From patchwork Thu Apr 9 15:59:27 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felipe Balbi X-Patchwork-Id: 6189101 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 919FCBF4A6 for ; Thu, 9 Apr 2015 16:02:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B8CD820376 for ; Thu, 9 Apr 2015 16:02:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CCAEB202E6 for ; Thu, 9 Apr 2015 16:02:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756062AbbDIQBN (ORCPT ); Thu, 9 Apr 2015 12:01:13 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:40921 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756017AbbDIQBD (ORCPT ); Thu, 9 Apr 2015 12:01:03 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id t39G0cXm009399; Thu, 9 Apr 2015 11:00:38 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t39G0bpN002626; Thu, 9 Apr 2015 11:00:37 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Thu, 9 Apr 2015 11:00:36 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t39G0a42021555; Thu, 9 Apr 2015 11:00:36 -0500 From: Felipe Balbi To: Tony Lindgren CC: Linux OMAP Mailing List , Linux ARM Kernel Mailing List , Felipe Balbi Subject: [PATCH 2/2] arm: boot: dts: am437x-sk: reduce col-scan-delay-us Date: Thu, 9 Apr 2015 10:59:27 -0500 Message-ID: <1428595167-10050-2-git-send-email-balbi@ti.com> X-Mailer: git-send-email 2.3.0 In-Reply-To: <1428595167-10050-1-git-send-email-balbi@ti.com> References: <1428595167-10050-1-git-send-email-balbi@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The new AM437x SK Beta boards have removed the large capacitors on the gpio-matrix column lines which means we can reduce col-scan-delay-us to 5us without loosing functionality. Signed-off-by: Felipe Balbi --- arch/arm/boot/dts/am437x-sk-evm.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts index 58dc1cd58bdd..37ce7b1bf07f 100644 --- a/arch/arm/boot/dts/am437x-sk-evm.dts +++ b/arch/arm/boot/dts/am437x-sk-evm.dts @@ -49,7 +49,7 @@ pinctrl-0 = <&matrix_keypad_pins>; debounce-delay-ms = <5>; - col-scan-delay-us = <1500>; + col-scan-delay-us = <5>; row-gpios = <&gpio5 5 GPIO_ACTIVE_HIGH /* Bank5, pin5 */ &gpio5 6 GPIO_ACTIVE_HIGH>; /* Bank5, pin6 */