From patchwork Thu Feb 26 12:48:56 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 5891741 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id EA2579F269 for ; Thu, 26 Feb 2015 12:49:40 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 362A820390 for ; Thu, 26 Feb 2015 12:49:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5815820398 for ; Thu, 26 Feb 2015 12:49:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932166AbbBZMtg (ORCPT ); Thu, 26 Feb 2015 07:49:36 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:60613 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932105AbbBZMtf (ORCPT ); Thu, 26 Feb 2015 07:49:35 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id t1QCnYQs019284; Thu, 26 Feb 2015 06:49:34 -0600 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t1QCnX1d030346; Thu, 26 Feb 2015 06:49:33 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.3.224.2; Thu, 26 Feb 2015 06:49:33 -0600 Received: from deskari.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t1QCnUhJ030427; Thu, 26 Feb 2015 06:49:32 -0600 From: Tomi Valkeinen To: , CC: Tomi Valkeinen Subject: [PATCH 02/15] OMAPDSS: HDMI5: Increase DDC SDA-HOLD time Date: Thu, 26 Feb 2015 14:48:56 +0200 Message-ID: <1424954949-12801-2-git-send-email-tomi.valkeinen@ti.com> X-Mailer: git-send-email 2.3.0 In-Reply-To: <1424954949-12801-1-git-send-email-tomi.valkeinen@ti.com> References: <1424954949-12801-1-git-send-email-tomi.valkeinen@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 It has been observed that the current SDA-HOLD time is too short for some board/cable/monitor combinations. Increase the SDA-HOLD time to 1000ns. Signed-off-by: Tomi Valkeinen --- drivers/video/fbdev/omap2/dss/hdmi5_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/omap2/dss/hdmi5_core.c b/drivers/video/fbdev/omap2/dss/hdmi5_core.c index a3cfe3d708f7..bfc0c4c297d6 100644 --- a/drivers/video/fbdev/omap2/dss/hdmi5_core.c +++ b/drivers/video/fbdev/omap2/dss/hdmi5_core.c @@ -55,7 +55,7 @@ static void hdmi_core_ddc_init(struct hdmi_core_data *core) const unsigned ss_scl_low = 4700; /* ns */ const unsigned fs_scl_high = 600; /* ns */ const unsigned fs_scl_low = 1300; /* ns */ - const unsigned sda_hold = 300; /* ns */ + const unsigned sda_hold = 1000; /* ns */ const unsigned sfr_div = 10; unsigned long long sfr; unsigned v;