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[23.128.96.18]) by mx.google.com with ESMTP id u15si107991iot.89.2021.09.01.16.51.10; Wed, 01 Sep 2021 16:51:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@jms.id.au header.s=google header.b=ZFxopLRO; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242962AbhIAXje (ORCPT + 99 others); Wed, 1 Sep 2021 19:39:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44660 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240154AbhIAXj3 (ORCPT ); Wed, 1 Sep 2021 19:39:29 -0400 Received: from mail-qt1-x833.google.com (mail-qt1-x833.google.com [IPv6:2607:f8b0:4864:20::833]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6CB2C061575 for ; Wed, 1 Sep 2021 16:38:31 -0700 (PDT) Received: by mail-qt1-x833.google.com with SMTP id l24so61119qtj.4 for ; Wed, 01 Sep 2021 16:38:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jms.id.au; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=Tir4KIBG3dCXrYCogu3jCVBol3D5m4vSoqwXylYsFiE=; b=ZFxopLROBmPnRktluWCNeHM7I+tzgt0S8c+smEH9kAmM90pFOCGKf1cIwwgMHSu538 x5dpxPKToHQXd0jahsEVexq7B6Euqq7HxA4T2jVYJ5etI5BOYslvB2TBtBiDxFWQvCHb N866HjIeeEcbl66YkNwyWYGXv+Qhb1lb9lu2g= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=Tir4KIBG3dCXrYCogu3jCVBol3D5m4vSoqwXylYsFiE=; b=FgnAQEpFyErvPNhn2EY6cqYz8etKWWodfF2IpJ3/0/ckQ+qTgZZadD0018GAfyEU5+ kpqTD25QyPRm+wNvH+TnAybN5W04lq7TInll3Ohm3Q2RkVN68OYKaURN1IVOVkQPCrCH LpLHV2bQ0Zjv4y7wW76ws5u2ODGqip2wz9K8QoKgbNDkqaS07Qf9aZ0gL5IGeLNXjL6e QC1RhoTSb53ulX0qDSGunDDG38e6AtxV2g08MHRzscQK4Op8tTag7Lt9lmVpC7LhwDPJ QfPHabPv0NX3zYc658wIcv2mNJ6BkfkkLwyyUBsceZTxTIiNE4xggD9gN+/7ptEU3wEY 54GA== X-Gm-Message-State: AOAM530NRrpQeXbIjkcEFz+sCqluOz6l8Qeg5RIjV+4/q8CNP/dCOYqk rJuCjdDuQhdhZM466OLGHMwKJ0cYrwXINz337vE= X-Received: by 2002:ac8:4684:: with SMTP id g4mr322134qto.290.1630539510944; Wed, 01 Sep 2021 16:38:30 -0700 (PDT) MIME-Version: 1.0 References: <20210724224424.2085404-1-linus.walleij@linaro.org> <20210724224424.2085404-2-linus.walleij@linaro.org> <20210821042010.GA1759866@roeck-us.net> <4d87c7af-d2e3-9456-130a-b35b507ff3a2@roeck-us.net> <567a65a8-077b-7394-c8e2-dbd9f063e02c@kaod.org> In-Reply-To: <567a65a8-077b-7394-c8e2-dbd9f063e02c@kaod.org> From: Joel Stanley Date: Wed, 1 Sep 2021 23:38:19 +0000 Message-ID: Subject: Re: [PATCH 2/2] clocksource/drivers/fttmr010: Be stricter on IRQs To: =?UTF-8?Q?C=C3=A9dric_Le_Goater?= Cc: Guenter Roeck , Linus Walleij , Andrew Jeffery , Daniel Lezcano , Thomas Gleixner , linux-kernel Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 28 Aug 2021 at 08:08, C=C3=A9dric Le Goater wrote: > AFAICT, the ast2600 does not use a fttmr010 clocksource. Correct. When doing bringup of the ast2600, I updated this driver to support the new layout. Only once I'd submitted it did I learn that aspeed preferred to use only the Cortex A7's timer source, and only that source. The armv7 timer can be lost when a core goes into power save mode, but I am told the ast2600 does not implement power saving modes, so we set the always-on property for the arm,armv7-timer. This allows us to use the timer as a clocksource for hrtimers, removing the need to use the fttmr010 driver at all. Cheers, Joel