From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4D9DA376BD6 for ; Tue, 21 Jul 2026 13:52:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784641981; cv=none; b=AbLmsdzvZLPqDY4smPxzPJ7DUUoJPQXTvKB5WuZdQMVma3YqgOD0YkklDdS3wORjAemjPV28py662y4HuFg7aOidvawTDW41/4mPLkPx7aKniTHl9Ds2XnshfLBkI/xoA/CGKXQa22+vMhfn7/nUNYzCPZKoq1OACt9TMxG9SbE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784641981; c=relaxed/simple; bh=mTscvaW54QrDZ9ks6EmcmLglz/tbxTvVPzp7nwW54d8=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=uKuvJBaXhnAKeELHmLeCyJQn5q79cEcoba5qVL2j/S2Fo7v2RCtnDlnB55oWlb+mzXMm6BbQcL2IN83KiMrS933fuYjeztvoATFkay4jZUWBmSsZOUGlAhvS+rnpgiYTqiVl+CiE9zcHhSCCu9A+w60iodk4Lolf54WWqK/A0w4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=P/qIBgto; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="P/qIBgto" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 44994152B; Tue, 21 Jul 2026 06:52:54 -0700 (PDT) Received: from e135116.manchester.arm.com (e135116.arm.com [10.33.50.66]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 79A693F58B; Tue, 21 Jul 2026 06:52:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1784641978; bh=mTscvaW54QrDZ9ks6EmcmLglz/tbxTvVPzp7nwW54d8=; h=From:To:Cc:Subject:Date:From; b=P/qIBgto/kHEnsY+PbULtiwnbNVkBrlAMaz6B2vASNvZOZkCkw/ixBwdmNpm2l5gp rujGKlQibVziPJeQdOVWXRhMqWaA/Zin+yphKq47moS5vebaGlaXSbkBiF9aAQfWBr FPaMbV6Y2r46Yz0OgjRP5/ZsnbE4FPC663XygngM= From: Raveendra Talabattula To: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, Raveendra Talabattula , liviu.dudau@arm.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, james.qian.wang@arm.com, vincenzo.frascino@arm.com, nayden.kanchev@arm.com, charvi.mehta@arm.com Subject: [PATCH 0/2] drm/komeda: Fix GLB_CORE_ID parsing and initialize encoder clone masks Date: Tue, 21 Jul 2026 14:52:25 +0100 Message-ID: <20260721135227.439413-1-raveendra.talabattula@arm.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Komeda currently decodes GLB_CORE_ID with bit definitions that do not match the hardware register layout, which leads to incorrect hardware version reporting. Patch 1 fixes the GLB_CORE_ID field definitions so the reported product version matches the hardware specification. Komeda also leaves encoder->possible_clones unset, so it remains zero for all encoders. As a result, DRM clone-mask validation can reject writeback configurations because no encoder is advertised as clone-compatible. Patch 2 initializes encoder->possible_clones after encoder registration, making the clone-mask setup explicit for registered encoders. Cc: liviu.dudau@arm.com Cc: maarten.lankhorst@linux.intel.com Cc: mripard@kernel.org Cc: tzimmermann@suse.de Cc: airlied@gmail.com Cc: simona@ffwll.ch Cc: james.qian.wang@arm.com Cc: vincenzo.frascino@arm.com Cc: nayden.kanchev@arm.com Cc: charvi.mehta@arm.com Signed-off-by: Raveendra Talabattula Raveendra Talabattula (2): drm/komeda: Fix bits parsing of GLB_CORE_ID drm/komeda: Initialize encoder possible_clones .../drm/arm/display/include/malidp_product.h | 12 +++++++---- .../gpu/drm/arm/display/komeda/komeda_kms.c | 20 +++++++++++++++++++ 2 files changed, 28 insertions(+), 4 deletions(-) -- 2.43.0