Hi All
I am facing problem with PRU on 4.1.12-bone-rt-r16
The error is when i call
root@beaglebone:/home/amr/chp13/PRUclock# echo EBB-PRU-Example >
/sys/devices/platform/bone_capemgr/slots
-bash: echo: write error: Invalid argument
in dmesg it shows
[ 375.463548] bone_capemgr bone_capemgr: part_number 'EBB-PRU-Example',
version 'N/A'
[ 375.463611] bone_capemgr bone_capemgr: slot #8: override
[ 375.463650] bone_capemgr bone_capemgr: Using override eeprom data at
slot 8
[ 375.463693] bone_capemgr bone_capemgr: slot #8: 'Override Board
Name,00A0,Override Manuf,EBB-PRU-Example'
[ 375.464715] __of_adjust_tree_phandle_references: Could not find target
property 'fixup' @/__local_fixups__
[ 375.474644] bone_capemgr bone_capemgr: slot #8: Failed to resolve tree
Here is the dts file
/* Device Tree Overlay for enabling the pins that are used in Chapter 13
* This overlay is based on the BB-PRU-01 overlay
* Written by Derek Molloy for the book "Exploring BeagleBone: Tools and
* Techniques for Building with Embedded Linux" by John Wiley & Sons, 2014
* ISBN 9781118935125. Please see the file README.md in the repository root
* directory for copyright and GNU GPLv3 license information.
*/
/dts-v1/;
/plugin/;
/ {
compatible = "ti,beaglebone", "ti,beaglebone-black";
part-number = "EBB-PRU-Example";
version = "00A0";
/* This overlay uses the following resources */
exclusive-use =
"P9.11", "P9.13", "P9.27", "P9.28", "pru0";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
gpio_pins: pinmux_gpio_pins { // The GPIO pins
pinctrl-single,pins = <
0x070 0x07 // P9_11 MODE7 | OUTPUT | GPIO pull-down
0x074 0x27 // P9_13 MODE7 | INPUT | GPIO pull-down
>;
};
pru_pru_pins: pinmux_pru_pru_pins { // The PRU pin modes
pinctrl-single,pins = <
0x1a4 0x05 // P9_27 pr1_pru0_pru_r30_5, MODE5 | OUTPUT | PRU
0x19c 0x26 // P9_28 pr1_pru0_pru_r31_3, MODE6 | INPUT | PRU
>;
};
};
};
fragment@1 { // Enable the PRUSS
target = <&pruss>;
__overlay__ {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pru_pru_pins>;
};
};
fragment@2 { // Enable the GPIOs
target = <&ocp>;
__overlay__ {
gpio_helper {
compatible = "gpio-of-helper";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&gpio_pins>;
};
};
};
};
Thanks a lot
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/beagleboard/6225eebd-3f63-4bb2-a494-58d742ed0aab%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
