imx6 linux 如何设置普通的gpio 唤醒系统直接在设备树下可以配置不？

只看该作者 · 2016-5-20 16:47

只看该作者 · 2016-5-22 14:04

目前可以正常唤醒设备了如下配置
gpio-keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpio_keys>; /* ----->>>>yao */
status = "okay";

button-k1 {
label = "K1";
gpios = <&gpio3 20 GPIO_ACTIVE_HIGH>;
linux,code = <1>;
gpio-key,wakeup;
};

};

pinctrl_led: gpio_ledsgrp {
fsl,pins = <
MX6UL_PAD_LCD_DATA19__GPIO3_IO24 0x17059
>;
};

然后 echo enabled > /sys/devices/soc0/gpio-keys.10/power/wakeup 使能wakeup
之后 echo mem > /sys/power/state

然后将对应的io拉低就ok了前提该gpio是高电平如果不是需要上拉

只看该作者 · 2016-5-22 14:05

root@imx6ulevk:/sys/devices/soc0# cd gpio-keys.10/
root@imx6ulevk:/sys/devices/soc0/gpio-keys.10# ls
disabled_keys    input             power             uevent
disabled_switches  keys             subsystem
driver          modalias          switches
root@imx6ulevk:/sys/devices/soc0/gpio-keys.10# cd power/
root@imx6ulevk:/sys/devices/soc0/gpio-keys.10/power# ls
autosuspend_delay_ms wakeup                wakeup_expire_count
control                wakeup_abort_count    wakeup_last_time_ms
runtime_active_time    wakeup_active          wakeup_max_time_ms
runtime_status       wakeup_active_count    wakeup_total_time_ms
runtime_suspended_time  wakeup_count
root@imx6ulevk:/sys/devices/soc0/gpio-keys.10/power# ls -l
-rw-r--r-- 1 root    root       4096 Jan 19 09:05 autosuspend_delay_ms
-rw-r--r-- 1 root    root       4096 Jan 19 09:05 control
-r--r--r-- 1 root    root       4096 Jan 19 09:05 runtime_active_time
-r--r--r-- 1 root    root       4096 Jan 19 09:05 runtime_status
-r--r--r-- 1 root    root       4096 Jan 19 09:05 runtime_suspended_time
-rw-r--r-- 1 root    root       4096 Jan 19 09:05 wakeup
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_abort_count
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_active
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_active_count
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_count
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_expire_count
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_last_time_ms
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_max_time_ms
-r--r--r-- 1 root    root       4096 Jan 19 09:05 wakeup_total_time_ms
root@imx6ulevk:/sys/devices/soc0/gpio-keys.10/power# cat wakeup
enabled
oot@imx6ulevk:/sys/devices/soc0/gpio-keys.10/power# echo mem > /sys/power/state
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
>>>>>>>>>>>>>>>>>>>>__gpio_set_value
>>>>>>>>>>>>>>>>>>>>gpiod_set_raw_value
--222222222222222->led_dat->gpio = 88
gpio-keys gpio-keys.10: --->gpio_keys_suspend ---in---
gpio-keys gpio-keys.10: >>>>>>>>>>>>>>gpio_keys_suspend  keycode: 0x54 desc 0K1
---->imx_snvs_pwrkey_suspend.
PM: suspend of devices complete after 36.607 msecs
PM: suspend devices took 0.040 seconds
PM: late suspend of devices complete after 0.877 msecs
PM: noirq suspend of devices complete after 1.018 msecs
Disabling non-boot CPUs ...
Turn off M/F mix!
PM: noirq resume of devices complete after 0.568 msecs
PM: early resume of devices complete after 0.703 msecs
---->imx_snvs_pwrkey_resume.
imx-sdma 20ec000.sdma: loaded firmware 3.1
gpio-keys gpio-keys.10: --->gpio_keys_resume ---in---
gpio-keys gpio-keys.10: >>>>>>>>>>>>>>gpio_keys_resume  keycode: 0x54 desc K1
>>>>>>>>>>>>>>>>>>>>__gpio_set_value
>>>>>>>>>>>>>>>>>>>>gpiod_set_raw_value
--222222222222222->led_dat->gpio = 88
PM: resume of devices complete after 89.308 msecs
PM: resume devices took 0.090 seconds
Restarting tasks ... done.
root@imx6ulevk:/sys/devices/soc0/gpio-keys.10/power#

只看该作者 · 2017-2-16 13:10

没搞过这个，学习一下......

imx6 linux 如何设置普通的gpio 唤醒系统 直接在设备树下可以配置不？

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imx6 linux 如何设置普通的gpio 唤醒系统直接在设备树下可以配置不？