From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792584336; b=jK7sm6+j/FSIPiJJMJkLFNNWbaUGsfrlb/O5CHWIkiZhhp/aiQvuaoceCJsHSleqZsmY L4RKymhDGtAYMAQg5oMrLM0XUtIuc6KLK5KSnez4m2V4PQlZ17RcXooClA8H653Q9J6/2 R4uiWjDSxtevFGt6U4RgpdYfntTxI3h8/zuDtZD7+kXXsFNUQHOgTcKeglTjJGMDFIdRI Z11IJ4ym61YUfsJR/m6q0sHgx9knI0M0q6uC07mKCvn3/s0n6LOrj5uuHLjXJP8hrjN/+ 54zfMcC0Iq9B1iBPcCJZ4Q5roHLAnt84TCo06iveXTW4Kh+hiizt++nv3WjieHyTW9A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792584336; h=Received:DKIM-Signature:Message-ID:Date:MIME-Version:User-Agent: Subject:To:Cc:References:From:Content-Language:Autocrypt:In-Reply-To: Content-Type:Content-Transfer-Encoding; bh=ze9st+CWG9+vAvDSNFCM7xaKkAlJJhDjRG5Nao1FAl8=; b=1fr5q5/L79ADe5J9jt8bAONAubpndyzF4LQz6/ZqY9eqNy7hfpN4dpQOA/+lYiKaphha K6kX6oq8DNg4hJUG19olF18m6rNQ6Wh/X+vFgl54GtabzsizUEPfU9XMjJKdOjw0yApjK MIEpAidzUp+dc6LSGRNhxyP3oE9PM0Y6UAWQyR4C2OrJmKlXt7S0IqgOpOnpwdv2CBXCb 5KLZINahCoxWzDh3gfu25M40Y1vWLrNVkRwbX4Dc4ZX61Wlwj8rYcOeU37EsUMjhBbbCp WaQTjtBWGcZJKvYvndAzIHvqDWN9O8eikWtjDj29Eb1R8QHrSIa8JTcpp7Hcwi4/OFg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=B3at8DuL; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1719C606A319; Wed, 21 Oct 2026 12:05:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=B3at8DuL Received: by smtp.kernel.org (Postfix) with ESMTPSA id 271DC1F000C6; Wed, 21 Oct 2026 12:05:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792584335; bh=ze9st+CWG9+vAvDSNFCM7xaKkAlJJhDjRG5Nao1FAl8=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=B3at8DuLrC5l/J796GuQjjPsFztYOpPguy7HUZ4WBb4pYI26lpU059vat7wNYEOG/ 9XUhhPzyU0cg8CAigzvgV1aGJ8GatwbNdnldd7+RNiA69dP8lgMMnINqjRLnHloIYo UAX3bOkI1jM1KMcgG2XI/te1m8/Yu9n1dAP249cTGbcfBkNayRBBrGPhpchGHhDMc3 qdPv82y89AXhbJi+oKs6nzAFn+cl/d/83iOwrysb+a+TH3yYcomXJ4hVixhMZ8/yRw uU28D2O1zKiNZfVB6zJ/QTGZA79DkscMNvScM5JCX7dsE4p4v+tZNiMPJmOjudpFN1 EJ7c/aDoHtrSw== Message-ID: Date: Wed, 21 Oct 2026 14:05:17 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 09/13] drm/msm/dcp: Register DCP display pipeline To: Jayant Shekhar , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= , Philipp Stanner , Bjorn Andersson , Konrad Dybcio , Abel Vesa , "Joerg Roedel (AMD)" , Will Deacon , Robin Murphy Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, iommu@lists.linux.dev References: <20261015-jshekhar-drm-msm-dcp-v1-v1-0-48aad0fe4f72@oss.qualcomm.com> <20261015-jshekhar-drm-msm-dcp-v1-v1-9-48aad0fe4f72@oss.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 15/10/2026 09:38, Jayant Shekhar wrote: > The DCP firmware exposes display resources through capabilities rather than > through host-visible display registers. The MSM DRM backend therefore needs > to build its KMS objects from the firmware capabilities and device-tree > display graph. ... > + > + remote_np = of_graph_get_remote_port_parent(ep_np); > + of_node_put(ep_np); > + if (!remote_np) > + continue; > + > + if (!of_device_is_available(remote_np)) { > + of_node_put(remote_np); > + continue; > + } > + > + if (of_node_name_prefix(remote_np, "dsi")) { Where did you document the ABI? > + if (dsi_idx >= ARRAY_SIZE(dpu_kms->dsi_bridge)) { > + dev_err(dev->dev, "too many DSI outputs\n"); > + ret = -E2BIG; > + goto out; > + } Best regards, Krzysztof