Other Parts Discussed in Thread: TPS65218
After resolving this issue, I was able to load g_ether / g_mass_storage, but now my host computer isn't recognizing the SBC as a gadget device.
I'm watching dmesg on the host computer, and don't see any information when I plug in / unplug the SBC.
Here's what I'm running on the SBC:
dd bs=1M count=64 if=/dev/zero of=/backing_file modprobe g_mass_storage file=/backing_file
And here's the output from dmesg:
~# dmesg | tail
[ 921.136718] LUN: file: /backing_file
[ 921.136732] Number of LUNs=1
[ 921.136761] g_mass_storage gadget: adding config #1 'Linux File-Backed Storage'/bf1510d4
[ 921.137186] g_mass_storage gadget: adding 'Mass Storage Function'/de5dad80 to config 'Linux File-Backed Storage'/bf1510d4
[ 921.140897] g_mass_storage gadget: I/O thread pid: 1322
[ 921.140964] g_mass_storage gadget: cfg 1/bf1510d4 speeds: high full
[ 921.140978] g_mass_storage gadget: interface 0 = Mass Storage Function/de5dad80
[ 921.141013] g_mass_storage gadget: Mass Storage Gadget, version: 2009/09/11
[ 921.141029] g_mass_storage gadget: userspace failed to provide iSerialNumber
[ 921.141039] g_mass_storage gadget: g_mass_storage ready
Running /proc/interrupts doesn't show any interrupts for musb-hdrc.0 / musb-hdrc.1, which I would think there would be if the physical connection is being made:
# cat /proc/interrupts
CPU0
16: 61879 INTC 68 Level gp_timer
18: 0 INTC 3 Level arm-pmu
20: 1561 INTC 12 Level 49000000.edma_ccint
22: 23 INTC 14 Level 49000000.edma_ccerrint
26: 0 INTC 96 Level 44e07000.gpio
27: 0 INTC 98 Level 4804c000.gpio
28: 0 INTC 32 Level 481ac000.gpio
29: 0 INTC 62 Level 481ae000.gpio
30: 3212 INTC 72 Level OMAP UART0
31: 4250 INTC 73 Level OMAP UART1
35: 3 INTC 71 Level 4802a000.i2c
36: 4 INTC 30 Level 4819c000.i2c
37: 13 INTC 64 Level mmc0
38: 5371 INTC 28 Level mmc1
39: 55156 INTC 29 Level mmc2
47: 0 INTC 75 Level rtc0
48: 0 INTC 76 Level rtc0
49: 64578 INTC 36 Level tilcdc
52: 0 INTC 80 Level 48038000.mcasp_tx
53: 0 INTC 81 Level 48038000.mcasp_rx
54: 0 INTC 111 Level 48310000.rng
55: 1 INTC 37 Level SGX ISR
57: 1 INTC 18 Level musb-hdrc.0
58: 1 INTC 19 Level musb-hdrc.1
60: 0 44e07000.gpio 6 Edge 48060000.mmc cd
61: 0 INTC 7 Level tps65218
Err: 0
I ran the script from this topic, here is the output:
Linux dorado 4.14.40-ti-jumpnow #1 PREEMPT Wed Jul 31 23:53:48 UTC 2019 armv7l armv7l armv7l GNU/Linux
USB is initialized
usb@47401000: host, okay
usb@47401800: otg, okay
Gadget Kernel Config: g_ether is enabled
Gadget Kernel Config: g_mass_storage is enabled
Gadget Kernel Config: g_serial is enabled
gadget driver loaded: (none)
The list of USB gadget drivers installed:
/lib/modules/4.14.40-ti-jumpnow/kernel/drivers/usb/gadget/:
function/
legacy/
libcomposite.ko
udc/
/lib/modules/4.14.40-ti-jumpnow/kernel/drivers/usb/gadget/function:
u_ether.ko
u_serial.ko
usb_f_acm.ko
usb_f_ecm.ko
usb_f_ecm_subset.ko
usb_f_eem.ko
usb_f_fs.ko
usb_f_hid.ko
usb_f_mass_storage.ko
usb_f_ncm.ko
usb_f_obex.ko
usb_f_rndis.ko
usb_f_serial.ko
usb_f_uvc.ko
/lib/modules/4.14.40-ti-jumpnow/kernel/drivers/usb/gadget/legacy:
g_acm_ms.ko
g_cdc.ko
g_ether.ko
g_ffs.ko
g_hid.ko
g_mass_storage.ko
g_multi.ko
g_serial.ko
gadgetfs.ko
/lib/modules/4.14.40-ti-jumpnow/kernel/drivers/usb/gadget/udc:
bdc/
dummy_hcd.ko
fotg210-udc.ko
fusb300_udc.ko
gr_udc.ko
m66592-udc.ko
mv_u3d_core.ko
mv_udc.ko
net2272.ko
pxa27x_udc.ko
r8a66597-udc.ko
snps_udc_core.ko
snps_udc_plat.ko
udc-xilinx.ko
/lib/modules/4.14.40-ti-jumpnow/kernel/drivers/usb/gadget/udc/bdc:
bdc.ko
