I need to evaluate USB support on OMAP-L137 EVM, Board rev D , provided with Arago Linux Kernel 2.6.36
I figured out that, apart the standard OHCI HCD support, the Inventra Highspeed Dual Role Controller support must be enabled.
In such case however the kernel cannot be compiled.
scripts/kconfig/conf --silentoldconfig arch/arm/Kconfig
CHK include/linux/version.h
CHK include/generated/utsrelease.h
make[1]: `include/generated/mach-types.h' is up to date.
CALL scripts/checksyscalls.sh
CHK include/generated/compile.h
CC arch/arm/mach-davinci/usb.o
CC arch/arm/mach-davinci/board-da830-evm.o
LD arch/arm/mach-davinci/built-in.o
GZIP kernel/config_data.gz
IKCFG kernel/config_data.h
CC kernel/configs.o
LD kernel/built-in.o
CC drivers/usb/musb/musb_core.o
CC drivers/usb/musb/musb_virthub.o
CC drivers/usb/musb/musb_host.o
CC drivers/usb/musb/musb_debugfs.o
CC drivers/usb/musb/cppi_dma.o
drivers/usb/musb/cppi_dma.c: In function 'cppi_interrupt':
drivers/usb/musb/cppi_dma.c:1159: warning: 'flags' may be used uninitialized in this function
LD drivers/usb/musb/musb_hdrc.o
LD drivers/usb/musb/built-in.o
LD drivers/built-in.o
LD vmlinux.o
MODPOST vmlinux.o
GEN .version
CHK include/generated/compile.h
UPD include/generated/compile.h
CC init/version.o
LD init/built-in.o
LD .tmp_vmlinux1
drivers/built-in.o: In function `musb_stop':
hid-quirks.c:(.text+0x5f6a8): undefined reference to `musb_platform_disable'
drivers/built-in.o: In function `musb_shutdown':
hid-quirks.c:(.text+0x5f710): undefined reference to `musb_platform_disable'
drivers/built-in.o: In function `musb_mode_store':
hid-quirks.c:(.text+0x5f984): undefined reference to `musb_platform_set_mode'
drivers/built-in.o: In function `musb_start':
hid-quirks.c:(.text+0x60340): undefined reference to `musb_platform_enable'
drivers/built-in.o: In function `musb_probe':
hid-quirks.c:(.init.text+0x3868): undefined reference to `musb_platform_init'
hid-quirks.c:(.init.text+0x38f8): undefined reference to `musb_platform_disable'
hid-quirks.c:(.init.text+0x40c8): undefined reference to `musb_platform_exit'
make: *** [.tmp_vmlinux1] Error 1
If in .config I limit OHCI HCD support, the kernel will be compiled, but the target will hang..
Uncompressing Linux... done, booting the kernel.
Linux version 2.6.36-rc7-28053-gd800d76 (venturi@linux-rs) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #16 PREEMPT Fri Oct 29 13:59:16 CEST 2010
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: DaVinci DA830/OMAP-L137/AM17x EVM
Memory policy: ECC disabled, Data cache writethrough
DaVinci da830/omap-l137 rev1.0 variant 0x0
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 15240
Kernel command line: console=ttyS2,115200n8 noinitrd rw root=/dev/nfs nfsroot=192.168.1.69:/mnt/omap-mv,nolock ip=192.168.1.72 netmask=255.255.255.0 mem=60M
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 60MB = 60MB total
Memory: 57284k/57284k available, 4156k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xff000000 - 0xffe00000 ( 14 MB)
vmalloc : 0xc4000000 - 0xfea00000 ( 938 MB)
lowmem : 0xc0000000 - 0xc3c00000 ( 60 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.init : 0xc0008000 - 0xc0024000 ( 112 kB)
.text : 0xc0024000 - 0xc032c000 (3104 kB)
.data : 0xc0340000 - 0xc035f940 ( 127 kB)
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Hierarchical RCU implementation.
RCU-based detection of stalled CPUs is disabled.
Verbose stalled-CPUs detection is disabled.
NR_IRQS:245
Console: colour dummy device 80x30
Calibrating delay loop... 149.50 BogoMIPS (lpj=747520)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
DaVinci: 128 gpio irqs
regulator: core version 0.5
regulator: dummy:
NET: Registered protocol family 16
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
pcf857x: probe of 1-003f failed with error -121
Switching to clocksource timer0_0
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
msgmni has been set to 111
io scheduler noop registered (default)
ramoops: invalid size specification
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0x1c42000 (irq = 25) is a 16550A
serial8250.0: ttyS1 at MMIO 0x1d0c000 (irq = 53) is a 16550A
serial8250.0: ttyS2 at MMIO 0x1d0d000 (irq = 61) is a 16550A
console [ttyS2] enabled
brd: module loaded
loop: module loaded
Generic platform RAM MTD, (c) 2004 Simtec Electronics
spi_davinci spi_davinci.0: DMA: supported
spi_davinci spi_davinci.0: DMA: RX channel: 14, TX channel: 15, event queue: 0
m25p80 spi0.0: found w25x64, expected w25x32
m25p80 spi0.0: w25x64 (8192 Kbytes)
mtd .name = m25p80, .size = 0x800000 (8MiB) .erasesize = 0x00001000 (4KiB) .numeraseregions = 0
partitions[0] = {.name = DSP-UBL, .offset = 0x0, .size = 0x2000 (8KiB) }
partitions[1] = {.name = ARM-UBL, .offset = 0xffffffffffffffff, .size = 0x6000 (24KiB) }
partitions[2] = {.name = U-Boot, .offset = 0xffffffffffffffff, .size = 0x38000 (224KiB) }
partitions[3] = {.name = U-Boot-Environment, .offset = 0xffffffffffffffff, .size = 0x4000 (16KiB) }
partitions[4] = {.name = Kernel, .offset = 0xffffffffffffffff, .size = 0x0 (0KiB) }
Creating 5 MTD partitions on "m25p80":
0x000000000000-0x000000002000 : "DSP-UBL"
mtd: Giving out device 0 to DSP-UBL
0x000000002000-0x000000008000 : "ARM-UBL"
mtd: Giving out device 1 to ARM-UBL
0x000000008000-0x000000040000 : "U-Boot"
mtd: Giving out device 2 to U-Boot
0x000000040000-0x000000044000 : "U-Boot-Environment"
mtd: Giving out device 3 to U-Boot-Environment
0x000000044000-0x000000800000 : "Kernel"
mtd: Giving out device 4 to Kernel
spi_davinci spi_davinci.0: Controller at 0xfec41000
davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
davinci_mdio davinci_mdio.0: detected phy mask fffffff1
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[1]: device 0:01, driver unknown
davinci_mdio davinci_mdio.0: phy[2]: device 0:02, driver unknown
davinci_mdio davinci_mdio.0: phy[3]: device 0:03, driver unknown
console [netcon0] enabled
netconsole: network logging started
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
ohci ohci.0: DA8xx OHCI
ohci ohci.0: new USB bus registered, assigned bus number 1
Waiting for USB PHY clock good...
It seems that at least for standard controller mode, USB1 and USB2 support is granted in Arago,
so maybe some details in the kernel configuration are wrong ?
My .config is attached.
Thank you in advance for any hint on the subject.
