Re: [beagleboard] Re: Cannot set pins by overlay

2015-12-31 Thread Bremenpl 

Didnt know about this page, thabk you a lot :).


On December 31, 2015 11:30:53 AM Davide Picchi  wrote:


And if you need some help I can suggest you to try the code generated in
this page

.

At least you have the chance to check, whether your code is right or not.
You can simplify debugging of your code.

Regards

Am Mittwoch, 9. September 2015 18:41:21 UTC+2 schrieb bremenpl:


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 = <_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 = <>;
__overlay__ {
gpio_helper {
compatible = "gpio-of-helper";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <_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) 0027 pinctrl-single
root@beaglebone:~# cat $PINS | grep "pin 54"
pin 54 (44e108d8) 002f pinctrl-single


Did I forget something? I really cant think of anything. I would really
apreciate all help here!



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[beagleboard] Re: Cannot set pins by overlay

2015-12-31 Thread Davide Picchi 
And if you need some help I can suggest you to try the code generated in 
this page 

.

At least you have the chance to check, whether your code is right or not. 
You can simplify debugging of your code.

Regards

Am Mittwoch, 9. September 2015 18:41:21 UTC+2 schrieb bremenpl:
>
> 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 = <_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 = <>;
> __overlay__ {
> gpio_helper {
> compatible = "gpio-of-helper";
> status = "okay";
> pinctrl-names = "default";
> pinctrl-0 = <_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) 0027 pinctrl-single 
> root@beaglebone:~# cat $PINS | grep "pin 54"
> pin 54 (44e108d8) 002f pinctrl-single 
>
>
> Did I forget something? I really cant think of anything. I would really 
> apreciate all help here!
>

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Re: [beagleboard] Re: Cannot set pins by overlay

2015-12-31 Thread Davide Picchi 
I discovered that (at least in my ubuntu Linux arm 4.1.13-ti-r36) trying to
load and unload overlays on the fly doesn't work.
I did it many times, in the right way. But you should reboot your system at
first and THEN try to load your overlay.
Your changes at the pinmux should be visible now.

I don't know why one should reboot the system everytime.

2015-12-31 11:39 GMT+01:00 Bremenpl :

> Didnt know about this page, thabk you a lot :).
>
> On December 31, 2015 11:30:53 AM Davide Picchi  wrote:
>
>> And if you need some help I can suggest you to try the code generated in
>> this page
>> 
>> .
>>
>> At least you have the chance to check, whether your code is right or not.
>> You can simplify debugging of your code.
>>
>> Regards
>>
>> Am Mittwoch, 9. September 2015 18:41:21 UTC+2 schrieb bremenpl:
>>>
>>> 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 = <_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 = <>;
>>> __overlay__ {
>>> gpio_helper {
>>> compatible = "gpio-of-helper";
>>> status = "okay";
>>> pinctrl-names = "default";
>>> pinctrl-0 = <_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) 0027 pinctrl-single
>>> root@beaglebone:~# cat $PINS | grep "pin 54"
>>> pin 54 (44e108d8) 002f pinctrl-single
>>>
>>>
>>> Did I forget something? I really cant think of anything. I would really
>>> apreciate all help here!
>>>
>> --
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>>
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