Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A31CFC433F5 for ; Thu, 13 Jan 2022 07:42:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232430AbiAMHml (ORCPT ); Thu, 13 Jan 2022 02:42:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232273AbiAMHmk (ORCPT ); Thu, 13 Jan 2022 02:42:40 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C023C06173F; Wed, 12 Jan 2022 23:42:40 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id DD7E7617EE; Thu, 13 Jan 2022 07:42:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5D8BC36AEB; Thu, 13 Jan 2022 07:42:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642059759; bh=aj+Ty+LL6hJYprfF8bZ6YdjqiZvpfeIwP7onRntXsxw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=d4lMxM/iSIj/Q3rlYeQbBZDmcFXkb+T/1iRLcSOpESFyw+6jp8bEVkWQuJL2/xQYb 9vMdXNFp08L4Qis3WW1VgkMuUEI9eEJ/wdL9vD3TF9JIBfRU5u6kBaUNxupL5/6Y0/ 2UsjQRagw6T8ipn3RY1kxT2wZlYy6FvE8UOafCNBE7X9NuYvTlHG5Aolrc5C2FSr4Y dfKhTOw9J5xsF7TlBGcFrNCuYbabZ/kOSumFslgVX1c4LG7+p++ZsYhPxGZgpMzTLq 3Y4+EA8NiLFVyFw2JVxxR/dkRwDlb869PtCKkUaXK57QFLvN8Dv6meMEWlrLnQW37H GDAcdWrVeqkZw== Date: Thu, 13 Jan 2022 08:42:32 +0100 From: Wolfram Sang To: Terry Bowman Cc: Andy Shevchenko , Guenter Roeck , Jean Delvare , linux-i2c , linux-watchdog@vger.kernel.org, Linux Kernel Mailing List , Tom Lendacky , Robert Richter Subject: Re: [PATCH] i2c: piix4: Replace piix4_smbus driver's cd6h/cd7h port io accesses with mmio accesses Message-ID: Mail-Followup-To: Wolfram Sang , Terry Bowman , Andy Shevchenko , Guenter Roeck , Jean Delvare , linux-i2c , linux-watchdog@vger.kernel.org, Linux Kernel Mailing List , Tom Lendacky , Robert Richter References: <33a0cd08-a336-34b3-d36c-f827b8054e9e@amd.com> <811d6ec7-7eac-dfd3-5927-4adcc2251fab@amd.com> <74eb7c8f-7072-495a-fc26-b60bf0a1f51a@amd.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="nUPXFkb+mu9c8rKV" Content-Disposition: inline In-Reply-To: <74eb7c8f-7072-495a-fc26-b60bf0a1f51a@amd.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nUPXFkb+mu9c8rKV Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > > On top of that I'm wondering why slow I/O is used? Do we have anything > > that really needs that or is it simply a cargo-cult? >=20 > The efch SMBUS & WDT previously only supported a port I/O interface=20 > (until recently) and thus dictated the HW access method. =20 Is this enough information to start v2 of this series? Or does the approach need more discussion? --nUPXFkb+mu9c8rKV Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmHf1+QACgkQFA3kzBSg KbZlGQ/8CwGpBpdZ5PkPlx9rPOQu4vqmY9XVOUFc/usYIYobBF4Ipt8z7o/dY8dy oDoNXCZ4A3Fs5ifaP2HY2HMwhXsuYYUht3pyWhQIduubc+eYdbw4PYuBoOTKY31Z SleZRGjCmne0L93Le1vrE/xS/06dTD5qT6u7LngJ0OtoZ6IVsz/TqPMEZ3hxE4sJ ThPTS+9ayHx//H63Ielg0vmy+/BfPyEXCnE/tDeGFBaO2VlmfsQgI2IhU8YQkYt1 rv3GZHgmlNRCgAKY0pUj4IEM1BA0g1C0oWZFTEMIH+ua30DOiSD79eC6/+0PhkOE AOwCyaERrWPh6EINZBC9d8UiZPwtaMseNaxJwH4yVxnV/Nk+tY5+w7gZziMxma9d ztJ1hGHtTriNNszLGuw5X/EuZbmBzWDL9Nr0uQOyt3wOFdoEsPhD08JwrrHh2Ctl VhMLEynJKH6RcYCokJd7k2IkwXk4lkCsNZ0mCZWLu+XyVacP6qJzlLtr7Yl/F6Na tkcYGJlrbrRVX+LRAVois7z/GdwLi1ECl+WS0FaZRlzyNgVe7dC7UHZHNgDQshin e1FLg2dq3xg2JlxSPaGT8fvlUS4EnI3pgQk6nlD+ghS0rl3iXr98KRNmkpgFcpov vB9He3zhKTGz6U47MHylB9/ISdyLuYy7AaqeqXnhGidKtjBCFqw= =SGXV -----END PGP SIGNATURE----- --nUPXFkb+mu9c8rKV--