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Fri, 7 Jun 2019 18:15:11 -0400 Received: from [192.168.0.20] (cpc89242-aztw30-2-0-cust488.18-1.cable.virginm.net [86.31.129.233]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 6C7B0334; Sat, 8 Jun 2019 00:15:09 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1559945709; bh=rfkUJZmIew1eQx/KBErGmJsKERXVTA2y2zEl0IQU1pM=; h=Reply-To:Subject:To:Cc:References:From:Date:In-Reply-To:From; b=GM8dAUyvesYtcZgjEVHG3YRk6st8xjtd3xd+qJ/n82+5rFVFaeEfO4eyN38pwfqop wVjzXr93W5z87F9GLnSVsh/uyKgOahnnvlG7cAapOvZT3lYeHrcITdbMp1ZQiPwhPV aR8tmv48hwzwpxGp+H7k8jmORwiPmmsk8gUdzQLo= Reply-To: kieran.bingham@ideasonboard.com Subject: Re: [PATCH v3 02/10] dt-bindings: display: bridge: thc63lvd1024: Document dual-link operation To: Laurent Pinchart , dri-devel@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org, Jacopo Mondi , devicetree@vger.kernel.org, Rob Herring References: <20190528141234.15425-1-laurent.pinchart+renesas@ideasonboard.com> <20190528141234.15425-3-laurent.pinchart+renesas@ideasonboard.com> From: Kieran Bingham Openpgp: preference=signencrypt Autocrypt: addr=kieran.bingham@ideasonboard.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190528141234.15425-3-laurent.pinchart+renesas@ideasonboard.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 8bit Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Hi Laurent, On 28/05/2019 15:12, Laurent Pinchart wrote: > The THC63LVD1024 LVDS decoder can operate in two modes, single-link or > dual-link. In dual-link mode both input ports are used to carry even- > and odd-numbered pixels separately. Document this in the DT bindings, > along with the related rules governing port and usage. > > Signed-off-by: Laurent Pinchart > Reviewed-by: Jacopo Mondi > Reviewed-by: Rob Herring > Tested-by: Jacopo Mondi > --- > .../bindings/display/bridge/thine,thc63lvd1024.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt b/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt > index 37f0c04d5a28..d17d1e5820d7 100644 > --- a/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt > +++ b/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt > @@ -28,6 +28,12 @@ Optional video port nodes: > - port@1: Second LVDS input port > - port@3: Second digital CMOS/TTL parallel output > > +The device can operate in single-link mode or dual-link mode. In single-link > +mode, all pixels are received on port@0, and port@1 shall not contain any > +endpoint. In dual-link mode, even-numbered pixels are received on port@0 and > +odd-numbered pixels on port@1, and both port@0 and port@1 shall contain > +endpoints. > + Your cover letter details 4 different modes of operation for this part. Do you anticipate the other combinations {Single-in, dual-out; dual-in, dual-out} being supported? Perhaps that would be defined by the relevant endpoints being connected or not ? You state that in dual-link mode, both port@0, and port@1 shall contain endpoints, so that implies that you only expect to support dual-in with the 'dual-link' property. If that is correct, should it be stated explicitly? Otherwise, Reviewed-by: Kieran Bingham > Example: > -------- > > -- Regards -- Kieran