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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 CBAAEC4360C for ; Fri, 27 Sep 2019 12:59:34 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 589E921850 for ; Fri, 27 Sep 2019 12:59:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="GL74/W3K" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 589E921850 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZnlnbDgb/gxWW8TLaflr//PYH2ZzkRixJgKUYB7cH9M=; b=GL74/W3Ku414/u nimTqtJOUzWRoVdSmOdqFPNoSOp/i2rMY7el2i5xE906Fw2RBnYgGtTnlXFhLko1AONjEedSITSuN NtrtkTjIM8zNaMcI5aLPpeFiaJVGjwZYTJqA0+AGkcWOXAsdZYegcPaIrAOxX7YGOKql2GbAsSBu0 5CwOqOCqMhWX444bmEB4XCngL8mykwTsBIvzEelCzltm1WHfJmqnsR18oTag5A3Q5yfSzHDDmJLCh AXmVQGXzFeZPbIQ8CeeosdrUWu5LfXfflV4Ta578CVwDv/khWvbpCQLlM4bSqBiE79hoJUuWI37gR auQcDOqRx3vPIMkG3YVQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDpqJ-0000MC-Kv; Fri, 27 Sep 2019 12:59:27 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iDpqB-0000Dt-Au for linux-arm-kernel@lists.infradead.org; Fri, 27 Sep 2019 12:59:20 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 49A751000; Fri, 27 Sep 2019 05:59:16 -0700 (PDT) Received: from bogus (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 10C053F67D; Fri, 27 Sep 2019 05:59:14 -0700 (PDT) Date: Fri, 27 Sep 2019 13:59:12 +0100 From: Sudeep Holla To: Benjamin GAIGNARD Subject: Re: [PATCH] ARM: dts: stm32: Enable high resolution timer Message-ID: <20190927125912.GB8704@bogus> References: <20190927084819.645-1-benjamin.gaignard@st.com> <341949c8-7864-5d65-2797-988022724a4c@st.com> <69af57d1-13a9-9e35-78f2-4a0d17bdaf6d@st.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <69af57d1-13a9-9e35-78f2-4a0d17bdaf6d@st.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190927_055919_431114_390FB143 X-CRM114-Status: GOOD ( 10.18 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "mark.rutland@arm.com" , "devicetree@vger.kernel.org" , Alexandre TORGUE , Marc Zyngier , "linux-kernel@vger.kernel.org" , "robh+dt@kernel.org" , "linux-stm32@st-md-mailman.stormreply.com" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Sep 27, 2019 at 12:44:55PM +0000, Benjamin GAIGNARD wrote: [...] > > Even in low-power modes this timer is always powered and clocked so it > is working fine. > Is that tested ? I see only cpu_{on,off} available on this platform with PSCI v0.1. Did you add cpu_suspend, idle-states and then gave it a spin ? Or do you have some other idle driver with which this is tested ? Also I don't understand how "always-on" is linked to hrtimer. Always on timers are just selected to be broadcast timer without sacrificing(simply keeping) a cpu to be always active for broadcast purposes. -- Regards, Sudeep _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel