From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CAF01C07542 for ; Mon, 27 May 2019 10:26:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A28642133F for ; Mon, 27 May 2019 10:26:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="QjMR7B6E"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="QjMR7B6E" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726304AbfE0K02 (ORCPT ); Mon, 27 May 2019 06:26:28 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:38746 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725814AbfE0K02 (ORCPT ); Mon, 27 May 2019 06:26:28 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id AF0FF6087D; Mon, 27 May 2019 10:26:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1558952787; bh=XSljrn9KDqKTIUNGpy8kHPqFJpqJPYruTEJmjtqHBIs=; h=From:To:Cc:Subject:Date:From; b=QjMR7B6ErfMHcKJ+RIA67MABL5bx97vFiabqkj0HiG+mdP5TapL3QfuWvnDZXDVrI 0rfHG8LPocC75zAltZaZrzOfOUebB35/PSxoenQpAGJ5iyGFE7G/FVVCOPEcF+89n1 4z7JYbpOt2qWg2k5unJo8XjQyr0aOCpf233W7eMU= Received: from blr-ubuntu-41.ap.qualcomm.com (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vivek.gautam@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id ACFFC60252; Mon, 27 May 2019 10:26:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1558952787; bh=XSljrn9KDqKTIUNGpy8kHPqFJpqJPYruTEJmjtqHBIs=; h=From:To:Cc:Subject:Date:From; b=QjMR7B6ErfMHcKJ+RIA67MABL5bx97vFiabqkj0HiG+mdP5TapL3QfuWvnDZXDVrI 0rfHG8LPocC75zAltZaZrzOfOUebB35/PSxoenQpAGJ5iyGFE7G/FVVCOPEcF+89n1 4z7JYbpOt2qWg2k5unJo8XjQyr0aOCpf233W7eMU= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org ACFFC60252 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=vivek.gautam@codeaurora.org From: Vivek Gautam To: airlied@linux.ie, thierry.reding@gmail.com, daniel@ffwll.ch, dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, robdclark@gmail.com, linux-arm-msm@vger.kernel.org, bjorn.andersson@linaro.org, Vivek Gautam Subject: [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio Date: Mon, 27 May 2019 15:56:16 +0530 Message-Id: <20190527102616.28315-1-vivek.gautam@codeaurora.org> X-Mailer: git-send-email 2.16.1.72.g5be1f00a9a70 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org MTP SDM845 panel seems to need additional delay to bring panel to a workable state. Running modetest without this change displays blurry artifacts. Signed-off-by: Vivek Gautam --- drivers/gpu/drm/panel/panel-truly-nt35597.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/panel/panel-truly-nt35597.c b/drivers/gpu/drm/panel/panel-truly-nt35597.c index fc2a66c53db4..aa7153fd3be4 100644 --- a/drivers/gpu/drm/panel/panel-truly-nt35597.c +++ b/drivers/gpu/drm/panel/panel-truly-nt35597.c @@ -280,6 +280,7 @@ static int truly_35597_power_on(struct truly_nt35597 *ctx) gpiod_set_value(ctx->reset_gpio, 1); usleep_range(10000, 20000); gpiod_set_value(ctx->reset_gpio, 0); + usleep_range(10000, 20000); return 0; } -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation