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 45DBC4C91; Tue, 4 Jun 2024 15:22:11 +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=1717514531; cv=none; b=g2yRIC/Wi+dqmsEWPTmsBijM17+Nv29jheO0MB7VLdbzUOzWgVM9rogZdxDGK1UUxqigOQIzXfKtmQHvAEHl0dCt5jF4oXsPO5OjcK2JE4gwvdtMyMNmA0HdfPTq6nu2Mbs94eM6bMm7l75bx1KKfkuvRs+udHP1XMESBTh7THQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717514531; c=relaxed/simple; bh=i37zzyVngEVftThnTr0XIEMfXfr0oJ3rTWotIrQxhec=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=asQgMaDcOB8ERTIdrUYxKqA5WdbZdD6C319zp6c6o38RVlQYidEtI5lzth9avkctFRQmqH9+IYJRGOGjts+eZMlxlNxt/PyNECVlBGMREMpjiyxRElbtQDwJZYuAc/fnperRg6ny1XwFz5lkcyGEeYAz0GGirfnLr6deJOBcndQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KlRMA5jw; 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="KlRMA5jw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B7BF3C2BBFC; Tue, 4 Jun 2024 15:22:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717514530; bh=i37zzyVngEVftThnTr0XIEMfXfr0oJ3rTWotIrQxhec=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KlRMA5jw/rssb3MWW96YE4k81ilgJ3FecME3snpmO+K2C5Z4KfnNVnddHKLUHXbt5 7rETmWmOCYkSINdlCDRMafyq0lx8KihJysrzDJg4jWbtbGSpDTE3JrtzXwbVtmQkb1 sL4uMwSvKzhNaQ+rWf77f24lImfrGMyu9Hle4qtjazxQb0bvhM9raNNBMlJlBSGV/A xo992e3HDfyHY9mOWM3GyIdx2lOyTSlORCnth6zw9nwXkd6dPjv6fvye7LCIoBc5is kdw5WPU3Jt1nUMcjFRIxq0y9O9n5yujTmw0GfyStMVgzmLVKh+RyKrUb2b1EXiE7Yu ghyurpYC1Czew== Message-ID: Date: Tue, 4 Jun 2024 17:22:03 +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 1/7] dt-bindings: display/msm/dsi: allow specifying TE source To: Dmitry Baryshkov , Abhinav Kumar Cc: Rob Clark , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krishna Manikandan , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org References: <20240520-dpu-handle-te-signal-v1-0-f273b42a089c@linaro.org> <20240520-dpu-handle-te-signal-v1-1-f273b42a089c@linaro.org> <224fa477-07ba-e7b2-2f7d-8f7d21f4a0c7@quicinc.com> <5cde2f43-89ab-d2d4-d68e-605f8f5d1da7@quicinc.com> <4b604c91-7b1f-46b3-6b41-fe7d45190b78@quicinc.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 04/06/2024 17:14, Dmitry Baryshkov wrote: >>>>>> >>>>>> I didnt follow why this is a link property. Sorry , I didnt follow the >>>>>> split part. >>>>> >>>>> There is a link between the DSI host and the panel. I don't want to >>>>> end up in a situation when the properties of the link are split >>>>> between two different nodes. >>>>> >>>> >>>> It really depends on what the property denotes. I do not think this >>>> should be the reason to do it this way. >>> >>> It denotes how the panel signals DPU that it finished processing the >>> data (please excuse me for possibly inaccurate description). However >>> there is no direct link between the panel and the DPU. So we should be >>> using a link between DSI host and the panel. >>> >> >> Yes, I totally agree that we should be using a link between DSI host and the >> panel. >> >> My question from the beginning has been why the output port? >> >> It looks like to me we need to have another input port to the controller >> then? >> >> One from DPU and the other from panel? > > Dear DT maintainers, could you please comment on the OF graph entries? > Are they considered to be unidirectional or bidirectional? > > Would you suggest adding another arc to the OF graph in our case or is > it fine to have a signal generated by the panel in the 'panel_in' port? Which pin are we talking about? DSI or panel? Commit msg suggests DSI, so property is in DSI node part. Seems logical to me. Best regards, Krzysztof