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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 400D3C433E9 for ; Wed, 17 Mar 2021 01:04:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12ACB64FB5 for ; Wed, 17 Mar 2021 01:04:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232865AbhCQBDm (ORCPT ); Tue, 16 Mar 2021 21:03:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:36048 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231753AbhCQA6m (ORCPT ); Tue, 16 Mar 2021 20:58:42 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A473D64FFC; Wed, 17 Mar 2021 00:58:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1615942717; bh=ycdKLRkXafHBSwEDjvdu5pheyZU7MTyYgWw4zPjDw9c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FM/UTTCR2CyrsagSmF+w7pkA0yqBsQ1qUjeu2uy46tohXvFtSRf9Y3q9ZOV9dkgsI 1yT8CkGkPV2C+0aaSGStnWdAjaV2klos9bsEtK4e7VP/y/RcuZF2mwCHH/sb1++HNS 8JvXZlj8YjhMnHMtvLUmHU/n7EhSiuiVVOBE6AsqGZFq9FTn5H89lpwgD4CpZdZeBA a+evo3XFbV46AtyC+YvSuk5ZC1yzghBGrJmgeE/f/TV+gdqcbrjVbir8gPUenjE9Vx FqdPZVhjwnX6XPxY8AvZbZTN9+VyVdliogOs787po72X4yj7pC7ZJCZvQWSIjkXCKh oD89m49U2+Hzg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sung Lee , Daniel Wheeler , Haonan Wang , Eryk Brol , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 28/37] drm/amd/display: Revert dram_clock_change_latency for DCN2.1 Date: Tue, 16 Mar 2021 20:57:53 -0400 Message-Id: <20210317005802.725825-28-sashal@kernel.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210317005802.725825-1-sashal@kernel.org> References: <20210317005802.725825-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sung Lee [ Upstream commit b0075d114c33580f5c9fa9cee8e13d06db41471b ] [WHY & HOW] Using values provided by DF for latency may cause hangs in multi display configurations. Revert change to previous value. Tested-by: Daniel Wheeler Signed-off-by: Sung Lee Reviewed-by: Haonan Wang Acked-by: Eryk Brol Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c index f63cbbee7b33..11a4c4029a90 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c @@ -257,7 +257,7 @@ struct _vcs_dpi_soc_bounding_box_st dcn2_1_soc = { .num_banks = 8, .num_chans = 4, .vmm_page_size_bytes = 4096, - .dram_clock_change_latency_us = 11.72, + .dram_clock_change_latency_us = 23.84, .return_bus_width_bytes = 64, .dispclk_dppclk_vco_speed_mhz = 3600, .xfc_bus_transport_time_us = 4, -- 2.30.1