Hi Simon, On Monday, 15 January 2018 08:57:48 EET Simon Horman wrote: > On Fri, Jan 12, 2018 at 03:48:25PM +0200, Laurent Pinchart wrote: > > On Friday, 12 January 2018 11:47:03 EET Geert Uytterhoeven wrote: > >> On Fri, Jan 12, 2018 at 1:58 AM, Laurent Pinchart wrote: > >>> This patch series addresses a design mistake that dates back from the > >>> initial DU support. Support for the LVDS encoders, which are IP cores > >>> separate from the DU, was bundled in the DU driver. Worse, both the DU > >>> and LVDS were described through a single DT node. > >>> > >>> To fix the, patches 01/10 and 02/10 define new DT bindings for the > >>> LVDS encoders, and deprecate their description inside the DU bindings. > >>> To retain backward compatibility with existing DT, patch 03/10 then > >>> patches the device tree at runtime to convert the legacy bindings to the > >>> new ones. > >> > >> Looks like we will have to postpone the R-Car Gen2 Modern DT flag day > >> again by a few kernel releases? > > > > Why so ? We don't have to drop support for all legacy DT bindings at the > > same time, do we ? We can switch to the new-style clock bindings on Gen2 > > already, and drop the legacy LVDS bindings later. > > To clarify, after this patchset. > * Old DTs work with old and new kernels. > * New DTs require new kernels.
That's correct. I've tested old DTs with new kernels successfully on Lager, Salvator-X (both H3 ES1.x and M3-W) and Salvator-XS. -- Regards, Laurent Pinchart
