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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 B7E39C433E0 for ; Sun, 17 Jan 2021 11:45:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C24420791 for ; Sun, 17 Jan 2021 11:45:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728641AbhAQLpf (ORCPT ); Sun, 17 Jan 2021 06:45:35 -0500 Received: from www.zeus03.de ([194.117.254.33]:56966 "EHLO mail.zeus03.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728499AbhAQLom (ORCPT ); Sun, 17 Jan 2021 06:44:42 -0500 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=g2JStMt2togUITmRS2fQ0q1p1eOf wFPzmkuuf72bPJk=; b=kL4jtkXr5G10/0fU+TLCBqZdXmhIEDAhGHyIwUO+NyRl 7YKKF97xt9dgiZSsoExShK2UU8xt5tGr3x4VIaxKlBRsPV2K7hR+fYossk40WBqI Jxk1ubWFtePkUmib1EU3lV6RcmMy+DJkxoHgsFNmBUVnsQPC8cHAfpOQiuJ8yJQ= Received: (qmail 307363 invoked from network); 17 Jan 2021 12:44:00 +0100 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 17 Jan 2021 12:44:00 +0100 X-UD-Smtp-Session: l3s3148p1@reMZHxe5ppkgAwDPXy7qAHeYPdzlZkhM Date: Sun, 17 Jan 2021 12:44:00 +0100 From: Wolfram Sang To: Geert Uytterhoeven Cc: Linux-Renesas , Rob Herring , Linux I2C , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Linux Kernel Mailing List Subject: Re: [PATCH 1/5] dt-bindings: i2c: renesas,i2c: add r8a779a0 (V3U) support Message-ID: <20210117114400.GF1983@ninjato> References: <20201223172505.34736-1-wsa+renesas@sang-engineering.com> <20201223172505.34736-2-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="5CUMAwwhRxlRszMD" Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org --5CUMAwwhRxlRszMD Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > New features: > - Slave Clock Stretch Select, > - Fast Mode+ Enable, > - Enhanced First Bit Setup Cycle configuration. >=20 > Looks like the R-Car V3U variant can be treated as a generic R-Car Gen3 > variant (lacking the new features, of course). FM+ doesn't need an update. It will just handle higher values for the bus frequency. This is also the most likely one to be supported in Linux. First Bit setup is not even supported yet in the basic version. Configuration via Linux is unclear same as SlaveClockStretch. Use cases are unclear, too, which we would need for implementating any of this. --5CUMAwwhRxlRszMD Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmAEIvwACgkQFA3kzBSg KbbXFBAAsihiUyUTEcje17AWbRdnKQkuD5JVydJjOMwI7v2ZLVKjK0vDePImlnG2 modkQu7otK5NtzioVRulBmHD9Yrc5LtPx3F6SpAMwBX7ovo4lmII7xPmFnWozNfm pyoVsJBqrWxLe85lg979FRHuUqRePzlv+Cbb9DhPmzfHzKw3pQFt1en1qkp9S8P1 W9NaU+aMYM5Yizh2tuZOCI4BVVan9bp8EWKLTn3Ke/lg/9oC8UomeYrVCgjz5kB3 YWWjOb4/anST2RMUEU5dWy4WKClGCphUWZdbdBjS7Sq0k6C23SpX9dmz2jwADJ3a 75s3+nOZo4TwtVm0Mt9vjACr+znaP3rT47vXx+zff4CHMLgdt+savJkzw25tnCxb xzFRU0snOc6jwm+NZZ41DfDVgvWGZzMB5t2lSig9CzyOQGBkEbT9p/jrUY94AoyH RyQEwl7m/H/UlLN/dFMbZWOSS3Xekl8ISAR6mhuDwloWNU/zHuV4r7xZGA1TXD0F XIXtF9Qozu4HORJvY0oh3fiBz5X95KwChhD19xuBAKgVm1DSpYznHpX6KA8SZgI5 hKwucm+/E30C0HVqOSBLlKHZhVjicDamYYEvAR7Db05oTNQiPtnEgZqqKkWH7ZAo bkqnMZEeAzjVzodn66XEVFMwgXn/TqmB8kWlQHA571jpA6KItI4= =+IuA -----END PGP SIGNATURE----- --5CUMAwwhRxlRszMD--