I have the following overlay that I am trying to get working on 4.1.x
I have tested with the UART4 & UART2 overlays provided and they work fine
but I want to combine it into a single overlay and also add in GPIO3_19
which delivers a PPS signal.
I compile the overlay fine with no errors and copy it across to
/lib/firmware/PFRADAR.dtbo
However when I then go to run I get the following...
root@beaglebone:~# echo 'BBB-PF' > /sys/devices/platform/bone_capemgr/slots
-su: echo: write error: No such file or directory
Overlay as follows...
/dts-v1/;
/plugin/;
/ {
compatible = "ti,beaglebone-black";
/* identification */
part-number = "BBB-PF";
version = "00A0";
/* state the resources this cape uses */
exclusive-use =
/* the pin header uses */
"P9.11", /* uart4_rxd */
"P9.13", /* uart4_txd */
"P9.22", /* uart2_rxd */
"P9.21", /* uart2_txd */
"P9.27", /* GPIO3_19 */
/* the hardware ip uses */
"uart2", /* 0-based counting */
"uart4", /* 0-based counting */
"gpio3_19"; /* 0-based counting */
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
receiver_uart2_pins: pinmux_receiver_uart2_pins {
pinctrl-single,pins = <
0x150 0x26 /* P9.22 uart2_rxd MODE6
INPUT (RX) */
0x154 0x06 /* P9.21 uart2_txd MODE6
OUTPUT (TX) */
>;
};
gps_uart4_pins: pinmux_gps_uart4_pins {
pinctrl-single,pins = <
0x70 0x26 /* P9.11 uart4_rxd MODE6
INPUT (RX) */
0x74 0x06 /* P9.13 uart4_txd MODE6
OUTPUT (TX) */
>;
};
gps_pps_pins: pinmux_gps_pps_pins {
pinctrl-single,pins = <
0x1A4 0xf /* P9.27 gpio3_19 */
>;
};
};
};
fragment@1 {
target = <&uart3>; /* 1-based counting */
__overlay__ {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&gps_uart2_pins>;
};
};
fragment@2 {
target = <&uart5>; /* 1-based counting */
__overlay__ {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&gps_uart4_pins>;
};
};
fragment@3 {
target = <&ocp>;
__overlay__ {
pps {
compatible = "pps-gpio";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&gps_pps_pins>;
gpios = <&gpio4 19 0 >; /* 1-based counting
*/
assert-rising-edge;
};
};
};
};
--
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