Hi Fabiio, On Sun, Oct 5, 2014 at 2:09 PM, Fabio Estevam <festevam@xxxxxxxxx> wrote: > From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx> > > There is only one mx21 based hardware currently supported in the > kernel: arch/arm/mach-imx/mach-mx21ads.c. > > mx21ads does not register the USB host driver, which makes imx21-hcd > to not have any user. > I don't actually agree with this. For me the kernel supports the i.MX21 SOC today. I consider removing USB support to be a step backwards. I don't consider the set of hardware the kernel supports to be defined by the boards but by the SoCs. I did not submit a patch to add support for the mx21-ads at the time because I didn't develop on that board but custom i.MX21 based hardware so had no way of testing on mx21-ads. > There have been some patches recently adding device tree support to > mx21. If someone in the future still gets interested in using USB on > mx21, then the chipidea driver could be used instead. > Are you sure about that? The i.MX21 USB hardware is specific, not EHCI like chipidea... If this is a viable a path for USB support on i.MX21 then I'm fine with that but I really don't think it is. Also I think that, even if it were possible the patches adding chipidea for i.MX21 should be merged at the same time so as not to have a functional regession. Regards, Martin -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
