On Fri, Oct 19, 2018 at 09:12:43AM +0200, Uwe Kleine-König wrote: > Hello Oleksij, > > On Thu, Oct 18, 2018 at 01:26:14PM +0200, Oleksij Rempel wrote: > > The DMA support for I2C was introduced on i.MX50. So, > > avoid of DMA probing on not supported versions. > > What is the obvious downside of trying to use DMA on i.MX21? If the > purpose is just to suppress the message > > can't request DMA tx channel > > , that goes away with patch 3, too. > > Note that if we agree that i.MX50 (and later) isn't compatible to > i.MX21, all device trees should be fixed accordingly. IMHO the > difference "There is a DMA engine connected only on some > implementations" doesn't give enough incentive to claim that i.MX21 and > i.MX50 must not share the compatible. I don't see any sense to do allocation and add extra probes just to find what we already know from compatible. -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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