Re: [PATCHv2 2/2] OMAP: add omap_device_reset()

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On Sun, 2011-05-29 at 20:15 -0600, Paul Walmsley wrote:
> On Fri, 27 May 2011, Tomi Valkeinen wrote:
> 
> > However, VENC doesn't use the standard syscontrol mechanism, so that 
> > cannot be done via omap_device interface anyway.
> 
> struct omap_hwmod_class has a .reset function pointer for this purpose.  
> It's already been necessary to deal with the I2C IP block:
> 
>    https://patchwork.kernel.org/patch/804072/
> 
> If all that's needed are the steps in 4430 TRM Rev. T Section 10.6.5.1.2.3 
> "Subsequence--Video Encoder Software Reset", then it should be possible to 
> handle this internal reset with hwmod code.

Yes, that should be enough. However, the VENC_F_CONTROL register also
contains bits that need to be programmed by the driver. I hope that
doesn't cause any problems. Probably not, as hwmod code should use that
register only at reset time.

 Tomi


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