From patchwork Tue Mar 5 12:04:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Hogander, Jouni" X-Patchwork-Id: 13582281 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D5D78C54E41 for ; Tue, 5 Mar 2024 12:05:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 390A2112A71; Tue, 5 Mar 2024 12:05:26 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="mVnTCfWZ"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5534A112A71 for ; Tue, 5 Mar 2024 12:05:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709640325; x=1741176325; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=r+7p0ADbEZ9NN5zHCBuEgDY40v739QalCbReUyg16lM=; b=mVnTCfWZrU3fZ5TonL7YWrn3OOa7K7xH8NBDPmPbfIIGqTHDiUC1yOXe xoKkYxAo6tFHFmMXFhlzEJjLTGZocFQQi00bkPmyW6OzM1i8o61h6Hr9L uD2nYJAuZ/KJeIFBwUAUKGor+W0F5U3QkD/ptEX7nzzIY4GUg+dQjovOt hnzAoof3M6gJs9SJrd/SMM4TKRV0wp7AoiRq5TGj1V1AffPm795ZHLu9V slZoVCGX8R70HUXeaHwtiMCPvFzCc0YrnKxReYvo/3H1efuWmct3wqbvc SKEd2UxzPjRRYqqav87LlvjBRyMBZwdMrxGw3Serj3fc91ECQLRqtRAD6 g==; X-IronPort-AV: E=McAfee;i="6600,9927,11003"; a="7132106" X-IronPort-AV: E=Sophos;i="6.06,205,1705392000"; d="scan'208";a="7132106" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Mar 2024 04:05:25 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,205,1705392000"; d="scan'208";a="9417810" Received: from snasibli-mobl2.ccr.corp.intel.com (HELO jhogande-mobl1.intel.com) ([10.252.33.194]) by orviesa009-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Mar 2024 04:05:23 -0800 From: =?utf-8?q?Jouni_H=C3=B6gander?= To: intel-gfx@lists.freedesktop.org Cc: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= , Jani Nikula , =?utf-8?q?Jouni_H=C3=B6gander?= Subject: [PATCH v3 5/5] drm/i915/display: Increase number of fast wake precharge pulses Date: Tue, 5 Mar 2024 14:04:58 +0200 Message-Id: <20240305120458.1275218-6-jouni.hogander@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240305120458.1275218-1-jouni.hogander@intel.com> References: <20240305120458.1275218-1-jouni.hogander@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Increasing number of fast wake sync pulses seem to fix problems with certain PSR panels. This should be ok for other panels as well as the eDP specification allows 10...16 precharge pulses and we are still within that range. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/9739 Signed-off-by: Jouni Högander --- drivers/gpu/drm/i915/display/intel_dp_aux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux.c b/drivers/gpu/drm/i915/display/intel_dp_aux.c index 7e69be100d90..5dff1bc85d61 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_aux.c +++ b/drivers/gpu/drm/i915/display/intel_dp_aux.c @@ -145,7 +145,7 @@ static int intel_dp_aux_sync_len(void) int intel_dp_aux_fw_sync_len(void) { - int precharge = 10; /* 10-16 */ + int precharge = 12; /* 10-16 */ int preamble = 8; return precharge + preamble;