Re: am3517: USB state in 3.5-rc6

[Yegor Yefremov <yegor_sub1@visionsystems.de>]

Am 24.07.2012 17:30, schrieb Jan Lübbe:
> Hi,
>
> On Mon, 2012-07-23 at 09:08 +0200, Yegor Yefremov wrote:
>> After getting MMC working I now have following issues: both musb and EHCI make problems.
>>
>> musb:
>>
>> musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
>> musb-am35x musb-am35x: failed to get clock
>> musb-am35x: probe of musb-am35x failed with error -2  
> I've seen the same problem after merging omap-devel-d-for-3.6 onto v3.5.
> (see http://git.kernel.org/?p=linux/kernel/git/pjw/omap-pending.git;a=tag;h=refs/tags/omap-devel-d-for-3.6)
>
> So far I've worked around it like this (I'm not sure this is the correct
> approach, but it works):
>
> diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c
> index 9f3eda9..2184693 100644
> --- a/drivers/usb/musb/am35x.c
> +++ b/drivers/usb/musb/am35x.c
> @@ -480,14 +480,14 @@ static int __devinit am35x_probe(struct platform_device *pdev)
>                 goto err1;
>         }
>  
> -       phy_clk = clk_get(&pdev->dev, "fck");
> +       phy_clk = clk_get(&pdev->dev, "hsotgusb_ick");
>         if (IS_ERR(phy_clk)) {
>                 dev_err(&pdev->dev, "failed to get PHY clock\n");
>                 ret = PTR_ERR(phy_clk);
>                 goto err2;
>         }
>  
> -       clk = clk_get(&pdev->dev, "ick");
> +       clk = clk_get(&pdev->dev, "hsotgusb_fck");
>         if (IS_ERR(clk)) {
>                 dev_err(&pdev->dev, "failed to get clock\n");
>                 ret = PTR_ERR(clk);

Jan, thanks for the patch. It helped. I've taken the upcoming vanila 3.6 kernel and got both musb and EHCI running. I will test it further after linux-omap will be merged with linux-2.6 after merge window is closed.

Yegor
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