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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 1DBE8C433E0 for ; Tue, 26 Jan 2021 09:42:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2ADA224D1 for ; Tue, 26 Jan 2021 09:42:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391437AbhAZJkt (ORCPT ); Tue, 26 Jan 2021 04:40:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:36954 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730985AbhAYSvJ (ORCPT ); Mon, 25 Jan 2021 13:51:09 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id B2B2A224D4; Mon, 25 Jan 2021 18:50:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1611600637; bh=NSbp94STs1o2eYrzXFBDrkVHII/I0VEPC/C+cdZ6qPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=b3wSIn1RcTbQlY770lhzxIb5ChwTdG583hTqFOpwBixoShEBZBfx+hgrcOgWV875/ BJORXhUboaxdldrF4atFNeKdSv/XRZ7t0/BebQv0T1PXXK51OhfLkUuK71HbhMI0+9 rArdIJEt797mlu+tv9vnKqW9M2SttGxSeJ54/sBo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Daniel Wheeler , Hersen Wu , Roman Li , Alex Deucher , Sasha Levin Subject: [PATCH 5.10 062/199] drm/amd/display: disable dcn10 pipe split by default Date: Mon, 25 Jan 2021 19:38:04 +0100 Message-Id: <20210125183218.894088686@linuxfoundation.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210125183216.245315437@linuxfoundation.org> References: <20210125183216.245315437@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Li, Roman [ Upstream commit 9d03bb102028b4a3f4a64d6069b219e2e1c1f306 ] [Why] The initial purpose of dcn10 pipe split is to support some high bandwidth mode which requires dispclk greater than max dispclk. By initial bring up power measurement data, it showed power consumption is less with pipe split for dcn block. This could be reason for enable pipe split by default. By battery life measurement of some Chromebooks, result shows battery life is longer with pipe split disabled. [How] Disable pipe split by default. Pipe split could be still enabled when required dispclk is greater than max dispclk. Tested-by: Daniel Wheeler Signed-off-by: Hersen Wu Signed-off-by: Roman Li Reviewed-by: Roman Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c index 462d3d981ea5e..0a01be38ee1b8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c @@ -608,8 +608,8 @@ static const struct dc_debug_options debug_defaults_drv = { .disable_pplib_clock_request = false, .disable_pplib_wm_range = false, .pplib_wm_report_mode = WM_REPORT_DEFAULT, - .pipe_split_policy = MPC_SPLIT_DYNAMIC, - .force_single_disp_pipe_split = true, + .pipe_split_policy = MPC_SPLIT_AVOID, + .force_single_disp_pipe_split = false, .disable_dcc = DCC_ENABLE, .voltage_align_fclk = true, .disable_stereo_support = true, -- 2.27.0