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=-10.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=ham 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 67E06C636C8 for ; Tue, 20 Jul 2021 16:08:41 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 368536100C for ; Tue, 20 Jul 2021 16:08:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 368536100C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=bugzilla.kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BFCA789954; Tue, 20 Jul 2021 16:08:40 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 02F92891CE for ; Tue, 20 Jul 2021 16:08:38 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPS id CD86F610D2 for ; Tue, 20 Jul 2021 16:08:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626797318; bh=dApPVcBB/jtfRPotj6kpFRV5fB4trfyYQu7F8ZK0VcY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=gB6pKtOj0FmK/1CEoBL828eW/2QKFI00laYFpSRM9ltWJWJDpMGTccVrAp11W2VYm uwWG7Q6KcT+ajZYB2H7OiaXjPXCltMvQYn/Z7HHMy0MVfD5PtCILCYPKDqoTyfcDrq gmt3qGWcesTKJP5NFrTwdPXmXxvxI8KP42CSZatEjx9a2FNf8g98DRxaUar+0WZ1Xa YRNzNwEbYKeh8ezROeF7HC6GaBRnfWsh5tjwA8ffZusHm+7xIPcmN7wnmrVj3filJt gJKnn4tWq6qUnM0iI5c2TgG901PvOVgbrm7jrbcnsE5gh4DDP2fO1/hP+MtmL0nxqW w63bCPzOAmaMg== From: bugzilla-daemon@bugzilla.kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 213715] failed to change brightness of HDR panel on AMD GREEN_SARDINE through aux Date: Tue, 20 Jul 2021 16:08:38 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Video(DRI - non Intel) X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: blocking X-Bugzilla-Who: mario.limonciello@amd.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" https://bugzilla.kernel.org/show_bug.cgi?id=3D213715 mario.limonciello@amd.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mario.limonciello@amd.com --- Comment #2 from mario.limonciello@amd.com --- I would suggest to work with BOE and CSO to fix the DPCD values in panel firmware to not report aux control if it is not functional. You can see the kernel checks the DPCD to determine whether to use AUX or P= WM. https://github.com/torvalds/linux/blob/c010efb7f0bc0c3cb2cd26b000f71d4bd0c4= 27cd/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c#L2433 BTW this behavior has been also been reported in the past, so a heuristic m= ay be introduced at some point in the future for the buggy panel firmware: https://gitlab.freedesktop.org/drm/amd/-/issues/1438 --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=