How to enable power button in Beaglebone Black Rev C?
Here is my device tree from i2c and tps:
i2c0_pins: pinmux_i2c0_pins {
pinctrl-single,pins = <
AM33XX_IOPAD(0x988, PIN_INPUT_PULLUP | MUX_MODE0) /*
i2c0_sda.i2c0_sda */
AM33XX_IOPAD(0x98c, PIN_INPUT_PULLUP | MUX_MODE0) /*
i2c0_scl.i2c0_scl */
>;
};
&i2c0 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
status = "okay";
clock-frequency = <400000>;
tps: tps@24 {
reg = <0x24>;
};
baseboard_eeprom: baseboard_eeprom@50 {
compatible = "atmel,24c256";
reg = <0x50>;
#address-cells = <1>;
#size-cells = <1>;
baseboard_data: baseboard_data@0 {
reg = <0 0x100>;
};
};
};
&tps {
/*
* Configure pmic to enter OFF-state instead of SLEEP-state ("RTC-only
* mode") at poweroff. Most BeagleBone versions do not support RTC-only
* mode and risk hardware damage if this mode is entered.
*
* For details, see linux-omap mailing list May 2015 thread
* [PATCH] ARM: dts: am335x-bone* enable pmic-shutdown-controller
* In particular, messages:
* http://www.spinics.net/lists/linux-omap/msg118585.html
* http://www.spinics.net/lists/linux-omap/msg118615.html
*
* You can override this later with
* &tps { /delete-property/ ti,pmic-shutdown-controller; }
* if you want to use RTC-only mode and made sure you are not affected
* by the hardware problems. (Tip: double-check by performing a current
* measurement after shutdown: it should be less than 1 mA.)
*/
interrupts = <7>; /* NMI */
interrupt-parent = <&intc>;
ti,pmic-shutdown-controller;
charger {
status = "okay";
};
pwrbutton {
status = "okay";
};
regulators {
dcdc1_reg: regulator@0 {
regulator-name = "vdds_dpr";
regulator-always-on;
};
dcdc2_reg: regulator@1 {
/* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
regulator-name = "vdd_mpu";
regulator-min-microvolt = <925000>;
regulator-max-microvolt = <1351500>;
regulator-boot-on;
regulator-always-on;
};
dcdc3_reg: regulator@2 {
/* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
regulator-name = "vdd_core";
regulator-min-microvolt = <925000>;
regulator-max-microvolt = <1150000>;
regulator-boot-on;
regulator-always-on;
};
ldo1_reg: regulator@3 {
regulator-name = "vio,vrtc,vdds";
regulator-always-on;
};
ldo2_reg: regulator@4 {
regulator-name = "vdd_3v3aux";
regulator-always-on;
};
ldo3_reg: regulator@5 {
regulator-name = "vdd_1v8";
regulator-always-on;
};
ldo4_reg: regulator@6 {
regulator-name = "vdd_3v3a";
regulator-always-on;
};
};
};
Im using kernel 4.19.79
On default Debian image:
- when i press power button then the system is power off and power LED is
off
- when i run `poweroff` then system is going down and power led is OFF
On my buildroot image:
- when i press power button nothing happend
- when i run `poweroff` then system is going down and power led is still ON
How to enable full power support in buildroot image?
Regards,
Szymon
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