Clearfog pro user button

OCTEON CN9130
1

Hy.

I try to use the button by GPIO.

I don’t manage to find which gpio i must use

	keys {
                compatible = "gpio-keys";
                pinctrl-0 = <&cp0_button_pin>;
                pinctrl-names = "default";

		button0{
			/* SW3 button */
			label = "SW3";
			gpios = <&cp0_gpio2 0 GPIO_ACTIVE_LOW>;
			linux,can-disable;
			linux,code = <BTN_0>;
		};
	};
};

and

		cp0_button_pin: cp0-button-pin {
                	marvell,pins = "mpp32";
                	marvell,function = "gpio";
        	};

# ls /sys/class/gpio/
export       gpio42       gpiochip32   gpiochip64
gpio32       gpiochip0    gpiochip512  unexport
# ^C
#

# gpiodetect
gpiochip0 [0-0020] (16 lines)
gpiochip1 [f06f4000.system-controller:gpio] (20 lines)
gpiochip2 [f2440000.system-controller:gpio] (32 lines)
gpiochip3 [f2440000.system-controller:gpio] (31 lines)
# ^C
# gpioinfo gpiochip0
gpiochip0 - 16 lines:
        line   0:      unnamed "pcie1.0-clkreq" input active-low [used]
        line   1:      unnamed       unused  output  active-high
        line   2:      unnamed       unused  output  active-high
        line   3:      unnamed "pcie1.0-w-disable" output active-low [used]
        line   4:      unnamed "pcie2.0-clkreq" input active-low [used]
        line   5:      unnamed "usb3-current-limit" input active-low [used]
        line   6:      unnamed "usb3-power"  output  active-high [used]
        line   7:      unnamed "pcie2.0-w-disable" output active-low [used]
        line   8:      unnamed       unused   input  active-high
        line   9:      unnamed       unused   input  active-high
        line  10:      unnamed       unused   input  active-high
        line  11:      unnamed "m.2 devslp"  output  active-high [used]
        line  12:      unnamed        "los"   input  active-high [used]
        line  13:      unnamed   "tx-fault"   input  active-high [used]
        line  14:      unnamed "tx-disable"   input  active-high [used]
        line  15:      unnamed   "mod-def0"   input   active-low [used]
# gpioinfo gpiochip1
gpiochip1 - 20 lines:
        line   0:      unnamed       unused   input  active-high
        line   1:      unnamed       unused   input  active-high
        line   2:      unnamed       unused   input  active-high
        line   3:      unnamed       unused   input  active-high
        line   4:      unnamed       unused   input  active-high
        line   5:      unnamed       unused   input  active-high
        line   6:      unnamed       unused   input  active-high
        line   7:      unnamed       unused   input  active-high
        line   8:      unnamed       unused   input  active-high
        line   9:      unnamed       unused   input  active-high
        line  10:      unnamed       unused   input  active-high
        line  11:      unnamed       unused   input  active-high
        line  12:      unnamed       unused   input  active-high
        line  13:      unnamed       unused   input  active-high
        line  14:      unnamed       unused   input  active-high
        line  15:      unnamed       unused   input  active-high
        line  16:      unnamed       unused   input  active-high
        line  17:      unnamed       unused   input  active-high
        line  18:      unnamed       unused   input  active-high
        line  19:      unnamed       unused   input  active-high
# gpioinfo gpiochip2
gpiochip2 - 32 lines:
        line   0:      unnamed      "sysfs"   input  active-high [used]
        line   1:      unnamed       unused   input  active-high
        line   2:      unnamed       unused   input  active-high
        line   3:      unnamed       unused   input  active-high
        line   4:      unnamed       unused   input  active-high
        line   5:      unnamed       unused   input  active-high
        line   6:      unnamed       unused   input  active-high
        line   7:      unnamed       unused   input  active-high
        line   8:      unnamed       unused   input  active-high
        line   9:      unnamed       unused   input  active-high
        line  10:      unnamed      "sysfs"   input  active-high [used]
        line  11:      unnamed       unused   input  active-high
        line  12:      unnamed       unused   input  active-high
        line  13:      unnamed       unused   input  active-high
        line  14:      unnamed       unused   input  active-high
        line  15:      unnamed       unused   input  active-high
        line  16:      unnamed       unused   input  active-high
        line  17:      unnamed       unused   input  active-high
        line  18:      unnamed       unused   input  active-high
        line  19:      unnamed       unused   input  active-high
        line  20:      unnamed       unused   input  active-high
        line  21:      unnamed       unused   input  active-high
        line  22:      unnamed       unused   input  active-high
        line  23:      unnamed       unused   input  active-high
        line  24:      unnamed       unused   input  active-high
        line  25:      unnamed       unused   input  active-high
        line  26:      unnamed       unused  output  active-high
        line  27:      unnamed  "phy_reset"  output  active-high [used]
        line  28:      unnamed       unused   input  active-high
        line  29:      unnamed       unused   input  active-high
        line  30:      unnamed       unused   input  active-high
        line  31:      unnamed       unused   input  active-high
# gpioinfo gpiochip3
gpiochip3 - 31 lines:
        line   0:      unnamed       unused   input  active-high
        line   1:      unnamed       unused   input  active-high
        line   2:      unnamed       unused   input  active-high
        line   3:      unnamed       unused   input  active-high
        line   4:      unnamed       unused   input  active-high
        line   5:      unnamed       unused   input  active-high
        line   6:      unnamed       unused   input  active-high
        line   7:      unnamed       unused  output  active-high
        line   8:      unnamed       unused   input  active-high
        line   9:      unnamed       unused   input  active-high
        line  10:      unnamed       unused   input  active-high
        line  11:      unnamed         "cd"   input   active-low [used]
        line  12:      unnamed       unused   input  active-high
        line  13:      unnamed       unused   input  active-high
        line  14:      unnamed       unused   input  active-high
        line  15:      unnamed       unused   input  active-high
        line  16:      unnamed       unused   input  active-high
        line  17:      unnamed       unused   input  active-high
        line  18:      unnamed       unused   input  active-high
        line  19:      unnamed       unused   input  active-high
        line  20:      unnamed       unused   input  active-high
        line  21:      unnamed       unused   input  active-high
        line  22:      unnamed       unused  output  active-high
        line  23:      unnamed       unused   input  active-high
        line  24:      unnamed       unused   input  active-high
        line  25:      unnamed       unused   input  active-high
        line  26:      unnamed       unused  output  active-high
        line  27:      unnamed       unused   input  active-high
        line  28:      unnamed       unused  output  active-high
        line  29:      unnamed       unused  output  active-high
        line  30:      unnamed       unused  output  active-high

Thank by advance

2

I assume you mean the push button in between the switch ports and the SFP+ cage. That switch is routed to an assembly option for the PIC microcontroller that is not assembled by default. You can refer to the images here, https://solidrun.atlassian.net/wiki/spaces/developer/pages/268140545/ClearFog+CN9130+Pro+Quick+Start+Guide#Documentation

3

Hy.
Thank you to answer me :slight_smile:
It’s this button.
So if i understand, without thé option for thé pic, i cannot use this button.

4

With the board as shipped that is correct. The microcontroller is an assembly option and not the default. If you don’t mind soldering, then you could solder the pad for that button over to a GPIO on the MikroBus header. I can send you a picture if you would like

5

I want to, thank you.
An off-topic question and I hope not too stupid ^^.
I chosen the pro at the base just for the two mpcie.
But is it possible to add an mpcie to a clearfog base?

6

The base only has the single mPCIe and then the mSATA connector.

7

Actually I was just poking around the board a bit more regarding that pin and it is connected to the main SOC is the PIC is not populated. It is on pin mpp34. That is not expressed in the device-tree currently. I will work out patches for u-boot and linux.