From patchwork Mon Sep 5 08:42:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Ma X-Patchwork-Id: 1674173 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=canonical.com header.i=@canonical.com header.a=rsa-sha256 header.s=20210705 header.b=C0baxZuk; dkim-atps=neutral Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4MLhqj5PTxz1yht for ; Mon, 5 Sep 2022 18:43:13 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1oV7hE-0006An-CX; Mon, 05 Sep 2022 08:43:08 +0000 Received: from smtp-relay-canonical-0.internal ([10.131.114.83] helo=smtp-relay-canonical-0.canonical.com) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1oV7hC-0006AH-Rj for kernel-team@lists.ubuntu.com; Mon, 05 Sep 2022 08:43:06 +0000 Received: from localhost.localdomain (unknown [222.129.34.149]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-0.canonical.com (Postfix) with ESMTPSA id 165714095C for ; Mon, 5 Sep 2022 08:43:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1662367386; bh=hcofVTJD6EfoABlKAm2SLX83aaYXFyigCbL8AiNyn7A=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=C0baxZuk6F9puhJ/ct8Vuwqn8jXSIPC0rbRsIGbT4kOwcLJRyaRMFdkbpOr082LUk 2zGalQRaZ0dPK9rDMEUndL3VvgzPXRKQuNwCHbdhIKC13BXViMLpXSIiCjLzZPzw+m C7I3UQtCDrRY3eQ/zWkFoQFUvJuTtVPvPd89II3xWVJhoJ/WeD8UJp1FzK4qEI17ze 320yfJDpiX/9bL6c3woJEavjJMNmRT+EtrZWzdX18qWBTVUVH2v3CpJTEUblvLA/8Q G9/w8B1YdnA5ydtU5fHioOWbZsurrX3OUH8gqF4sjdvpiX7thrfMR1jDshDBlY+ZWD ol0ZTHcj5lcBw== From: Aaron Ma To: kernel-team@lists.ubuntu.com Subject: [SRU][OEM-5.17][PATCH 0/1] Fix output issue of USB-C to DP dongle on AMD Date: Mon, 5 Sep 2022 16:42:48 +0800 Message-Id: <20220905084249.1463807-1-aaron.ma@canonical.com> X-Mailer: git-send-email 2.37.1 MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" BugLink: https://bugs.launchpad.net/bugs/1988721 [Impact] There is no output of external 4k DP monitor via USB-C to DP dongle. [Fix] Isolate link training sequence, the external DP monitor will be good. [Test] Verified on hardware, external 4k monitor works fine after re-plugin and suspend. [Where problems could occur] It may break the display output on AMD GPU. This commit is from 5.18-rc1, and no issue on jammy kernel. SRU for oem-5.17 only. George Shen (1): drm/amd/display: Refactor fixed VS logic for non-transparent mode .../gpu/drm/amd/display/dc/core/dc_link_dp.c | 102 +++++++++++++++++- 1 file changed, 97 insertions(+), 5 deletions(-)