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Date: Sun, 31 Aug 2014 12:04:08 -0700 From: Andrew Bresticker <abrestic@...omium.org> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: Stephen Warren <swarren@...dotorg.org>, Thierry Reding <thierry.reding@...il.com>, "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, Russell King <linux@....linux.org.uk>, Jassi Brar <jassisinghbrar@...il.com>, Linus Walleij <linus.walleij@...aro.org>, Mathias Nyman <mathias.nyman@...el.com>, Grant Likely <grant.likely@...aro.org>, Alan Stern <stern@...land.harvard.edu>, Arnd Bergmann <arnd@...db.de>, Kishon Vijay Abraham I <kishon@...com>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org> Subject: Re: [PATCH v2 6/9] usb: xhci: Add NVIDIA Tegra xHCI host-controller driver On Sat, Aug 30, 2014 at 2:15 PM, Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote: > On Mon, Aug 18, 2014 at 10:08:22AM -0700, Andrew Bresticker wrote: >> Add support for the on-chip xHCI host controller present on Tegra SoCs. >> >> The driver is currently very basic: it loads the controller with its >> firmware, starts the controller, and is able to service messages sent >> by the controller's firmware. The hardware supports device mode as >> well as lower-power operating modes, but support for these is not yet >> implemented here. > > So you are saying the device doesn't really work? Can it handle USB > transactions properly? Huh? It's just as functional as any other xHCI platform host. Perhaps I should have been more clear about "lower-power operating modes": this refers to the runtime powergating of the controller's SuperSpeed and host-controller logic and has nothing to do with USB link/hub/device power management. > I have a jetson board here, is this the controller for that hardware? > Can I test this series on that platform, or is it for something else? Yup, that's the platform I primarily used for testing this series. >> +static const struct tegra_xhci_soc_config tegra124_soc_config = { >> + .firmware_file = "nvidia/tegra124/xusb.bin", >> +}; >> +MODULE_FIRMWARE("nvidia/tegra124/xusb.bin"); > > Has this file been submitted to the linux-firmware tree? It has been posted, see https://patchwork.ozlabs.org/patch/384013/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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