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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B3E4C7EE23 for ; Mon, 15 May 2023 17:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243853AbjEOROZ (ORCPT ); Mon, 15 May 2023 13:14:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243653AbjEOROK (ORCPT ); Mon, 15 May 2023 13:14:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF0A3100DE for ; Mon, 15 May 2023 10:12:27 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 24FDF62B83 for ; Mon, 15 May 2023 17:12:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD9B4C433EF; Mon, 15 May 2023 17:12:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684170746; bh=TWL+qJQugE93zVVjjl/DucUP3g1jjUx+LRRUZuSZzDg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Wwwi80CWxehsdAWcuVEsCDCvxL6xAg+1jOrTxfCSW8/sbjWnLFwonZFZ6nms3hoip EXaRFpgCwwsOppAdlJ6kaYhstqK8AzuGQ962UHUc6yJY9GNs1fnnQT1yMycdgFhI9f 27ikXe8PgkbbWIS95pGFmEK/otCDWRlwLieZeN4A= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nicholas Kazlauskas , Mario Limonciello , Alex Deucher , Alan Liu , Leo Chen , Sasha Levin Subject: [PATCH 6.1 211/239] drm/amd/display: Change default Z8 watermark values Date: Mon, 15 May 2023 18:27:54 +0200 Message-Id: <20230515161728.057662301@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161721.545370111@linuxfoundation.org> References: <20230515161721.545370111@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Leo Chen [ Upstream commit 8f586cc16c1fc3c2202c9d54563db8c7ed365f82 ] [Why & How] Previous Z8 watermark values were causing flickering and OTC underflow. Updating Z8 watermark values based on the measurement. Reviewed-by: Nicholas Kazlauskas Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Acked-by: Alan Liu Signed-off-by: Leo Chen Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c index 2c99193b63fa6..4f91e64754239 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c @@ -148,8 +148,8 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_14_soc = { .num_states = 5, .sr_exit_time_us = 16.5, .sr_enter_plus_exit_time_us = 18.5, - .sr_exit_z8_time_us = 210.0, - .sr_enter_plus_exit_z8_time_us = 310.0, + .sr_exit_z8_time_us = 268.0, + .sr_enter_plus_exit_z8_time_us = 393.0, .writeback_latency_us = 12.0, .dram_channel_width_bytes = 4, .round_trip_ping_latency_dcfclk_cycles = 106, -- 2.39.2