How to enable power on/off of imx6 sabrelite board over gpio 7 13?

[ivanljubicic]

Hi,

How to enable power on/off of imx6 sabrelite board over gpio 7 13 button? I have already enabled snvs_pwrkey driver and added configuration in imx6qdl.dtsi:

            snvs-pwrkey@0x020cc000 {

                compatible = "fsl,imx6sx-snvs-pwrkey";

                reg = <0x020cc000 0x4000>;

                interrupts = <0 4 IRQ_TYPE_LEVEL_HIGH>;

                fsl,keycode = <116>; /* KEY_POWER */

                fsl,wakeup;

            };

I have also mapped gpio button to KEY_POWER in imx6qdl-sabrelite.dtsi:

        power {

            label = "Power Button";

            gpios = GP_GPIOKEY_VOL_UP;

            linux,code = <KEY_POWER>;    /* or KEY_SEARCH */

            gpio-key,wakeup;

        };

#define GP_GPIOKEY_VOL_UP    <&gpio7 13 GPIO_ACTIVE_LOW>

            MX6QDL_PAD_GPIO_18__GPIO7_IO13        0x1b0b0

I have compiled and probe image but failed. I have also tried more items from forum but also failed. So I need help.

Thanks, regards, Ivan.

[igorpadykov]

Hi Ivan

some snvs-pwrkey examples can be found on

http://www.variscite.com/support-forum/viewtopic.php?t=150

https://community.freescale.com/thread/358898

https://groups.google.com/forum/#!topic/rtc-linux/1-A_J-uyW1Q

Best regards

igor

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[ivanljubicic]

Hi Igor,

I have tried examples you posted but had no luck. Second link suites me

most. I have changed code in snsv-pwrkey.c like described and added

block to imx6qdl.dtsi but have no success. I have in imx6qdl.dtsi block:

snvs@020cc000 {

compatible = "fsl,sec-v4.0-mon", "simple-bus";

#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x020cc000 0x4000>;

snvs-rtc-lp@34 {
compatible = "fsl,sec-v4.0-mon-rtc-lp";
reg = <0x34 0x58>;
interrupts = <0 19 IRQ_TYPE_LEVEL_HIGH>,
<0 20 IRQ_TYPE_LEVEL_HIGH>;
};
};

and I have put:

snvs-pwrkey@0x020cc000 {
compatible = "fsl,imx6sx-snvs-pwrkey";
reg = <0x020cc000 0x4000>;
interrupts = <0 4 IRQ_TYPE_LEVEL_HIGH>;
fsl,keycode = <116>; /* KEY_POWER */

fsl,wakeup;

};

inside, but boot process is failing because, I think, same 0x020cc000

memory range is used for snvs and snvs-pwrkey.

I have also commented out upper block and leave lower block alone, but

nothing happens when I press button on gpio.

I have found on internet that gpio-keys driver is resonsible for mapping

gpio on some key, and I have driver enabled and I have mapped gpio to

key as described, so this part should be OK. Also driver snvs-pwrkey is

enabled because I have printout in /var/log/messages:

input: 20cc000.snvs-pwrkey as

/devices/soc0/soc.0/2000000.aips-bus/20cc000.snvs-pwrkey/input/input0

snvs_pwrkey 20cc000.snvs-pwrkey: i.MX snvs powerkey probed

Also for gpio key I have printout in /var/log/messages:

input: gpio-keys.14 as

/devices/soc0/gpio-keys.14/input/input1

But when pressing button on gpio nothing happens.

Third link that is posted does not suite me, because I have different

code, so I can not apply patches from it. Also I do not have all files

mentioned there.

I have imx6 sabrelite board with quad processor with yocto (jethro)

linux with kernel 3.14.28.0.

Thanks, regards, Ivan.