On Tue 9 October 2012 12:34:48 Sylwester Nawrocki wrote: > Hi Guennadi, > > On 10/08/2012 11:40 AM, Guennadi Liakhovetski wrote: > > On Fri, 5 Oct 2012, Sylwester Nawrocki wrote: > >> I would really like to see more than one user until we add any core code. > >> No that it couldn't be changed afterwards, but it would be nice to ensure > >> the concepts are right and proven in real life. > > > > Unfortunately I don't have any more systems on which I could easily enough > > try this. I've got a beagleboard with a camera, but I don't think I'm a > > particularly good candidate for implementing DT support for OMAP3 camera > > drivers;-) Apart from that I've only got soc-camera based systems, of > > which none are _really_ DT-ready... At best I could try an i.MX31 based > > board, but that doesn't have a very well developed .dts and that would be > > soc-camera too anyway. > > I certainly wouldn't expect you would do all the job. I mean it would be good > to possibly have some other developers adding device tree support based on that > new bindings and new infrastructure related to them. > > There have been recently some progress in device tree support for Exynos SoCs, > including common clock framework support and we hope to add FDT support to the > Samsung SoC camera devices during this kernel cycle, based on the newly designed > media bindings. This is going to be a second attempt, after our initial RFC from > May [1]. It would still be SoC specific implementation, but not soc-camera based. > > I wasn't a big fan of this asynchronous sub-devices probing, but it now seems > to be a most complete solution to me. I think it just need to be done right > at the v4l2-core so individual drivers don't get complicated too much. After investigating this some more I think I agree with that. There are some things where we should probably ask for advice from the i2c subsystem devs, I'm thinking of putting the driver back into the deferred-probe state in particular. Creating v4l2-core support for this is crucial as it is quite complex and without core support this is going to be a nightmare for drivers. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
