I tried doing that and this happened.
[ 0.000000] Kernel command line: console=ttyO0,115200n8
root=UUID=5df5404c-a947-481b-8730-2a4bb771d33e ro rootfstype=ext4 rootwait
coherent_pool=1M quiet cape_universal=enable
[ 3.925552] bone_capemgr bone_capemgr: Baseboard:
'A335BNLT,BBG1,BBG116044309'
[ 3.925587] bone_capemgr bone_capemgr:
compatible-baseboard=ti,beaglebone-black - #slots=4
[ 3.967034] bone_capemgr bone_capemgr: slot #0: '4D 7.0 LCD CAPE-
4DCAPE-70T ,00A3,4D SYSTEMS ,BB-BONE-LCD7-01'
[ 4.022910] bone_capemgr bone_capemgr: slot #1: No cape found
[ 4.082877] bone_capemgr bone_capemgr: slot #2: No cape found
[ 4.112856] bone_capemgr bone_capemgr: slot #3: 'TT3201 CAN Bus
Cape,05,TowerTech,TT3201-001'
[ 4.113369] bone_capemgr bone_capemgr: initialized OK.
[ 4.136126] bone_capemgr bone_capemgr: slot #3: Failed to resolve tree
[ 4.169402] bone_capemgr bone_capemgr: slot #3: Failed to resolve tree
[ 4.177396] bone_capemgr bone_capemgr: slot #0: dtbo
'BB-BONE-LCD7-01-00A3.dtbo' loaded; overlay id #0
[ 4.184870] bone_capemgr bone_capemgr: loader: failed to load slot-3
TT3201-001:05 (prio 0)
[ 14.661534] bone_capemgr bone_capemgr: part_number 'GPIO-Test', version
'N/A'
[ 14.661571] bone_capemgr bone_capemgr: slot #4: override
[ 14.661588] bone_capemgr bone_capemgr: Using override eeprom data at
slot 4
[ 14.661605] bone_capemgr bone_capemgr: slot #4: 'Override Board
Name,00A0,Override Manuf,GPIO-Test'
It also shows the following error:
[ 4.130051] of_resolve_phandles: Could not find symbol 'gpio4'
[ 4.136126] bone_capemgr bone_capemgr: slot #3: Failed to resolve tree
.DTS file for TT3201-001-05:
(with P9.27 as itself -- on the LCD overlay, i've changed it to P9.11)
/*
* Copyright (C) 2013 Tower Technologies
* Written by Alessandro Zummo <a.zu...@towertech.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/dts-v1/;
/plugin/;
/ {
compatible = "ti,beaglebone", "ti,beaglebone-black";
part-number = "TT3201-001";
version = "01";
/* state the resources this cape uses */
exclusive-use =
/* the pin header uses */
"P9.27", /* spi irq: gpio3_19 */
"P9.23", /* spi irq: gpio1_17 */
"P9.31", /* spi: spi1_sclk */
"P9.29", /* spi: spi1_d0 */
"P9.30", /* spi: spi1_d1 */
"P9.28", /* spi: spi1_cs0 */
"P9.42", /* spi: spi1_cs1 */
"P9.26", /* dcan1: dcan1_tx */
"P9.24", /* dcan1: dcan1_rx */
/* the hardware IP uses */
"gpio3_19",
"gpio1_17",
"spi1",
"dcan1";
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
bone_tt3201_dcan1_pins: bone_tt3201_dcan1_pins {
pinctrl-single,pins = <
0x180 0x02 /* uart1_rxd.d_can1_tx", OUTPUT | MODE2 */
0x184 0x32 /* uart1_txd.d_can1_rx", INPUT_PULLUP | MODE2 */
>;
};
bone_tt3201_spi1_pins: pinmux_bone_tt3201_spi1_pins {
pinctrl-single,pins = <
0x190 0x33 /* mcasp0_aclkx.spi1_sclk, RX_ENABLED | PULLUP | MODE3 */
0x194 0x33 /* mcasp0_fsx.spi1_d0, RX_ENABLED | PULLUP | MODE3 */
0x198 0x13 /* mcasp0_axr0.spi1_d1, OUTPUT_PULLUP | MODE3 */
0x19c 0x13 /* mcasp0_ahclkr.spi1_cs0, OUTPUT_PULLUP | MODE3 */
0x164 0x12 /* ecap0_in_pwm0_out.spi1_cs1, OUTPUT_PULLUP | MODE2 */
>;
};
bone_tt3201_mcp2515_0_pins: pinmux_bone_tt3201_0_mcp2515_pins {
pinctrl-single,pins = <
0x1a4 0x37 /* mcasp0_fsr.gpio3_19, RX_ENABLED | PULLUP | MODE7 */
>;
};
bone_tt3201_mcp2515_1_pins: pinmux_bone_tt3201_1_mcp2515_pins {
pinctrl-single,pins = <
0x044 0x37 /* gpmc_a1.gpio1_17, RX_ENABLED | PULLUP | MODE7 */
>;
};
};
};
fragment@1 {
target = <&spi1>;
__overlay__ {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&bone_tt3201_spi1_pins>;
cs-gpios = <&gpio4 17 0>, <&gpio1 7 0>;
mcp2515@0 {
compatible = "microchip,mcp2515";
reg = <1>; /* cs1 */
mode = <0>;
spi-max-frequency = <10000000>;
pinctrl-names = "default";
pinctrl-0 = <&bone_tt3201_mcp2515_1_pins>;
interrupt-parent = <&gpio2>;
interrupts = <17>;
mcp251x,oscillator-frequency = <16000000>;
mcp251x,irq-gpios = <&gpio2 17 0>;
mcp251x,stay-awake = <1>;
};
mcp2515@1 {
compatible = "microchip,mcp2515";
reg = <0>; /* cs0 */
mode = <0>;
spi-max-frequency = <10000000>;
pinctrl-names = "default";
pinctrl-0 = <&bone_tt3201_mcp2515_0_pins>;
interrupt-parent = <&gpio4>;
interrupts = <19>;
mcp251x,oscillator-frequency = <16000000>;
mcp251x,irq-gpios = <&gpio4 19 0>;
mcp251x,stay-awake = <1>;
mcp251x,enable-clkout = <1>;
};
};
};
fragment@2 {
target = <&dcan1>;
__overlay__ {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&bone_tt3201_dcan1_pins>;
};
};
};
GENERAL QUESTION: If I modify the overlay without changing anything in the
EEPROM, will the cape still work?
On Thu, Oct 27, 2016 at 9:57 AM, Robert Nelson <robertcnel...@gmail.com>
wrote:
> On Thu, Oct 27, 2016 at 8:03 AM, Aparna Velampudi
> <aparnavelamp...@gmail.com> wrote:
> > I'm using a Beaglebone Green and trying to interface with both an LCD7
> > (4DCAPE-70T) which is based off of the BB-BONE-LCD7-01:00A3 revision and
> the
> > CAN Cape (TT3201-001:05 revision).
> >
> > The LCD cape comes with an expansion header (all the pins that aren't
> used
> > by the LCD cape are ported to the header -- look at the data sheet linked
> > above to get the idea). Both capes work perfectly individually, but when
> I
> > try to use them together, I get the following output.
> >
> >
> > root@beaglebone:~# dmesg | grep cape
> > [ 0.000000] Kernel command line: console=ttyO0,115200n8
> > root=UUID=5df5404c-a947-481b-8730-2a4bb771d33e ro rootfstype=ext4
> rootwait
> > coherent_pool=1M quiet cape_universal=enable
> > [ 3.925280] bone_capemgr bone_capemgr: Baseboard:
> > 'A335BNLT,BBG1,BBG116044309'
> > [ 3.925315] bone_capemgr bone_capemgr:
> > compatible-baseboard=ti,beaglebone-black - #slots=4
> > [ 3.967132] bone_capemgr bone_capemgr: slot #0: '4D 7.0 LCD CAPE-
> > 4DCAPE-70T ,00A3,4D SYSTEMS ,BB-BONE-LCD7-01'
> > [ 4.023037] bone_capemgr bone_capemgr: slot #1: No cape found
> > [ 4.082948] bone_capemgr bone_capemgr: slot #2: No cape found
> > [ 4.112954] bone_capemgr bone_capemgr: slot #3: 'TT3201 CAN Bus
> > Cape,05,TowerTech,TT3201-001'
> > [ 4.113486] bone_capemgr bone_capemgr: initialized OK.
> > [ 4.130310] bone_capemgr bone_capemgr: slot #3: TT3201-001 conflict
> P9.27
> > (#0:BB-BONE-LCD7-01)
> > [ 4.139161] bone_capemgr bone_capemgr: slot #3: Failed verification
> > [ 4.154974] bone_capemgr bone_capemgr: slot #3: TT3201-001 conflict
> P9.27
> > (#0:BB-BONE-LCD7-01)
> > [ 4.165624] bone_capemgr bone_capemgr: slot #0: dtbo
> > 'BB-BONE-LCD7-01-00A3.dtbo' loaded; overlay id #0
> > [ 4.170778] bone_capemgr bone_capemgr: slot #3: Failed verification
> > [ 4.183178] bone_capemgr bone_capemgr: loader: failed to load slot-3
> > TT3201-001:05 (prio 0)
> > [ 14.366425] bone_capemgr bone_capemgr: part_number 'GPIO-Test',
> version
> > 'N/A'
> > [ 14.366464] bone_capemgr bone_capemgr: slot #4: override
> > [ 14.366482] bone_capemgr bone_capemgr: Using override eeprom data at
> slot
> > 4
> > [ 14.366499] bone_capemgr bone_capemgr: slot #4: 'Override Board
> > Name,00A0,Override Manuf,GPIO-Test'
> >
> >
> > I'm using Debian with the following kernel:
> >
> > root@beaglebone:~# uname -r
> > 4.1.15-ti-rt-r43
> >
> >
> > I've tried doing the obvious thing by taking the conflict pin (P9_27)
> > entirely out of the LCD .dts file by changing it to P9_11 (which isn't
> used
> > by either) (then compiled and put the .dtbo in /lib/firmware) but that
> > doesn't work. This is the .dts file for BB-BONE-LCD7-01-00A3
>
> after you "copy" it to /lib/firmware/
>
> run:
>
> sudo update-initramfs -uk `uname -r`
>
> and reboot...
>
> to update the version of the *.dtbo stored in the initramfs..
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
--
Regards,
Aparna Velampudi
Cell:248-686-4858
--
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