From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71406C2BA83 for ; Fri, 14 Feb 2020 13:10:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3272E2086A for ; Fri, 14 Feb 2020 13:10:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="eSnObmA8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728036AbgBNNKo (ORCPT ); Fri, 14 Feb 2020 08:10:44 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:37394 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726191AbgBNNKo (ORCPT ); Fri, 14 Feb 2020 08:10:44 -0500 Received: from pendragon.ideasonboard.com (81-175-216-236.bb.dnainternet.fi [81.175.216.236]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 14E04504; Fri, 14 Feb 2020 14:10:43 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1581685843; bh=VBpnQBYrhS7rjLikkevn4VY+OoeRpTZ17mrFu2uIFkI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=eSnObmA8eOFh0K2ebyyFg+LI6qet1ihcffdb8byKZ4v3oU0wkEJkF1+nyihZHhzPF 2aQO2wtxyIkrz7RpgrddgUxhajY3HmSd7DzXCCmtAi+tsXM7UNLi8Ua4qHCz5/QJL7 WikTXkvV1tNladGZ7HpnTfDjaHvHH23z/gPwEcRQ= Date: Fri, 14 Feb 2020 15:10:25 +0200 From: Laurent Pinchart To: Maxime Ripard Cc: Chen-Yu Tsai , Maxime Ripard , dri-devel@lists.freedesktop.org, Maarten Lankhorst , Sean Paul , Daniel Vetter , David Airlie , devicetree@vger.kernel.org, Mark Rutland , Rob Herring , Frank Rowand , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 1/2] dt-bindings: display: sun4i-tcon: Add LVDS Dual Link property Message-ID: <20200214131025.GI4831@pendragon.ideasonboard.com> References: <20200214123244.109300-1-maxime@cerno.tech> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200214123244.109300-1-maxime@cerno.tech> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Maxime, Thank you for the patch. On Fri, Feb 14, 2020 at 01:32:43PM +0100, Maxime Ripard wrote: > SoCs that have multiple TCONs can use the two set of pins on the first TCON > to drive a dual-link display. Add a property to enable the dual link. > > Signed-off-by: Maxime Ripard > --- > .../bindings/display/allwinner,sun4i-a10-tcon.yaml | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-tcon.yaml b/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-tcon.yaml > index 86ad617d2327..aa6dd8409dbc 100644 > --- a/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-tcon.yaml > +++ b/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-tcon.yaml > @@ -105,6 +105,13 @@ properties: > - const: edp > - const: lvds > > + allwinner,lvds-dual-link: > + type: boolean > + description: | > + On a SoC with two TCON with LVDS support, the first TCON can > + operate over both pins sets to output in a dual-link setup. This > + will be triggered by setting this property. Could you maybe provide an example of how this property is supposed to be used ? I'm especially wondering what ports are used in that case and how they're connected. > + > ports: > type: object > description: | -- Regards, Laurent Pinchart