From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753974Ab2FTMoa (ORCPT ); Wed, 20 Jun 2012 08:44:30 -0400 Received: from hqemgate03.nvidia.com ([216.228.121.140]:14270 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752247Ab2FTMo3 convert rfc822-to-8bit (ORCPT ); Wed, 20 Jun 2012 08:44:29 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 20 Jun 2012 05:41:43 -0700 From: Bandi Krishna Chaitanya To: Laxman Dewangan , "swarren@wwwdotorg.org" , "ccross@android.com" , "olof@lixom.net" CC: "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" Date: Wed, 20 Jun 2012 18:14:24 +0530 Subject: RE: [PATCH V2] ARM: tegra: apbio access using dma for tegra20 only Thread-Topic: [PATCH V2] ARM: tegra: apbio access using dma for tegra20 only Thread-Index: Ac1O4V73841E9v/4SZq9TkVm3OCWDQAAKKbg Message-ID: <4B31D3FCDA299E46AB481AFD049E47C97D8A45C1B9@BGMAIL01.nvidia.com> References: <1340195794-26571-1-git-send-email-ldewangan@nvidia.com> In-Reply-To: <1340195794-26571-1-git-send-email-ldewangan@nvidia.com> Accept-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US MIME-Version: 1.0 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 20 June 2012 06:06 PM, Chaitanya Bandi wrote: > > The Tegra20 HW issue with accessing APBIO registers (such as fuse registers) > directly from the CPU concurrently with APB DMA accesses has been fixed in > Tegra30 and later chips. > > Access these registers directly from the CPU on Tegra30 and later, and apply > the workaround only for Tegra20. > > Signed-off-by: Laxman Dewangan > Tested-by: Chaitanya Bandi Tested on Harmony with non-dt booting and confirmed that it is using the dma based apbio access.