I used roughly the following process;
1) grab the original source file & copy to a local version
wget
https://raw.githubusercontent.com/beagleboard/linux/3.8.13-bone66/firmware/capes/bone_pwm_P8_13-00A0.dts
cp bone_pwm_P8_13-00A0.dts bone_pwm_local-00A0.dts
2) change the part-number in your local version of the .dts file
< part-number = "bone_pwm_P8_13";
---
> part-number = "bone_pwm_local_P8_13";
3) compile & copy to /lib/firmware
dtc -O dtb -o bone_pwm_local-00A0.dtbo -b 0 -@ bone_pwm_local-00A0.dts
cp bone_pwm_local-00A0.dtbo /lib/firmware/
4) load the am33xx_pwm overlay, plus your local config for your pin
echo am33xx_pwm >/sys/devices/bone_capemgr.*/slots
echo bone_pwm_local >/sys/devices/bone_capemgr.*/slots
Those steps should be enough;
root@beaglebone:~# ls /sys/devices/ocp.*/pwm_test_P8_13.*/
driver duty modalias period polarity power run subsystem uevent
Regards,
Jon
On 04/12/14 23:21, [email protected] wrote:
OK, I did the renaming from "bone_pwm_P8_13-00A0.* " into
"bone_pwm_test-00A0.*" and after reboot I have:
in 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-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-UART1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,SPI-4SS
9: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_eqep2b
10: ff:P-O-L Override Board Name,00A0,Override Manuf,bone_pwm_test
11: ff:P-O-L Override Board Name,00A0,Override Manuf,am33xx_pwm
but in /sys/devices/ocp.3/pwm_test_P8_13.16 I have only:
root@beaglebone:/sys/devices/ocp.3/pwm_test_P8_13.16# ls
modalias power subsystem uevent
My bone_pwm_test-00A0.dts and bone_pwm_test-00A0.dtb0 are in /lib/firmware
Do I need to make any changes to them after all (as the renaming only
doesn't work)?
Jan
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