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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 B1435C2BA19 for ; Wed, 15 Apr 2020 10:30:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A552206D9 for ; Wed, 15 Apr 2020 10:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405945AbgDOK2l (ORCPT ); Wed, 15 Apr 2020 06:28:41 -0400 Received: from sauhun.de ([88.99.104.3]:51858 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2408616AbgDOK2d (ORCPT ); Wed, 15 Apr 2020 06:28:33 -0400 Received: from localhost (p54B33507.dip0.t-ipconnect.de [84.179.53.7]) by pokefinder.org (Postfix) with ESMTPSA id 67FD02C1FF1; Wed, 15 Apr 2020 12:28:24 +0200 (CEST) Date: Wed, 15 Apr 2020 12:28:24 +0200 From: Wolfram Sang To: Adam Honse Cc: jdelvare@suse.de, linux-i2c@vger.kernel.org Subject: Re: [PATCH] i2c: Detect secondary SMBus controller on AMD AM4 chipsets Message-ID: <20200415102823.GI1141@ninjato> References: <20200410204843.3856-1-calcprogrammer1@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="CD/aTaZybdUisKIc" Content-Disposition: inline In-Reply-To: <20200410204843.3856-1-calcprogrammer1@gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org --CD/aTaZybdUisKIc Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 10, 2020 at 03:48:44PM -0500, Adam Honse wrote: > The AMD X370 and other AM4 chipsets (A/B/X 3/4/5 parts) and Threadripper = equivalents have a secondary SMBus controller at I/O port address 0x0B20. = This bus is used by several manufacturers to control motherboard RGB lighti= ng via embedded controllers. I have been using this bus in my OpenRGB proj= ect to control the Aura RGB on many motherboards and ASRock also uses this = bus for their Polychrome RGB controller. >=20 > See this kernel bug report: https://bugzilla.kernel.org/show_bug.cgi?id= =3D202587 >=20 > I am not aware of any CZ-compatible platforms which do not have the secon= d SMBus channel. All of AMD's AM4- and Threadripper- series chipsets that = OpenRGB users have tested appear to have this secondary bus. I also notice= d this secondary bus is present on older AMD platforms including my FM1 hom= e server. >=20 > Signed-off-by: Adam Honse >=20 Reformatted the patch description, added Sebastians tags and applied to for-next, thanks! --CD/aTaZybdUisKIc Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl6W4ccACgkQFA3kzBSg KbaKZw//eHfOiu4gIuuWMDcPzWEcRPPuLWH5/f/7ytR74JLO9Ckps9zb5LfmlTsl NbrxLPKLigODkhhj3r/opkNAeRcROnYlXkEyJDUiGoMfPohzbo/t5LNHM7tBQxm9 JKAn+O8l7ju0bnButE6O2ziS8SZgM0fnT2sC0x4P27uGPCjBayvNGP3TpPyzlwht Ez21ezIh8Jt/ugYvMKq4lix4Uyk7qW5W0fwXm1OOYMMpjwaLuP2dO2QQC7Tf7T5k mDITw7t4ICLZX9oY+fOWBIf6rWHKsdFCI0wOrKP+lpGRHH2C4eGPgOlexcsCrETv NN17Ptyj/TrsCKbGz9VeGssrrrOgK/BEof0myT5uG1G/4clLU6QRv10O5hmo8WOO l0DG0RzlQIsnjmWJOF0wZSBpQDbFe5Oa9Td7v2QjShZykJmV5FBnMookFqBof0j2 ngVjjxADUEzlFI/VsZWZWeWUmlFI0N18gaWTQ0EONZk9OeU7czFGOmsjR9rDDFJH C40kMOvYJ1WUiinpNqmwAt0Ma6l3LfXSQbE9bdiH0+jnoXhRSeexGFWt9+25UH68 cm31m/xDJzjUmwA2oaPKUUIzFDbFHHA+I+ii900/DO4U88kFr6803y+7xECtpKQI WVMl85kd0Uu3xLGI/FBCi4qoFU9dReco2HZpy4xJketHBVoPPSs= =4vKg -----END PGP SIGNATURE----- --CD/aTaZybdUisKIc--