Customize a Linux distribution with Yocto Project, at the very end I need
to enable the functionality of the Pushbutton S2 to shutdown the plate.
More infos:
# uname -ra
Linux XXXXX 3.14.19-yocto-standard #1 PREEMPT Tue Aug 10 17:47:07 BRT 2015
armv7l GNU/Linux
# dmesg | grep tps
[ 1.279073] tps65217 0-0024: TPS65217 ID 0xe version 1.2
# zcat /proc/config.gz | grep -E 'TPS65217|MFD_CORE'
CONFIG_MFD_CORE=y
CONFIG_MFD_TPS65217=y
CONFIG_REGULATOR_TPS65217=y
# CONFIG_BACKLIGHT_TPS65217 is not set
# ls
/sys/class/power_supply/
# ls /sys/class/rtc/rtc0/
date device max_user_freq power subsystem uevent
dev hctosys name since_epoch time
# ls /sys/class/i2c-dev/i2c-0/
dev device name power subsystem uevent
# ls /sys/class/i2c-adapter/i2c-0/
0-0024 device name power uevent
delete_device i2c-dev new_device subsystem
# i2cdetect -y -r 0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- UU -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- 34 -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Beaglebone black power with Button S2
# i2cget -y -f 0 0x24 0XA
0x08
0x08 (01000)
Beaglebone black power with ButtonS2 Pressed
# i2cget -y -f 0 0x24 0XA
0x09
0x09 (01001)
# In datasheet Pag.52 - 0xA -> STATUS
bit1 :
Push
Button status bit
0 – Push Button is inactive (PB_IN is pulled high)
1 – PushButton is active (PB_IN is pulled low)
I should change the device tree reference in Power PMIC that the Yocto
generate? Or create patch for driver tps65217? The same dispatch IRQ?
Someone has already implemented this with Power S2 to halt board?
--
For more options, visit http://beagleboard.org/discuss
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