msub: error running host mode on 3.1.0rc4

msub: error running host mode on 3.1.0rc4

[Tasslehoff Kjappfot]

We have a board similar to the beagleboard C3, but we have forced musb 
to host-mode and added an "smsc95xx" and an RJ45 connector instead. In 
2.6.39 I configured the musb driver to operate in host-mode, and that 
was all that was needed to make it work.

In 3.1.0rc4 that option has been removed from the Kconfig, and the 
default configuration of the musb driver is otg-mode. In my boardfile I 
changed the musb_board_data to:

static struct omap_musb_board_data musb_board_data = {
         .interface_type     = MUSB_INTERFACE_ULPI,
         .mode           = MUSB_HOST,
         .power          = 100,
}

That gives me the following output in dmesg:

[    0.120544] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[    0.120697] omap_device: musb-omap2430.-1: new worst case activate 
latency 0: 30517
[    0.120727] musb-hdrc musb-hdrc: musb_init_controller failed with 
status -19
[    0.120758] (NULL device *): gadget not registered.

Reading drivers/usb/musb/omap2430.c, it seems the problem is that no 
transceiver is configured, but I'm not sure if its a configuration 
problem or a bug.

Tasslehoff

Re: msub: error running host mode on 3.1.0rc4

[Tasslehoff Kjappfot]

On Sep 29, 2011, at 1:21 PM, Tasslehoff Kjappfot wrote:

> We have a board similar to the beagleboard C3, but we have forced musb to host-mode and added an "smsc95xx" and an RJ45 connector instead. In 2.6.39 I configured the musb driver to operate in host-mode, and that was all that was needed to make it work.
> 
> In 3.1.0rc4 that option has been removed from the Kconfig, and the default configuration of the musb driver is otg-mode. In my boardfile I changed the musb_board_data to:
> 
> static struct omap_musb_board_data musb_board_data = {
>        .interface_type     = MUSB_INTERFACE_ULPI,
>        .mode           = MUSB_HOST,
>        .power          = 100,
> }
> 
> That gives me the following output in dmesg:
> 
> [    0.120544] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
> [    0.120697] omap_device: musb-omap2430.-1: new worst case activate latency 0: 30517
> [    0.120727] musb-hdrc musb-hdrc: musb_init_controller failed with status -19
> [    0.120758] (NULL device *): gadget not registered.
> 
> Reading drivers/usb/musb/omap2430.c, it seems the problem is that no transceiver is configured, but I'm not sure if its a configuration problem or a bug.
> 
> Tasslehoff

Finally got around to looking at this a bit more. The issue is that no musb->isr is configured. omap2430.c doesn't set up an isr, so it should use the generic one. That one is, however, enclosed in the following #ifdef's:

#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_SOC_OMAP3430) ||                                                                                                    
defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_ARCH_U8500) ||
defined(CONFIG_ARCH_U5500)

None of these are set in my defconfig, but I see that CONFIG_SOC_OMAP3430 was set in the old one. Should this one be set for my 3530-board, or is there a missing condition here?

- Tasslehoff