From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 32E18265CC0; Tue, 19 Aug 2025 07:51:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755589878; cv=none; b=lKO3cshM3buDgaxNee28oeKsT3IE9YF5b3On0NxwqWSD3ChyTGR5xqAGVDazGrKTo/xcV4oPu6Nus/V1caqfEnzE3LKi9nFrwm5mAldQEqHRlEuOB2hEBCI7vrnpH9yPawsCsJwEK2yGC82AWm+vHDlXOxNXBKw8hddjj/p+lsc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755589878; c=relaxed/simple; bh=1KjMFPAAy7Of/g5v9RlyD3qGeTWf6aQZhMCt01jFZm0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sVrez5Dv1EGChUgsA8MjyCQt3QodsDDWIvY5hAjY+VJ9Lnu5+ctvVYzH+2wEUjiyMEIJjWYckU/s5Hmpfzo0/3I0LBPuavz++XevVAKfn8rC1Vdv8GRT05+30zoh8Njn0l2dK+mYFv17jMmGirPJR73vMAIwgHjyWDsIJ/DvNbA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S3xd/PLX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="S3xd/PLX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82E80C4CEF1; Tue, 19 Aug 2025 07:51:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1755589874; bh=1KjMFPAAy7Of/g5v9RlyD3qGeTWf6aQZhMCt01jFZm0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=S3xd/PLXPsg8ni9XMNKrIMcyApxi0ibkwoCM9y72SbJeks01m7kD4A+ZkZqllc9WW ABL4hzma5LVBv4rLd6YU3WFQoce/JFOTb86NKoZBA4EzGtpmixuw97almGHm1Ew5OT Y5lkCYBJVjT/ZbTxZwNtSWIrINtmJy+khWXtnrjjvXyfcx+ETF0Xgt9b2aatVogrTa zgrAJ1ocMsgoXRD3tCpHkI7CfvNY84fW9X+qhlQ+GUcbqHh57pfMYf5ivy7fAjarHH gOc1NbNa2qLnWrgtT38eFkpwSJKLKXS6qSezstBuc7rRei7s+41/3Zlmw+ZYFTfnHW Qc5QESmf+UVsw== Message-ID: <9fba4917-a24f-4fee-8f1a-7509a0bc542e@kernel.org> Date: Tue, 19 Aug 2025 09:51:06 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: drm/bridge: ti-tmds181: Add TI TMDS181 and SN65DP159 bindings To: Mike Looijmans , Conor Dooley Cc: dri-devel@lists.freedesktop.org, Andrzej Hajda , Conor Dooley , David Airlie , Jernej Skrabec , Jonas Karlman , Krzysztof Kozlowski , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Rob Herring , Robert Foss , Simona Vetter , Thomas Zimmermann , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250812145256.135645-1-mike.looijmans@topic.nl> <1b153bce-a66a-45ee-a5c6-963ea6fb1c82.949ef384-8293-46b8-903f-40a477c056ae.3b7d4319-e208-470d-9ada-585343a64822@emailsignatures365.codetwo.com> <20250812145256.135645-2-mike.looijmans@topic.nl> <20250812-designing-tyke-db85527b373d@spud> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 19/08/2025 09:46, Mike Looijmans wrote: >>> + >>> +properties: >>> + compatible: >>> + enum: >>> + - ti,tmds181 >>> + - ti,sn65dp159 >> The driver contains: >> + { .compatible = "ti,tmds181", }, >> + { .compatible = "ti,sn65dp159", }, >> + {} >> so why is a fallback compatible not suitable here? > > I don't understand the question. The two are slightly different chips, Your driver says they are compatible. No one said the same, but compatible. > so it makes sense to describe that in the DT. Compatible devices should use fallback. There is plenty of examples (90% of all binding files?) including example-schema describing this. > Best regards, Krzysztof