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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 3C299C433E1 for ; Fri, 15 May 2020 17:17:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D4F420671 for ; Fri, 15 May 2020 17:17:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="LP/syxty" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726563AbgEORRP (ORCPT ); Fri, 15 May 2020 13:17:15 -0400 Received: from www.zeus03.de ([194.117.254.33]:51172 "EHLO mail.zeus03.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726550AbgEORRP (ORCPT ); Fri, 15 May 2020 13:17:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=sang-engineering.com; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=k1; bh=AMR5jXEokMZ/3kQZjTX3bu3Iy5KP 19A2jn+GsTxjF4c=; b=LP/syxtyG+nb5JwbKx0hlFDzR3GZ5hOhQ9+1Ux6AI8D5 ZubTmfoBF/LyI0jHWjAh7xRWUY9oexhNARw6/PyUCai8e6AKFD+efTi1rz6TPyW0 13wiXhMtQb9kiZS58cPPzU7VqQ8k5j4XVEqJquja1GlEt5nsjrUgCpZEOlYz3kk= Received: (qmail 70421 invoked from network); 15 May 2020 19:10:32 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 15 May 2020 19:10:32 +0200 X-UD-Smtp-Session: l3s3148p1@+BUH5LKlRqogAwDPXwnHAMSqtBM6FBGP Date: Fri, 15 May 2020 19:10:31 +0200 From: Wolfram Sang To: Lad Prabhakar Cc: Geert Uytterhoeven , Jens Axboe , Rob Herring , Ulf Hansson , Sergei Shtylyov , "David S. Miller" , Wim Van Sebroeck , Guenter Roeck , linux-ide@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-watchdog@vger.kernel.org, Prabhakar Subject: Re: [PATCH 03/17] ARM: dts: r8a7742: Add I2C and IIC support Message-ID: <20200515171031.GB19423@ninjato> References: <1589555337-5498-1-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> <1589555337-5498-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="IrhDeMKUP4DT/M7F" Content-Disposition: inline In-Reply-To: <1589555337-5498-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-ide-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org --IrhDeMKUP4DT/M7F Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, May 15, 2020 at 04:08:43PM +0100, Lad Prabhakar wrote: > Add the I2C[0-3] and IIC[0-3] devices nodes to the R8A7742 device tree. >=20 > Automatic transmission for PMIC control is not available on IIC3 hence > compatible string "renesas,rcar-gen2-iic" and "renesas,rmobile-iic" is > not added to iic3 node. Makes sense. However, both versions (with and without automatic transmission) are described with the same "renesas,iic-r8a7742" compatible. Is it possible to detect the reduced variant at runtime somehow? My concern is that the peculiarity of this SoC might be forgotten if we describe it like this and ever add "automatic transmissions" somewhen. --IrhDeMKUP4DT/M7F Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl6+zQcACgkQFA3kzBSg KbYmEg//Sy08rxbE7CQJWmifMe+J/n/a+aH2CCs3cvFNsRE3DPGOOJCs9jLX87oy qwsccQ5z/QlX6QZv/jrGh4Tn9Tu+4F8iA9K5JzmtjeNKULwiHHzVjb2vk3vcxHDq EXdRjCwXJ0XJbxRwLXyDYZh4TOMhKeoNKcmN8oFEj6VtE6dL64m/F69wyyXdJTez ZhIxL1MjQELN+vlbZkA+J4Zo+ugNyTZ3diSL+s9xI5de2fWBJv3IzdeKWoHWG9Su ExUWRIs/Y0dBapuAx78sq1FDauAUSer8d4llopIoXN6Snpr0ijJUh4R7VVoZsK+c PTZkqlgYBfYWdUZiUBaM2oINk69ef1Y/wqOt9iMxJDXq7cTw/rb3UBd/va6MFbb/ vOBb4Z2FVai4cseNkkgcLHgz229gkloRr7f+HKGL8r42LRUfMBko0W0D/WEN+DKW 8Y/0MCRTd7+h1I3SkuVT7fjbPiw+lTkwZhsJrZRrqiqeq+m2J2325tZI+A5hq0qu uX27BdGRPS5jaA/i+UQSySuoWvORKCKwAjJIElt/UOOPHQDEWKRH8QoJ8wFkgN2k sCrKHi9sS3XcVvIy5ieiF5rf8zEV4mNLtkZV/CzvjqTzMfh5f5eWmoC1tkkkakRc KaTrT/4T46ZpQdog7U8GfYXUujn6nRN+X+qnVFOc7MNmGd00yk4= =AO2d -----END PGP SIGNATURE----- --IrhDeMKUP4DT/M7F--