From patchwork Thu Feb 24 08:11:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 546377 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CE473C4321E for ; Thu, 24 Feb 2022 08:13:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231691AbiBXINs (ORCPT ); Thu, 24 Feb 2022 03:13:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39820 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231654AbiBXIM0 (ORCPT ); Thu, 24 Feb 2022 03:12:26 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id BC35D275CF; Thu, 24 Feb 2022 00:11:40 -0800 (PST) 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 4B7D41063; Thu, 24 Feb 2022 00:11:40 -0800 (PST) Received: from e123648.arm.com (unknown [10.57.8.211]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 1801B3F70D; Thu, 24 Feb 2022 00:11:37 -0800 (PST) From: Lukasz Luba To: linux-kernel@vger.kernel.org Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, daniel.lezcano@linaro.org, nm@ti.com, sboyd@kernel.org, mka@chromium.org, dianders@chromium.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v3 0/4] Introduce "opp-microwatt" and 'advanced' Energy Model from DT Date: Thu, 24 Feb 2022 08:11:27 +0000 Message-Id: <20220224081131.27282-1-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Hi all, This patch set solves a few issues: 1. It allows to register EM from DT, when the voltage information is not available. (Some background of the issues present on Chromebook devices can be checked at [1].) 2. It allows to register 'advanced' EM from the DT, which is more accurate and reflects total power (dynamic + static). Implementation details: Existing machinery in the OPP framework now handles "opp-microwatt", similarly to "opp-microamp". It also has helper exported function to get power from OPP. For the EM, it adds a new callback in OPP framework to use this new API and read power while having an opp pointer. It's agreed to work with OPP-v2. Comments, suggestions are very welcome. changelog: v3: - added generic support in the OPP for "opp-microwatt" - renamed _of_has_opp_microwatt_property() and return bool from it - simplified _of_has_opp_microwatt_property() just checking 1st opp's power - squashed the return ret; into return em_dev_register_perf_domain(); - added EM documentation update patch v2 [2] Regards, Lukasz Luba [1] https://lore.kernel.org/linux-pm/20220207073036.14901-2-lukasz.luba@arm.com/ [2] https://lore.kernel.org/linux-pm/20220222140746.12293-1-lukasz.luba@arm.com/ Lukasz Luba (4): dt-bindings: opp: Add "opp-microwatt" entry in the OPP OPP: Add "opp-microwatt" supporting code OPP: Add support of "opp-microwatt" for advanced EM registration Documentation: EM: Describe new registration method using DT .../devicetree/bindings/opp/opp-v2-base.yaml | 15 +++ Documentation/power/energy-model.rst | 10 ++ drivers/opp/core.c | 20 ++++ drivers/opp/of.c | 105 +++++++++++++++++- include/linux/pm_opp.h | 12 +- 5 files changed, 159 insertions(+), 3 deletions(-)