Re: [RFC 13/17] OMAPDSS: SDI: Create a function to set timings

Archit Taneja
2012-08-08T06:00:33Z

On Tuesday 07 August 2012 07:50 PM, Tomi Valkeinen wrote:
> On Wed, 2012-08-01 at 16:01 +0530, Archit Taneja wrote:
>> Create function omapdss_sdi_set_timings(), this can be used by a SDI panel
>> driver without disabling/enabling the SDI interface. This is similar to the
>> set_timings op of the DPI interface driver. It calls sdi_set_mode() which only
>> configures the DISPC timings and DSS/DISPC clock dividers.
>
> I don't think this works, as the SDI PLL uses pclk-free, and if pclk
> changes, PLL lock probably breaks.
>
> OMAP3430 TRM explains the sequence how to configure settings on the fly,
> but that's not very simple. Just turning the output off and on is much
> easier.

Right, I'll make set_timings() just disable and enable SDI like before.

Archit