Messages in this thread | | | Date | Mon, 4 Mar 2013 12:38:33 -0500 (EST) | From | Alan Stern <> | Subject | Re: [PATCH] usb: host: tegra: Reset Tegra USB controller before init |
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On Mon, 4 Mar 2013, Stephen Warren wrote:
> On 03/04/2013 12:55 AM, Venu Byravarasu wrote: > > Stephen Warren wrote at Thursday, February 28, 2013 11:47 PM: > >> On 02/27/2013 11:36 PM, Venu Byravarasu wrote: > >>> To clear any configurations made by U-Boot on Tegra USB controller, > >>> reset it before init in probe. > >> > >>> diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c > >> > >>> @@ -691,6 +692,10 @@ static int tegra_ehci_probe(struct platform_device > >> *pdev) > >>> if (err) > >>> goto fail_clk; > >>> > >>> + tegra_periph_reset_assert(tegra->clk); > >>> + udelay(1); > >>> + tegra_periph_reset_deassert(tegra->clk);
> OK, in that case I have no objection to this patch. > > I'd like to hold off on applying this though; I suspect I'll want to > take the Tegra USB patches through the Tegra tree rather than the USB > tree again for the 3.10 kernel cycle. I think I may have screwed the > pooch on the DT binding I set up for the USB controller clocks, and > fixing this may require some Tegra DT changes, which would be easiest > taken through the Tegra tree, and so to reduce conflicts in the USB > code, taking the rest through there migth just be easiest. > > Alan, Greg, if you're OK with this patch now, or for any revised > version, an Ack so I can take it through the Tegra tree would be great, > thanks.
I have no other objections.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Alan Stern
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