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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 BB9E5C28CFA for ; Mon, 1 Mar 2021 17:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A810664F42 for ; Mon, 1 Mar 2021 17:35:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238564AbhCARdw (ORCPT ); Mon, 1 Mar 2021 12:33:52 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:44320 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234768AbhCAQ2z (ORCPT ); Mon, 1 Mar 2021 11:28:55 -0500 Received: from pendragon.ideasonboard.com (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 2195D8A1; Mon, 1 Mar 2021 17:28:12 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1614616092; bh=zIQKsEQSeYt0vM1IDXx2S6ybJAbk8gSLvOd303Cl3/w=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=JO2+atOWKb+gad3wBZ7G6cybVMCz5eLCxzSGspZ+gSeelTmdfnGHY9kTcLfA3KjbD pPwLjF0CnSLZThDUGGQ3YSiJc18Wo13Yp4mWb6Gnzuk3/Ov8Rqa+LXLyssboPmxorZ +rJtWmfB1u5Wca+dxML/R8OLpRxBBelyi4qBa/9M= Date: Mon, 1 Mar 2021 18:27:44 +0200 From: Laurent Pinchart To: Parshuram Raju Thombare Cc: "robert.foss@linaro.org" , "robh+dt@kernel.org" , "airlied@linux.ie" , "daniel@ffwll.ch" , "dri-devel@lists.freedesktop.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "a.hajda@samsung.com" , "narmstrong@baylibre.com" , "nikhil.nd@ti.com" , "kishon@ti.com" , Swapnil Kashinath Jakhade , Milind Parab Subject: Re: [PATCH v2 1/2] dt-bindings: drm/bridge: MHDP8546 bridge binding changes for HDCP Message-ID: References: <1614597685-4192-1-git-send-email-pthombar@cadence.com> <1614597746-4563-1-git-send-email-pthombar@cadence.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Parshuram, On Mon, Mar 01, 2021 at 04:14:54PM +0000, Parshuram Raju Thombare wrote: > Hi Laurent, > > > Is this a property of the hardware, that is, are there multiple versions > > of this IP core covered by the same compatible string that support HDCP > > 1.4 only, DHCP 2.2 only or both ? Or is it a way to select what a given > > system will offer ?[] > > MHDP hardware supports both HDCP 2.2 and 1.4. So, this is a way > to select the version of HDCP, system wish to support. Then I'm not sure this qualifies as a DT property, which should describe the system, not configure it. A way for userspace to configure this would be better. -- Regards, Laurent Pinchart