[PATCH 0/2 v2] S3C64XX: Fix 48M clock enable

Marek Szyprowski m.szyprowski at samsung.com
Tue Oct 12 08:55:22 EDT 2010


On Tuesday, October 12, 2010 2:41 PM Paulius Zaleckas wrote:

> To enable 48M clock USB PHY must be initialized since 48M
> is output of USB PHY PLL.
> So fix a problem where other devices requiring 48M clock will
> not work unless USB OTG driver is enabled.
> is_osc was removed from OTG drivers platform data and implemented
> as separate function s3c6400_clk_xusbxti_is_osc which should be
> called from machine_init. Currently there is no in-kernel users
> of it.
> This fix is only for S3C64xx family, but I am sure something
> similar will be needed for S5P family. I have started the work
> but I am unable to finnish it since I only have datasheet for
> S5PC100. Maybe Samsung guys could help me with this..?
> However current patches doesn't break S5P since it is not
> using s3c-hsotg driver (yet?).

There are patches that enables the driver on S5PC110/S5PV210 series
on kgene/for-next tree. Please note that at least Samsung Goni and
Samsung Aquila uses external oscillator to supply usb clock. Please
refer to:


Best regards
Marek Szyprowski
Samsung Poland R&D Center

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