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 A418EC001DC for ; Fri, 21 Jul 2023 16:25:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232942AbjGUQZZ (ORCPT ); Fri, 21 Jul 2023 12:25:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51988 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232860AbjGUQZG (ORCPT ); Fri, 21 Jul 2023 12:25:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 79AE4468E for ; Fri, 21 Jul 2023 09:21:47 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1F73E61D3F for ; Fri, 21 Jul 2023 16:21:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00D53C433C8; Fri, 21 Jul 2023 16:21:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689956469; bh=Gu9JRkyO3CH/znm+Oxqwe4zKVHI9th69RPU90yDZKM4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JykWj4Qe82b7XIJIHiCNrXNN/2MOUcA/qd8Anoi3onfDM6ZnSykEPiS3cN5glNAQa CoS8tHQ4BhZrZjKdV36twgt3o4ibvDHPjMxSsEaegyNaCLndbZqQeuWXyOT7P6pkjN sXdepDhokPHCFJd2A3JIuvhPvXdQvMfysHjY0sMI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sean Wang , Marc Rossi , Hamza Mahfooz , "Tsung-hua (Ryan) Lin" , Mario Limonciello , Hamza Mahfooz , Alex Deucher Subject: [PATCH 6.4 204/292] drm/amd: Disable PSR-SU on Parade 0803 TCON Date: Fri, 21 Jul 2023 18:05:13 +0200 Message-ID: <20230721160537.644427371@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230721160528.800311148@linuxfoundation.org> References: <20230721160528.800311148@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: Mario Limonciello commit 072030b1783056b5de8b0fac5303a5e9dbc6cfde upstream. A number of users have reported that there are random hangs occurring caused by PSR-SU specifically on panels that contain the parade 0803 TCON. Users have been able to work around the issue by disabling PSR entirely. To avoid these hangs, disable PSR-SU when this TCON is found. Cc: stable@vger.kernel.org Cc: Sean Wang Cc: Marc Rossi Cc: Hamza Mahfooz Suggested-by: Tsung-hua (Ryan) Lin Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2443 Signed-off-by: Mario Limonciello Reviewed-by: Hamza Mahfooz Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/modules/power/power_helpers.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c +++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c @@ -818,6 +818,8 @@ bool is_psr_su_specific_panel(struct dc_ ((dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x08) || (dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x07))) isPSRSUSupported = false; + else if (dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x03) + isPSRSUSupported = false; else if (dpcd_caps->psr_info.force_psrsu_cap == 0x1) isPSRSUSupported = true; }