Sorry I forgot:
you should check with the following command:
root@beaglebone:~# cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pins |
grep "8a4"
because you have 0x0a4 that is the offset. Ok, now you should add 44e10800
=> 44e108a4
Looking for "8a4" is enough and you ll find the right pin.
Pin 71 is not the right one.
2016-01-18 21:04 GMT+01:00 Davide Picchi <pave...@gmail.com>:
> 1) Reboot the board
> 2) check whether the cape has been rightly loaded
> 3) if yes, check the pinmux again.
>
> Your device tree seems ok to me
>
> 2016-01-09 9:29 GMT+01:00 <taras.pit...@gmail.com>:
>
>> Hi all,
>>
>> I started using Beaglebone Black with Debian 7.9 for my project and I'm
>> trying to load my own device-tree overlay in order to get more GPIO pins
>> available. I need to use P8.46 pin as GPIO (Mode7) pin. I've disabled HDMI
>> cape and then built custom dts to configure P8.46 pin as GPIO pin (mode7,
>> output, pull-down):
>>
>> /dts-v1/;
>> /plugin/;
>>
>>
>> /{
>> compatible = "ti,beaglebone", "ti,beaglebone-black";
>> part_number = "BS_PINMODE_P8_46_0x7";
>>
>>
>> exclusive-use =
>> "P8.46",
>> "gpio2_7";
>>
>>
>> fragment@0 {
>> target = <&am33xx_pinmux>;
>> __overlay__ {
>> bs_pinmode_P8_46_0x7: pinmux_bs_pinmode_P8_46_0x7 {
>> pinctrl-single,pins = <0x0a4 0x7>;
>> };
>> };
>> };
>>
>>
>> fragment@1 {
>> target = <&ocp>;
>> __overlay__ {
>> bs_pinmode_P8_46_0x7_pinmux {
>> compatible = "bone-pinmux-helper";
>> status = "okay";
>> pinctrl-names = "default";
>> pinctrl-0 = <&bs_pinmode_P8_46_0x7>;
>> };
>> };
>> };
>> };
>>
>> Then I've compiled dts and put dtbo in /lib/firmware. I can load the
>> overlay manually:
>>
>> root@beaglebone:~# cat /sys/devices/bone_capemgr.9/slots
>> 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,bspm_P8_46_7
>>
>> But when I tried to check pin config I got the next output:
>> root@beaglebone:~# cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pins |
>> grep "pin 71"
>> pin 71 (44e1091c) 00000000 pinctrl-single
>>
>> What's wrong with my dts why I can't change muxing for the pin? What am I
>> missing?
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
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>
>
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