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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 62807C2BA15 for ; Sun, 5 Apr 2020 18:05:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2FA44206F8 for ; Sun, 5 Apr 2020 18:05:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727417AbgDESFN (ORCPT ); Sun, 5 Apr 2020 14:05:13 -0400 Received: from sauhun.de ([88.99.104.3]:38412 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726771AbgDESFN (ORCPT ); Sun, 5 Apr 2020 14:05:13 -0400 Received: from localhost (p5486CC0D.dip0.t-ipconnect.de [84.134.204.13]) by pokefinder.org (Postfix) with ESMTPSA id BDEAA2C1FCA; Sun, 5 Apr 2020 20:05:10 +0200 (CEST) Date: Sun, 5 Apr 2020 20:05:10 +0200 From: Wolfram Sang To: Andy Lutomirski Cc: Stefan Schaeckeler , linux-i2c@vger.kernel.org, LKML Subject: Re: [PATCH 0/1] i2c: imc: Add support for Intel iMC SMBus host controller. Message-ID: <20200405180510.GD6313@kunai> References: <1582498270-50674-1-git-send-email-schaecsn@gmx.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="osDK9TLjxFScVI/L" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --osDK9TLjxFScVI/L Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Feb 25, 2020 at 01:49:34PM -0800, Andy Lutomirski wrote: > On Sun, Feb 23, 2020 at 2:52 PM Stefan Schaeckeler wro= te: > > > > This patch is based on Andy Lutomirski's iMC SMBus driver patch-set > > https://lkml.org/lkml/2016/4/28/926. It never made it into the kernel. = I hope > > this rewrite will: > > > > > > Overview > > > > Modern Intel memory controllers host an SMBus controller and connection= to > > DIMMs and their thermal sensors. The memory controller firmware has thr= ee modes > > of operation: Closed Loop Thermal Throttling (CLTT), Open Loop Thermal > > Throttling (OLTT) and none. > > > > - CLTT: The memory controller firmware is periodically accessing the DI= MM > > temperature sensor over the SMBus. > > >=20 >=20 > I think this is great! One question, though: what happens if the > system is in CLTT mode but you disable CLTT and claim the bus for too > long? For example, if there's an infinite loop or other lockup which > you have the tsod polling interval set to 0? Does the system catch > fire or does the system do something intelligent like temporarily > switching to open loop? Any news on this question? --osDK9TLjxFScVI/L Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl6KHdYACgkQFA3kzBSg KbbHcA//dmYTyau5m8uZUNnYgJ+AsL4/jprivL0wMkLtFlXO29EHjt0AgQnkYz9L OrxVH8ZMR0e/wXpICbP6mjf3kdPIQaE5uAs6FPS3Qb+jFpWElQlaDFpQqLHTJEuJ q4Vve6nnYnLMa3RQLpZgvhn2tYmPRSee3oir54wxovm7NOV8hB726azr61UwNvl7 W0GAJNI1V+jBZxeauTx4j3yBO1nGDaDqeQklLcfusVxre4UO2KJvJvrQ5W1nU90k yMtV+AIV4tD0io0KdvMoguu/3VsUDXHfPc9XHihHot+SnoUgAisqOdfPIUUIHEwI jV+zc+c9Z3nXy8Az6/MW5fMYLZulDgTdAnjNUTp4HYgcrPDUrhQLAULI6NIlxF/V CB26nDNFg6Zri+DXqjSRMKKvLC7+c11X0YJ3TI7zGDnastv3YNE1ZqIuALlb+oxM iN1bjYwRvkL25fmzl4vKsVA/BM1YPReacT3OIVwd+5pLtglDnLDG3lZujX6nFzcp +bxDqpLonNPOcjk+E783yW4LzWEhqajDODeDaDULPLeui8Z3oBSLvZvPG/hinWtn +8nBSHtyfzEEptd1oqP94FECiDu6/Fra18Gy80xn790nlSSwKCqy1xU9opB/1iPx WhRaTw/6aIQA0Is2TWh2c0/Jk4c9FKNBFCn9XkixPcNUA1mAJpU= =XoV1 -----END PGP SIGNATURE----- --osDK9TLjxFScVI/L--