From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751191AbdCQXKD (ORCPT ); Fri, 17 Mar 2017 19:10:03 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:48324 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751072AbdCQXKC (ORCPT ); Fri, 17 Mar 2017 19:10:02 -0400 Date: Fri, 17 Mar 2017 23:09:49 +0000 From: Russell King - ARM Linux To: Eric Anholt Cc: dri-devel@lists.freedesktop.org, tom.cooksey@arm.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] drm/pl111: Initial drm/kms driver for pl111 Message-ID: <20170317230949.GK21222@n2100.armlinux.org.uk> References: <20170317224742.17219-1-eric@anholt.net> <20170317224742.17219-3-eric@anholt.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170317224742.17219-3-eric@anholt.net> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 17, 2017 at 03:47:42PM -0700, Eric Anholt wrote: > This is a modesetting driver for the pl111 CLCD display controller > found on various ARM platforms such as the Versatile Express. The > driver has only been tested on the bcm911360_entphn platform so far, > with PRIME-based buffer sharing between vc4 and clcd. > > It reuses the existing devicetree binding, while not using quite as > many of its properties as the fbdev driver does (those are left for > future work). As we're multiplatform on ARM, and this is using the PL11x AMBA IDs, we must ensure that it's compatible with everything that the fbdev driver is compatible with... however, I suspect that's not worth the effort (unless Linus W wants it?) If we make it PL111 specific, then we don't need to handle Integrator CP, or the Versatile PB/AB weirdness. The only thing left is the power etc enable bits on Realview which uses the PL111. See the code for Realview in drivers/video/fbdev/amba-clcd-versatile.c. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.