[U-Boot] [PATCH v3 1/3] ARM: Tegra: FDT: Add USB EHCI function for T30/T114
Marek Vasut
marex at denx.de
Mon Jun 17 22:42:29 CEST 2013
Dear Stephen Warren,
> On 06/17/2013 03:09 AM, Jim Lin wrote:
> > Add DT node for USB EHCI function.
> > Add support for T30-Cardhu, T30-Beaver, T114-Dalmore boards.
>
> This patch shouldn't touch both DT files and code at the same time. The
> code changes should be part of the patch to the USB driver.
>
> > diff --git a/board/nvidia/dts/tegra30-cardhu.dts
> > b/board/nvidia/dts/tegra30-cardhu.dts
> >
> > + usb at 7d008000 {
> > + nvidia,vbus-gpio = <&gpio 233 3>; /* PDD1, EN_3V3_PU */
> > + status = "okay";
> > + };
>
> PDD1 is the wrong signal. That enables a 100L pullup to a bunch of
> different signals, including the VBUS GPIO. Instead, I think you should
> be using PEX_L1_PRSNT / EN_USB3_VBUS_OC / PDD4, which co-incidentally
> matches the value in the Beaver .dts file in this patch, most likely
> because Beaver is closely based on Cardhu.
Thanks for reviewing those, will wait for V4.
Best regards,
Marek Vasut
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