Hi Vladimir, On 07/01/17 23:32, Vladimir Zapolskiy wrote: > On 01/02/2017 04:22 PM, Russell King - ARM Linux wrote: >> On Fri, Dec 30, 2016 at 09:23:59AM +0100, Linus Walleij wrote: >>> On Wed, Dec 21, 2016 at 4:27 AM, Vladimir Zapolskiy <vz@xxxxxxxxx> wrote: >>> >>>> The changeset contains a number of cleanups, changed semantics of >>>> init_panel() callback, which allows to simplify getting of panel >>>> properties from panel device tree node, and a handling of optional >>>> "enable-gpios" panel property, the latter is described in >>>> display/panel/panel-dpi.txt device tree binding documentation, but >>>> it has been unsupported by the ARM CLCD driver. >>>> >>>> Vladimir Zapolskiy (4): >>>> video: ARM CLCD: sort included headers out alphabetically >>>> video: ARM CLCD: use panel device node for panel initialization >>>> video: ARM CLCD: use panel device node for getting backlight and mode >>>> video: ARM CLCD: add support of an optional GPIO to enable panel >>> >>> As you may have seen Tomi has stepped down as FBDEV maintainer and >>> this subsystem is now orphaned. >>> >>> I guess Andrew Morton merges patches for it in this case, he usually does. >>> >>> But what we should actually do is create a new DRM driver for CLCD >>> in drivers/gpu/drm/arm/clcd* >>> >>> It's maybe not a small undertaking :( >>> >>> But in case you're interested in the job, I will pitch in and test the result >>> on all ARM reference designs plus Nomadik. >> >> A DRM driver for it would probably be a good idea, but dealing with all >> the weird and wonderful connection arrangements may not be that easy... >> > > Linus, Russell, > > I've immediately encountered a problem while porting the driver to DRM, > because LPC18xx/LPC43xx SoCs are powered by Cortex-M3/M4 cores and DRM > framework has build and runtime dependencies on MMU. +Benjamin In another thread Benjamin pointed at patch [1] in drm/kms part for noMMU. [1] https://cgit.freedesktop.org/drm/drm-misc/commit/?id=62a0d98a188cc4ebd8ea54b37d274ec20465e464 Cheers Vladimir > > That said, in short term I would expect a continuation of support for > the legacy CLCD framebuffer driver, which works fine on MMU-less SoCs. > > -- > With best wishes, > Vladimir > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
