0.PWM0)
{
    Name (RBUF, ResourceTemplate ()
    {
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 144 }
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 145 }
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 132 }
        PinFunction(Exclusive, PullUp, 0x0001,
            "\\_SB.FLIS", 0, ResourceConsumer, , ) { 133 }
    })
    Method (_CRS, 0, NotSerialized)
    {
        Return (RBUF)
    }
}

Yes , I did follow this example , but I use control pwm based on pwm class (e.g. /sys/class/pwm/pwmchip0/pwm0) that is no PWM signal created on pwm0(GP12).

[shawnhsoia97]

Thank your help ! I appreciate that.
This works for me. The pwm driver has been correctly probed.

[andy-shev]

Also possible to do this via @xlla patches as pointed out here #100.