From patchwork Mon Aug 9 19:15:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thara Gopinath X-Patchwork-Id: 493893 Delivered-To: patch@linaro.org Received: by 2002:a05:6638:396:0:0:0:0 with SMTP id y22csp3207850jap; Mon, 9 Aug 2021 12:16:09 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxba1teRoNx02jAuiNrPrCbS4n8A0QgudintOJNv+rH5NUNEPolQ82YRk3MziLrRSEz96zN X-Received: by 2002:a17:906:6dc1:: with SMTP id j1mr24341655ejt.324.1628536569143; Mon, 09 Aug 2021 12:16:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1628536569; cv=none; d=google.com; s=arc-20160816; b=LmCvMtNuhhkjpjWKk/ek+qjwTEUHoEBt6/evPzOSTLejDxSH8SJlkn6QZGWPw3NJ1R 9U2Ple033KGS1PE3W8Agbz5/sSvBFqbGi/69Ts3fbabYo5N8OezV3vrDIeulc2eDcqLU 9DrU7noXRVplYNiNiJUNEJ17covwutPhZGltYa/Y9rSqUnHn1uR/Qs9+Xj43QSPvkXhz 549VF1atjGtERWQDANeBY54xupenyUdNgOjPTUGJF7+9TYHmOMB0erID4DYK86EntuKo gVcKnxV5hVs02t/qd8m2v+hG47UwETnTe36jSRWcFs+1CmvGQUFamktgYAz8GgkXSfx/ F97A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=eNbXDUTDq2s+IaNPv/bGr5+o3NzigRzKhkvSyNsXN88=; b=Za2kA5/T443JLS5pwdLn74hCf/44we3ZFn8tMs9+f7lOG8z+FbpUdMo24tHspvCDA+ idD5UjG53i7thICFrgU1Vea35GNpxFZ/LPqqreAyH4ldlm7iSki6KubPvbrxwyIs2R9B 470UX9LuouJzKSSzfgnYB9krhs0b2m3KiVoRsbruBBlN6ZFzymDFNjztH70jvdKO2IMu 65sCbnlcO/WRWZuLA2FSXrDdTfHR3oVsopRpk1MbgkXWE6Kmuzd5wamWlsbizqrebjcm z79XuvwfpNgkIHKuAr4dFL6YkGZc9bx8hbU43RCX5jI9kj0ef76uFeoVv8Yc8ZBE2GYQ y93A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=zZQPvJUN; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id la20si20622160ejc.685.2021.08.09.12.16.08; Mon, 09 Aug 2021 12:16:09 -0700 (PDT) Received-SPF: pass (google.com: domain of devicetree-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=@linaro.org header.s=google header.b=zZQPvJUN; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235976AbhHITQ2 (ORCPT + 7 others); Mon, 9 Aug 2021 15:16:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235907AbhHITQ2 (ORCPT ); Mon, 9 Aug 2021 15:16:28 -0400 Received: from mail-qv1-xf2c.google.com (mail-qv1-xf2c.google.com [IPv6:2607:f8b0:4864:20::f2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB1C3C061796 for ; Mon, 9 Aug 2021 12:16:07 -0700 (PDT) Received: by mail-qv1-xf2c.google.com with SMTP id js7so9573899qvb.4 for ; Mon, 09 Aug 2021 12:16:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=eNbXDUTDq2s+IaNPv/bGr5+o3NzigRzKhkvSyNsXN88=; b=zZQPvJUNvjfkbD+0j59Ay36EtKRba9d/7e1T3pbuBzJksLb46H1gcjWWVQ3JVhcwfb ZQopmiE3aK1C8xme5PRrrW0HvQC7Ps+8JhK8LoEP+io9kR1AyQxjTNwHP7AmFzf+gpN7 M362d3zSAxYXoVreM6mKyTADldvuG58E/gaA3E3YYjdR7/P35nL/Hy1RbxQRNBqHFOrx I1FLsmXvBQaZPRkdVNTAOn3huJoiCmrEzqcaL7wpf6h523pWon2pj2As/JsSPJ0ZNZnd dR5jD5x5+GxwsqCHU9S5tuByklaS/zZ0j/jAAJsYFvuI6HVO0SmeTM7Oocj0sUTMYG0N Cjpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=eNbXDUTDq2s+IaNPv/bGr5+o3NzigRzKhkvSyNsXN88=; b=E6wcORn3YMM7UtuDvxB14J3xMvl+wJGa7WAYvQj9dns4N4jgPR3hmz+F5qjD9rznLu +V8w7BFLlRfOUoT13ow99Fe6mrYhe8GjaIVvQWGWy+8mDGkssC3BcxYqsjwKW0+aPK1l QqsX5z/v1oa5LREuKkpK17UT/xjzePBReaGWPb3hwNkPR3d3hefMxvl+NSpf/B34AuNv boKbMujRNhVdaNrsix5GBzA8rB/osoEySsxXiko3P522ZahZJ5JQCI41n7heh3ywGFIj XzllJij16tijhdu2At76RQc6tNkxtACPaEeyGHUkXxLob4C2yZx4nqRBb3AqCqgFjac+ 6OUg== X-Gm-Message-State: AOAM531bY2j9TI7ZznkACAmv8kkoUMBuQRfntlp8fqdXz7ACAVWg0+M9 ebyYR4b23GKTV9M6lrnYukJbOQ== X-Received: by 2002:a05:6214:570:: with SMTP id cj16mr4212867qvb.41.1628536566949; Mon, 09 Aug 2021 12:16:06 -0700 (PDT) Received: from pop-os.fios-router.home (pool-71-163-245-5.washdc.fios.verizon.net. [71.163.245.5]) by smtp.googlemail.com with ESMTPSA id n14sm7303398qti.47.2021.08.09.12.16.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Aug 2021 12:16:06 -0700 (PDT) From: Thara Gopinath To: agross@kernel.org, bjorn.andersson@linaro.org, rui.zhang@intel.com, daniel.lezcano@linaro.org, viresh.kumar@linaro.org, rjw@rjwysocki.net, robh+dt@kernel.org Cc: steev@kali.org, tdas@codeaurora.org, mka@chromium.org, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [Patch v5 0/6] Introduce LMh driver for Qualcomm SoCs Date: Mon, 9 Aug 2021 15:15:58 -0400 Message-Id: <20210809191605.3742979-1-thara.gopinath@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Limits Management Hardware(LMh) is a hardware infrastructure on some Qualcomm SoCs that can enforce temperature and current limits as programmed by software for certain IPs like CPU. On many newer SoCs LMh is configured by firmware/TZ and no programming is needed from the kernel side. But on certain SoCs like sdm845 the firmware does not do a complete programming of the h/w block. On such SoCs kernel software has to explicitly set up the temperature limits and turn on various monitoring and enforcing algorithms on the hardware. Introduce support for enabling and programming various limit settings and monitoring capabilities of Limits Management Hardware(LMh) associated with cpu clusters. Also introduce support in cpufreq hardware driver to monitor the interrupt associated with cpu frequency throttling so that this information can be conveyed to the schdeuler via thermal pressure interface. With this patch series following cpu performance improvement(30-70%) is observed on sdm845. The reasoning here is that without LMh being programmed properly from the kernel, the default settings were enabling thermal mitigation for CPUs at too low a temperature (around 70-75 degree C). This in turn meant that many a time CPUs were never actually allowed to hit the maximum possible/required frequencies. UnixBench whets and dhry (./Run whets dhry) System Benchmarks Index Score Without LMh Support With LMh Support 1 copy test 1353.7 1773.2 8 copy tests 4473.6 7402.3 Sysbench cpu sysbench cpu --threads=8 --time=60 --cpu-max-prime=100000 run Without LMh Support With LMh Support Events per second 355 614 Avg Latency(ms) 21.84 13.02 v4->v5: - Rebased to v5.14-rc5. v3->v4: - Rebased to v5.14-rc2. v2->v3: - Included patch adding dt binding documentation for LMh nodes. - Rebased to v5.13 Thara Gopinath (6): firmware: qcom_scm: Introduce SCM calls to access LMh thermal: qcom: Add support for LMh driver cpufreq: qcom-cpufreq-hw: Add dcvs interrupt support arm64: dts: qcom: sdm45: Add support for LMh node arm64: dts: qcom: sdm845: Remove cpufreq cooling devices for CPU thermal zones dt-bindings: thermal: Add dt binding for QCOM LMh .../devicetree/bindings/thermal/qcom-lmh.yaml | 82 +++++++ arch/arm64/boot/dts/qcom/sdm845.dtsi | 162 ++---------- drivers/cpufreq/qcom-cpufreq-hw.c | 147 +++++++++++ drivers/firmware/qcom_scm.c | 58 +++++ drivers/firmware/qcom_scm.h | 4 + drivers/thermal/qcom/Kconfig | 10 + drivers/thermal/qcom/Makefile | 1 + drivers/thermal/qcom/lmh.c | 232 ++++++++++++++++++ include/linux/qcom_scm.h | 14 ++ 9 files changed, 574 insertions(+), 136 deletions(-) create mode 100644 Documentation/devicetree/bindings/thermal/qcom-lmh.yaml create mode 100644 drivers/thermal/qcom/lmh.c -- 2.25.1