[U-Boot] Regression in fastboot on X15 due to CDCE913 enabling

Tero Kristo t-kristo at ti.com
Thu Oct 24 12:54:10 UTC 2019

On 24/10/2019 13:32, Sam Protsenko wrote:
> Hi Tero,
> On Thu, Oct 24, 2019 at 10:32 AM Tero Kristo <t-kristo at ti.com> wrote:
>> On 23/10/2019 17:20, Sam Protsenko wrote:
>>> + fixed U-Boot mailing list address
>>> On Wed, Oct 23, 2019 at 3:13 PM Sam Protsenko
>>> <semen.protsenko at linaro.org> wrote:
>>>> Hi Tero,
>>>> This patch was merged in U-Boot/master recently:
>>>>       e8e683d33b0c ("board: ti: am57xx-idk: Configure the CDCE913 clock
>>>> synthesizer")
>>>> Unfortunately it leads to a regression in fastboot code on BeagleBoard
>>>> X15. Basically fastboot stops to work, with a message like this:
>>>>       => fastboot 1
>>>>       No USB device found
>>>>       USB init failed: -19
>>>> I haven't investigated that as I'm busy with Android boot flow patch
>>>> series at the moment (trying to merge it before merge window closes).
>>>> Can you please investigate what is the cause and how to fix it?
>>>> Thanks!
>> This seems to be caused by usb dwc3 init failing to get clks, if
>> CONFIG_CLK is enabled. We appear to have the attached patch which fixes
>> it in TI internal u-boot tree; it fixes the issue with latest u-boot also.
>> Should this be picked for upstream also? (CC: Vignesh)
> I can confirm that that patch helps. If it's a proper fix, can you
> please send it here? Also, I guess it would be nice to have next tags
> specified: Fixes:, Reported-by:.
> Thanks!

Vignesh, any comments as you are the author of that patch? The 
background on it is somewhat unclear to me.

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