Hello there,
I just got back to my BeagleBone Black and i have no idea why but I just
cannot change a pin configuration using overlay nor through export. This is
what I am trying to do:
I want to set P8_29 and P8_31 Pins to inputs with a pullup (0x37). here is
my overlay:
/dts-v1/;
/plugin/;
/{
compatible = "ti,beaglebone", "ti,beaglebone-black";
part-number = "BB-AVRDUDE";
version = "00A0";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
ebb_example: BB-AVRDUDE {
pinctrl-single,pins = <
0x0E4 0x37 // P8_29, AVR #RST pin, Input Mode7 pullup
0x0D8 0x37 // P8_31, AVR #HWB pin, Input Mode7 pullup
/* INPUT GPIO(mode7) 0x27 pulldown, 0x37 pullup,
0x?f no pullup/down */
>;
};
};
};
fragment@1 {
target = <&ocp>;
__overlay__ {
gpio_helper {
compatible = "gpio-of-helper";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&ebb_example>;
};
};
};
};
Then I load the DTS and see in the list (last). HDMI is disabled:
0: 54:PF---
1: 55:PF---
2: 56:PF---
3: 57:PF---
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN
7: ff:P-O-L Override Board Name,00A0,Override Manuf,NEOSEC-TINYLCD22
8: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-BONE-KEYS
9: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-BONE-SPI1-2CS
10: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm
11: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-COOLER
12: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART5
13: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-BUZZER
14: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-W1
*15: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-AVRDUDE*
Dmesg says it was OK:
root@beaglebone:~# dmesg | grep BB-AVRDUDE
[ 151.732517] bone-capemgr bone_capemgr.9: part_number 'BB-AVRDUDE',
version 'N/A'
[ 151.732633] bone-capemgr bone_capemgr.9: slot #15: 'Override Board
Name,00A0,Override Manuf,BB-AVRDUDE'
[ 151.732729] bone-capemgr bone_capemgr.9: slot #15: Requesting part
number/version based 'BB-AVRDUDE-00A0.dtbo
[ 151.732744] bone-capemgr bone_capemgr.9: slot #15: Requesting firmware
'BB-AVRDUDE-00A0.dtbo' for board-name 'Override Board Name', version '00A0'
[ 151.736445] bone-capemgr bone_capemgr.9: slot #15: dtbo
'BB-AVRDUDE-00A0.dtbo' loaded; converting to live tree
Then I check the pins and they remain as they were in default:
root@beaglebone:~# cat $PINS | grep "pin 57"
pin 57 (44e108e4) 00000027 pinctrl-single
root@beaglebone:~# cat $PINS | grep "pin 54"
pin 54 (44e108d8) 0000002f pinctrl-single
Did I forget something? I really cant think of anything. I would really
apreciate all help here!
