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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 63BD1C636C8 for ; Thu, 15 Jul 2021 18:42:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 500A261396 for ; Thu, 15 Jul 2021 18:42:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235839AbhGOSpW (ORCPT ); Thu, 15 Jul 2021 14:45:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:45336 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235232AbhGOSow (ORCPT ); Thu, 15 Jul 2021 14:44:52 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 48296613CF; Thu, 15 Jul 2021 18:41:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626374518; bh=iEXuc2D8om0atvMRk10gMHiPfJTXx2mXNvzdvpuYWCw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RQXeqqy4TUhNXTlDXINii7QN4vy4qXKZad3gay7NVnZNeEmlUxU8u4Ze30VdQ6N5Q W4ItzaX1f1/TRZYZSkIYu0KhggHyTHqBas+N2wW28BrMZXYCGZ218AcgY7nIWddlIr Ht5aRPYsjpIo2i6aBvwL6CwTvQ1nbBWEvjpCgROM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Wesley Chalmers , Dmytro Laktyushkin , Stylon Wang , Daniel Wheeler , Alex Deucher , Sasha Levin Subject: [PATCH 5.4 034/122] drm/amd/display: Set DISPCLK_MAX_ERRDET_CYCLES to 7 Date: Thu, 15 Jul 2021 20:38:01 +0200 Message-Id: <20210715182457.525197166@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210715182448.393443551@linuxfoundation.org> References: <20210715182448.393443551@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: Wesley Chalmers [ Upstream commit 3577e1678772ce3ede92af3a75b44a4b76f9b4ad ] [WHY] DISPCLK_MAX_ERRDET_CYCLES must be 7 to prevent connection loss when changing DENTIST_DISPCLK_WDIVIDER from 126 to 127 and back. Signed-off-by: Wesley Chalmers Reviewed-by: Dmytro Laktyushkin Acked-by: Stylon Wang Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index 083c42e521f5..03a2e1d7f067 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -126,7 +126,7 @@ void dcn20_dccg_init(struct dce_hwseq *hws) REG_WRITE(MILLISECOND_TIME_BASE_DIV, 0x1186a0); /* This value is dependent on the hardware pipeline delay so set once per SOC */ - REG_WRITE(DISPCLK_FREQ_CHANGE_CNTL, 0x801003c); + REG_WRITE(DISPCLK_FREQ_CHANGE_CNTL, 0xe01003c); } void dcn20_display_init(struct dc *dc) { -- 2.30.2