[U-Boot] [PATCH V5 04/18] usb: gadget: ether set wMaxPacketSize
Marek Vasut
marex at denx.de
Fri Sep 27 19:54:59 CEST 2013
Dear Troy Kisky,
> set wMaxPacketSize for full speed descriptors
> fs_source_desc, fs_sink_desc to 64.
>
> Full-speed bulk endpoint can have a maximum packet size of
> 8, 16, 32, or 64 bytes, so choice 64.
>
> The hs_source_desc, hs_sink_desc, already have their wMaxPacketSize
> set to 512. That is the only legal value for high speed bulk endpoints.
>
> Strictly speaking, this patch is not needed because
> usb_ep_autoconfig will call ep_matches which will
> override wMaxPacketSize for BULK endpoints only with
> the size associated with the endpoint setup by the udc driver.
> But if you want to rely on this, you may as well combine the
> full speed descriptor with the high speed descriptor to
> minimize confusion.
>
> Signed-off-by: Troy Kisky <troy.kisky at boundarydevices.com>
Picking for -next, thanks
Best regards,
Marek Vasut
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