From mboxrd@z Thu Jan 1 00:00:00 1970 From: s.hauer@pengutronix.de (Sascha Hauer) Date: Thu, 24 Oct 2013 09:28:11 +0200 Subject: ARM topic: Is DT on ARM the solution, or is there something better? In-Reply-To: References: <52644A9E.3060007@wwwdotorg.org> <20131020231134.GR25034@n2100.arm.linux.org.uk> <20131021083242.GB30088@pengutronix.de> <20131021084854.GV25034@n2100.arm.linux.org.uk> <20131021092730.GF30088@pengutronix.de> Message-ID: <20131024072811.GS30088@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Oct 23, 2013 at 09:14:17PM -0400, Rob Clark wrote: > On Mon, Oct 21, 2013 at 5:27 AM, Sascha Hauer wrote: > >> If a subsystem doesn't work well with DT, then the choices are either: > >> > >> (a) don't use DT with the subsystem > > > > The underlying problem has nothing to do with DT. Multi component > > hardware does exist and won't vanish when we stop using DT. > > > >> (b) fix the subsystem > > > > I'd love to do that. Step one to this seems to be to increase the > > awareness that there's something wrong with DRM. > > > Note that I suspect your idea of "fixing drm" is going to break some > userspace assumptions about the hw (ie. userspace isn't expecting > crtcs/encoders/connectors to suddenly appear/disappear. And the funny > thing is, on all of this hw, that isn't going to happen anyways. I was talking about all SoC DRM drivers implementing variants of the same glue between drm and the multidevice nature of the components. To make that sure: I never had the intention to implement hotplug for drm. Also what the imx-drm driver does is not for hotplug, but only for binding different components together. Sascha -- 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 |