Hello.
Yusuf Caglar AKYUZ wrote:
i'm trying to get an USB-stick running on a DVEVM-alike
hardware on a recent kernel, but the USB host appears
to be plain dead.
I've digged a little into the kernel and my result is, that
'platform_driver_probe' in the end of 'musb_init' never
ends calling 'musb_probe', thus resulting in the musb_driver
being deregistered and ignored by the kernel.
Digging deeper, the 'platform_driver_probe' enumerates the
'platform' bus but fails to find any suiting device. Thus, from
the sources, it appears as if the construction misses a
'platform_device' representing the USB host controller.
Because only the kernel and no hardware appears to be involved,
it looks like a silly kernel configuration problem to me. I write to
ask if someone knows the solution or could otherwise help.
I can produce the result with 'davinci_evm_dm644x_defconfig'.
You said DVEVM-alike, does it have i2c port expander as well for
VBUS control?
There's much more wisdom in controlling DRVVBUS via plain GPIO than
this horrible GPIO expander thing.
WBR, Sergei
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