From patchwork Wed Jun 22 14:57:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 12890934 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 21CF2CCA47D for ; Wed, 22 Jun 2022 14:59:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=bQGPIMFzIzS1RMLpgc44J+EOjJTDmkhWZdcJiwckWkU=; b=0DKHJuboKnsncL Rx73Dq8AAyLdLiykcoL60FQza3dsUHOkWyWJW2EwtYOAWA3DE8MWITHL3BsD/ZQHcOT4pYtFeD3K7 p6cDtUlHKDlj1kqz79EtunAg6nKDY1lxLlErkIHDmXxtQDbhmadeYabsoMsrSqHFZv1LUqAUWzBU0 dE7NfKdmN4V1nvZlheHEGNOc62dhEdEL54LQZctDMd5nIUT7NiTp+FMPMkXN3U5NQC6eMMlVTsmE1 6yXsGc3Rnxn1i1H9Vyg4D6o3qBjDz7JmgcbSppjjlQn/9H3GchFswzU+8aVohSyPxjqPcVXeiYgt/ 6+7TFMxBo9IlCX7Q4geQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o41oD-00B32g-EW; Wed, 22 Jun 2022 14:58:21 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o41o9-00B2xz-0z; Wed, 22 Jun 2022 14:58:20 +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 5F33213D5; Wed, 22 Jun 2022 07:58:11 -0700 (PDT) Received: from e123648.arm.com (unknown [10.57.38.162]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 6B7AC3F792; Wed, 22 Jun 2022 07:58:08 -0700 (PDT) From: Lukasz Luba To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: daniel.lezcano@linaro.org, amitk@kernel.org, rui.zhang@intel.com, lukasz.luba@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, dietmar.eggemann@arm.com, nm@ti.com, sboyd@kernel.org, sudeep.holla@arm.com, cristian.marussi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/4] Energy Model power in micro-Watts and SCMI v3.1 alignment Date: Wed, 22 Jun 2022 15:57:58 +0100 Message-Id: <20220622145802.13032-1-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220622_075817_147573_206E08DC X-CRM114-Status: UNSURE ( 6.81 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi all, This is a patch set which changes Energy Model power values scale to micro-Watts. It also upgrades the SCMI performance layer + scmi-cpufreq driver to leverage the SCMI v3.1 spec and process micro-Watts power values coming from FW. The higher precision in EM power field solves an issue of a rounding error, which then can be misinterpreted as 'inefficient OPP'. An example rounding issue calculation is present in patch 1/4 description. Regards, Lukasz Luba Lukasz Luba (4): PM: EM: convert power field to micro-Watts precision and align drivers Documentation: EM: Switch to micro-Watts scale firmware: arm_scmi: Get detailed power scale from perf cpufreq: scmi: Support the power scale in micro-Watts in SCMI v3.1 Documentation/power/energy-model.rst | 14 +++--- drivers/cpufreq/mediatek-cpufreq-hw.c | 7 +-- drivers/cpufreq/scmi-cpufreq.c | 15 ++++++- drivers/firmware/arm_scmi/perf.c | 18 +++++--- drivers/opp/of.c | 15 ++++--- drivers/powercap/dtpm_cpu.c | 5 +-- drivers/thermal/cpufreq_cooling.c | 13 +++++- drivers/thermal/devfreq_cooling.c | 19 ++++++-- include/linux/energy_model.h | 63 ++++++++++++++++++++------- include/linux/scmi_protocol.h | 8 +++- kernel/power/energy_model.c | 31 ++++++++----- 11 files changed, 146 insertions(+), 62 deletions(-)