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 A141DC43142 for ; Wed, 17 Mar 2021 01:00:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EA4064F97 for ; Wed, 17 Mar 2021 01:00:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232504AbhCQBAW (ORCPT ); Tue, 16 Mar 2021 21:00:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:37260 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231420AbhCQA5s (ORCPT ); Tue, 16 Mar 2021 20:57:48 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1BD7C64F9B; Wed, 17 Mar 2021 00:57:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1615942663; bh=Vnr7MAJTIlC5HrBZBnBkc8Elfqq+p/iixIUF9T1HFtM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RFWVjSZ93BRpW/e1CqDdvUbwHO+tQ8EHzO/e5O7LBDDBxLf0ElaNq3ZnUznc2wfaP WCgI+bz3kN6zXOfIJAVOj8mnY7bU4/63Ab5u74MhrTZUh8TcchBp2fzFqI69by6F8l HtItuoctyLwmaei9BzmyXRfKpIHWaVEGMLF161ywnulJP5DgUNhegye97r+ctmTIHG KZ6SKDrdXCSAXlOunvHjafxxRjYXPLysX5CQZ5IMw/aN5bhSYoPAEIkI6g1AZfyBod 55UKmJpO9py1ZQ46rC9TRcSZoOXPRb2pZFz0y52jp70t2vJCrRdN6Fyz2XN0of7Om1 Rk33I1so7i9nQ== 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 5.10 40/54] drm/amd/display: Revert dram_clock_change_latency for DCN2.1 Date: Tue, 16 Mar 2021 20:56:39 -0400 Message-Id: <20210317005654.724862-40-sashal@kernel.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210317005654.724862-1-sashal@kernel.org> References: <20210317005654.724862-1-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 4e2dcf259428..b2b1e3664f28 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c @@ -295,7 +295,7 @@ 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