Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753102AbdFUQgd (ORCPT ); Wed, 21 Jun 2017 12:36:33 -0400 Received: from mail-eopbgr10110.outbound.protection.outlook.com ([40.107.1.110]:53411 "EHLO EUR02-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753062AbdFUQga (ORCPT ); Wed, 21 Jun 2017 12:36:30 -0400 Authentication-Results: lists.freedesktop.org; dkim=none (message not signed) header.d=none;lists.freedesktop.org; dmarc=none action=none header.from=axentia.se; Subject: Re: [PATCH] drm: atmel-hlcdc: sama5d4 does not have overlay2 To: Nicolas Ferre , Boris Brezillon , Peter Rosin Cc: linux-kernel@vger.kernel.org, David Airlie , dri-devel@lists.freedesktop.org References: <1497518653-2788-1-git-send-email-peda@lysator.liu.se> <20170615113748.1c98f898@bbrezillon> <08a95adb-90af-1439-73be-4f992d433d1d@axentia.se> <9d3e6692-010a-fceb-5dfb-b79bc102eeda@microchip.com> From: Peter Rosin 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X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0202MB2552 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1431 Lines: 47 On 2017-06-21 17:14, Nicolas Ferre wrote: > On 16/06/2017 at 00:40, Peter Rosin wrote: >> On 2017-06-15 11:37, Boris Brezillon wrote: >>> On Thu, 15 Jun 2017 11:24:13 +0200 >>> Peter Rosin wrote: >>> >>>> From: Peter Rosin >>>> >>>> Remove the layer. >>> >>> Duh. It was present in the datasheet I had. Just downloaded last >>> version of the datasheet and it's no longer there. >> >> Heh. >> >>> Nicolas, there's still a reference to OVR2 in the block diagram >>> (Section "31.3 Block Diagram"), can ask fix that (or ask someone who >>> can). >> >> Also, on page 2 (the Features chapter under peripherals) there's: >> >> "LCD TFT Controller with 4 overlays..." >> >> I think it should be three? > > Hi Peter and Boris, > > After checking with the designers here, it seems that it's an issue with > the latest datasheet. This is why Boris implemented it some time ago. > > So, the conclusion is: the OVR2 was removed from latest sama5d4 > documentation by mistake. It will be corrected in next datasheet release. > The OVR2 exists and works correctly on sama5d4. > > So, please don't remove this layer ;-) Right :-) I assume the CLUT offset for overlay 2 is at 0xe00, just as it is for sama5d3? When I know for sure, I can send a v5 of the other patch. > Peter, thanks a lot for your work with supporting the CLUT feature! I needed to get rid of some memory load... Cheers, peda