Excellent, thank you! I got my GPIO CS pins to work. For reference (in case
anyone needs the same information), here's my dts file:
/dts-v1/;
/plugin/;
/ {
compatible = "ti,beaglebone", "ti,beaglebone-black";
/* identification */
part-number = "BB-SPICAPE-01";
version = "00A0";
fragment@0 {
target = <&ocp>;
__overlay__ {
P9_17_pinmux { status = "disabled"; };
P9_18_pinmux { status = "disabled"; };
P9_21_pinmux { status = "disabled"; };
P9_22_pinmux { status = "disabled"; };
P8_10_pinmux { status = "disabled"; };
};
};
fragment@1 {
target = <&am33xx_pinmux>;
__overlay__ {
#address-cells = <1>;
#size-cells = <1>;
bb_spi0_pins: pinmux_bb_spi0_pins {
pinctrl-single,pins = <
0x150 0x30 /* spi0_sclk.spi0_sclk, INPUT_PULLUP | MODE0 */
0x154 0x30 /* spi0_d0.spi0_d0, INPUT_PULLUP | MODE0 */
0x158 0x10 /* spi0_d1.spi0_d1, OUTPUT_PULLUP | MODE0 */
0x15c 0x10 /* spi0_cs0.spi0_cs0, OUTPUT_PULLUP | MODE0 */
0x098 0x17 /* P8 10 gpio2_4.spi0_cs1 OUTPUT_PULLUP | MODE7 */
>;
};
};
};
fragment@2 {
target = <&spi0>; /* spi0 is numbered correctly */
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&bb_spi0_pins>;
cs-gpios = <0>, <&gpio2 4 0>;
spi0@0{
#address-cells = <1>;
#size-cells = <0>;
compatible = "linux,spidev";
reg = <0>;
spi-max-frequency = <16000000>;
};
spi0@1 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "linux,spidev";
reg = <1>;
spi-max-frequency = <16000000>;
};
};
};
};
On Tuesday, December 4, 2018 at 2:12:17 PM UTC-8, RobertCNelson wrote:
>
> On Tue, Dec 4, 2018 at 4:03 PM <[email protected] <javascript:>> wrote:
> >
> > Here's the output:
> >
> > git:/opt/scripts/:[0726131c362e3adfcf359f3e1debf5ff156e5bec]
> > eeprom:[A335BNLT000CyywwBBoxxxx]
> > model:[TI_AM335x_BeagleBone_Black]
> > dogtag:[Machinekit Debian Image 2018-09-16]
> > bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot
> 2018.09-00002-g0b54a51eee]:[location: dd MBR]
> > kernel:[4.14.69-ti-rt-r75]
> > uboot_overlay_options:[enable_uboot_overlays=1]
> >
> uboot_overlay_options:[uboot_overlay_addr4=/lib/firmware/BB-SPICAPE-01-00A0.dtbo]
>
>
> > uboot_overlay_options:[disable_uboot_overlay_audio=1]
> >
> uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo]
>
>
> > uboot_overlay_options:[enable_uboot_cape_universal=1]
> > pkg check: to individually upgrade run: [sudo apt install --only-upgrade
> <pkg>]
> > pkg:[bb-cape-overlays]:[4.4.20181120.0-0rcnee0~stretch+20181120]
> > pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517]
> > pkg:[kmod]:[23-2rcnee1~stretch+20171005]
> >
> pkg:[roboticscape]:[0.4.4-git20180608.0-0rcnee0~stretch+20180609]:[GOT_REPLACED_BY_NEXT]
>
>
> > WARNING:pkg:[librobotcontrol]:[NOT_INSTALLED]
> > pkg:[firmware-ti-connectivity]:[20170823-1rcnee1~stretch+20180328]
> > groups:[machinekit : machinekit adm kmem dialout cdrom floppy audio dip
> video plugdev users systemd-journal i2c bluetooth netdev gpio pwm eqep
> admin spi tisdk weston-launch xenomai cloud9ide]
> > cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1
> root=/dev/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M
> net.ifnames=0 quiet]
> > dmesg | grep pinctrl-single
> > [ 1.424240] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800
> size 568
> > [ 1.565570] pinctrl-single 44e10800.pinmux: pin PIN84 already
> requested by ocp:P9_22_pinmux; cannot claim for 48030000.spi
> > [ 1.576764] pinctrl-single 44e10800.pinmux: pin-84 (48030000.spi)
> status -22
> > [ 1.583861] pinctrl-single 44e10800.pinmux: could not request pin 84
> (PIN84) from group pinmux_bb_spi0_pins on device pinctrl-single
> > dmesg | grep gpio-of-helper
> > [ 1.445942] gpio-of-helper ocp:cape-universal: ready
> > END
>
> Ah i see what your doing now..
>
> Take a look at these 4 examples, your missing the "cape-universal"
> disable pins in fragment0, but you see how to use the 3rd cs-gpio in
> these exmples..
>
> P9_22_pinmux { status = "disabled"; }; /* RX3 */
>
>
> https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-mBC1-ETH-CLICK.dts
>
>
>
> https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-mBC2-ETH-CLICK.dts
>
>
>
> https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-mBC3-ETH-CLICK.dts
>
>
>
> https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-mBC4-ETH-CLICK.dts
>
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
--
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