Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964830Ab2KNP3o (ORCPT ); Wed, 14 Nov 2012 10:29:44 -0500 Received: from hqemgate03.nvidia.com ([216.228.121.140]:8588 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932736Ab2KNP3n (ORCPT ); Wed, 14 Nov 2012 10:29:43 -0500 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 14 Nov 2012 07:29:37 -0800 Message-ID: <50A3B8DD.7010607@nvidia.com> Date: Wed, 14 Nov 2012 17:29:33 +0200 From: =?UTF-8?B?VGVyamUgQmVyZ3N0csO2bQ==?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121028 Thunderbird/16.0.2 MIME-Version: 1.0 To: Thierry Reding CC: Stephen Warren , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 1/2] ARM: tegra: Add Tegra20 host1x support References: <1352467202-27903-1-git-send-email-thierry.reding@avionic-design.de> <1352467202-27903-2-git-send-email-thierry.reding@avionic-design.de> <50A357D3.9080002@nvidia.com> <20121114150125.GA11050@avionic-0098.mockup.avionic-design.de> In-Reply-To: <20121114150125.GA11050@avionic-0098.mockup.avionic-design.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1315 Lines: 28 On 14.11.2012 17:01, Thierry Reding wrote: > Funny. I just tested with this line removed and I also get the freeze. > With the line I don't get the freeze. Does the freeze only occur with > additional patches on top? If so I think we should keep the line in for > now because it is what most people have tested against and which has > proven to work. We can fix any remaining issues with host1x specific > things when actual patches emerge. I was running with 2D acceleration support added on top of your gitorious tree. It was the nvhost driver, which probes host1x, and initializes it. In middle of initialization (writing zeros to sync point registers), host1x stops responding. I agree, if removing the line causes regression, keep it and let's debug this issue later. It might be that we have a difference in bootloader. Does your bootloader enable display? U-Boot and fastboot do, and it might be that has an effect. They would need to initialize host1x clocks, and it might be that kernel initialization somehow clashes with bootloader's. Best regards, Terje -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/