Hi,
I started reading abou dts files a few days ago and wrote one to change the
lasts P8 pins' mode, but I can't load my dtbo to
*/sys/devices/platform/bone_capemgr/slots* with *echo*. Everytime I do
that, my terminal gets no response and I get stuck (even ctrl + C does not
work).
I tried disabling other capes like HDMI on *uEnv*, upgrading kernel,
changing pinmode through *config-pin* (which returns no file/directory
error), changing boards (I have access to a few BBBs), disabling/enabling
universal cape and loading internet capes (from kiloblaser
<http://www.kilobaser.com/blog/2014-07-28-beaglebone-black-devicetreeoverlay-generator>,
bbbadventures <http://bbbadventures.blogspot.com.br/2013/06/pinmuxing.html>)
and default ones (like cape-universaln). I ought to think it must be
something really stupid I'm missing, because I found nothing regarding this
kind of error so far.
My custom dts:
/dts-v1/;
/plugin/;
/ {
compatible = "ti,beaglebone", "ti,beaglebone-black";
/* identification */
part-number = "bb-gpio";
/*version = "00A0";*/
/* state the resources this cape uses */
exclusive-use =
"P8.42",
"P8.43",
"P8.44",
"P8.46",
"gpio2_11",
"gpio2_8",
"gpio2_9",
"gpio2_7";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
bb_gpio_pins: pinmux_bb_gpio_pins {
pinctrl-single,pins = <
0x0b4 0x0f /* P8_42 GPIO2_11 */
0x0a8 0x0f /* P8_43 GPIO2_8 */
0x0ac 0x0f /* P8_44 GPIO2_9 */
0x0a4 0x0f /* P8_42 GPIO2_7 */
>;
};
};
};
fragment@1 {
target = <&gpio>;
__overlay__ {
bbgpio : gpio {
pinctrl-names = "default";
pinctrl-0 = <&bb_gpio_pins>;
status = "okay";
/*oe {
gpio-name = "oe";
gpio = <&gpio3 11 0x00>;
output;
};
clk {
gpio-name = "clk";
gpio = <&gpio3 8 0x00>;
output;
};
le {
gpio-name = "le";
gpio = <&gpio3 9 0x00>;
output;
};
sdi {
gpio-name = "sdi";
gpio = <&gpio3 7 0x00>;
output;
};*/
};
};
};
};
Last lines of dmesg:
[ 64.071193] pru-rproc 4a334000.pru0: PRU rproc node
/ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a334000 probed successfully
[ 64.090943] remoteproc remoteproc2: 4a338000.pru1 is available
[ 64.091062] pru-rproc 4a338000.pru1: PRU rproc node
/ocp/pruss_soc_bus@4a326000/pruss@4a300000/pru@4a338000 probed successfully
[ 321.616414] bone_capemgr bone_capemgr: part_number 'bb-gpio', version
'N/A'
[ 321.616478] bone_capemgr bone_capemgr: slot #4: override
[ 321.630993] bone_capemgr bone_capemgr: slot #4: auto loading handled by
U-Boot
uname -a (right now):
Linux arm 4.9.41-ti-r53 #1 SMP PREEMPT Thu Aug 10 02:34:57 UTC 2017 armv7l
GNU/Linux
pinctrl pins (71 ~ 75):
pin 71 (PIN71) 44e1091c 00000000 pinctrl-single
pin 72 (PIN72) 44e10920 00000000 pinctrl-single
pin 73 (PIN73) 44e10924 00000000 pinctrl-single
pin 74 (PIN74) 44e10928 00000000 pinctrl-single
pin 75 (PIN75) 44e1092c 00000030 pinctrl-single
Can anyone point out what I may be missing?
Best regards,
Marco
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