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=-8.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 7D716C43461 for ; Wed, 9 Sep 2020 08:23:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2DA27215A4 for ; Wed, 9 Sep 2020 08:23:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599639827; bh=Yk5f469iMe5uWClYWw+4w6OxQkIrjVVzv2bmDLHjXYw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=IpTOTpsjApiID5t6+Wo8dpbkTzjmipSy6m912PimzrWcC9gs0Zy1sH/q5AfzlQ1vW 7AM0i9Lgzcy7gTnpvAiS42U290lgR7ZF29IJMbR5MxSsQJjCw3OaJQVzE4cQMr6+/Y yFhJUQg1stlHcXuu0zBsmb/VTkEUEFM6tdAXswHA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728443AbgIIIXq (ORCPT ); Wed, 9 Sep 2020 04:23:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:58086 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726414AbgIIIXm (ORCPT ); Wed, 9 Sep 2020 04:23:42 -0400 Received: from localhost (p54b33098.dip0.t-ipconnect.de [84.179.48.152]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 823552076C; Wed, 9 Sep 2020 08:23:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599639822; bh=Yk5f469iMe5uWClYWw+4w6OxQkIrjVVzv2bmDLHjXYw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YZe0HoVzUIgRWM3KPO86BpYg5a8BnYcAfxf6e82HppawaU50U9lxnIpf3Ku1F2IBJ jObg2dxqyvt7AiX/Ka160aLnUeZkhthwnYDAvdYfw2U8MFzL5rpKKB8+dpKMc0H8bR /0fPCUxZonQAHaQPNbKhylyl/BJASHCYkf48P6Oc= Date: Wed, 9 Sep 2020 10:23:38 +0200 From: Wolfram Sang To: Evan Nimmo Cc: andriy.shevchenko@linux.intel.com, chris.packham@alliedtelesis.co.nz, jarkko.nikula@linux.intel.com, jdelvare@suse.de, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 1/1] i2c: algo-pca: Reapply i2c bus settings after reset Message-ID: <20200909082338.GC2272@ninjato> References: <20200908203247.14374-1-evan.nimmo@alliedtelesis.co.nz> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="kVXhAStRUZ/+rrGn" Content-Disposition: inline In-Reply-To: <20200908203247.14374-1-evan.nimmo@alliedtelesis.co.nz> 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 --kVXhAStRUZ/+rrGn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Sep 09, 2020 at 08:32:47AM +1200, Evan Nimmo wrote: > If something goes wrong (such as the SCL being stuck low) then we need > to reset the PCA chip. The issue with this is that on reset we lose all > config settings and the chip ends up in a disabled state which results > in a lock up/high CPU usage. We need to re-apply any configuration that > had previously been set and re-enable the chip. >=20 > Signed-off-by: Evan Nimmo > Reviewed-by: Chris Packham > Reviewed-by: Andy Shevchenko > Reviewed-by: Wolfram Sang Applied to for-current, thanks! For the record, were you able to test both, PCA9564 and PCA9665? --kVXhAStRUZ/+rrGn Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAl9YkQoACgkQFA3kzBSg Kbb+QQ/9E7gUmj6g6blrvZZpCuk9+cGTLSBERDhTHqADvFLASAzYwW6sd5ZIMYkI FkYxSngIxqbhxLDPcPJGiTzp2m6+Fg/nkcAOEqePWHxlluhZ09E5pOPznBtdaoPa OuXSi60LuHk8S9tUluox2UbHohlVOJ46gMtbzT7bW2/tcer3WL+I5Q1XHTqIsE9w bA7xZStj03hto3GHT+gB9O2HjF/dgnkUSqAIkX/mlGj2RGenfpxAmuYeo7D87ozK Br+1nb9ZiqYNdawSRXoI2xyvtuFkCNGUq+YWbwJYqHFiICdz7Q2+0mJk+uRqPqdk XhMfmzc6OvFrqNLOw+o5Vd6m2INiLdo9dHtiWzT1B4eujliqZpfZ0ky1cCwNXU3Q VojyoJ1uaX+PgdeAl4IczCDPrBv6dvz7nXo4bj03Vjdhzce40RpFXn3tfs05idnR fciO//UlJNdjk2FR3qaK5dWWLGANrKtPcW+y7BXr5BNgMHBRXeUg+3g5pjrw0eg6 JSBud0OsqCCZv2V3Angg5pQI2q+FmSMW7q48MZJzNUmg8V7UI1D4SVu62Nf8mVDO hluoM80Yfqs1PnXjQP3lqEQKSV35HOUMR95Hb7/r4oPsvAr6VB4EFwuRm7Hqit/v fQpVPJ3cyjJP7GWPP26um0SLLz+F2xe9urjQLZ3FakaiY7fpFIY= =7ey7 -----END PGP SIGNATURE----- --kVXhAStRUZ/+rrGn--