Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754366AbcDNMCO (ORCPT ); Thu, 14 Apr 2016 08:02:14 -0400 Received: from mail-oi0-f45.google.com ([209.85.218.45]:36670 "EHLO mail-oi0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754268AbcDNMCN (ORCPT ); Thu, 14 Apr 2016 08:02:13 -0400 MIME-Version: 1.0 In-Reply-To: <1460065028-26169-1-git-send-email-rklein@nvidia.com> References: <1460065028-26169-1-git-send-email-rklein@nvidia.com> Date: Thu, 14 Apr 2016 14:02:12 +0200 Message-ID: Subject: Re: [PATCH] pinctrl: tegra: clear park bit for all pins From: Linus Walleij To: Rhyland Klein Cc: Stephen Warren , Thierry Reding , Alexandre Courbot , "linux-gpio@vger.kernel.org" , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 651 Lines: 21 On Thu, Apr 7, 2016 at 11:37 PM, Rhyland Klein wrote: > Parking bits might not be cleared by the bootloader properly (if for > instance it doesn't use the device configured by that pin). Clear > the park bits for all the pins during pinctrl probe. > > This is present on T210 platforms but not earlier ones, so for earlier > generations, set parked_reg = -1 to disable. > > The park bit is used to prevent glitching when reprogramming pinctrl > registers. > > Based on work by: > Shravani Dingari > > Signed-off-by: Rhyland Klein Patch applied with Stephen's ACK. Yours, Linus Walleij