From patchwork Thu Jul 20 05:40:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 705216 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 2C3AAEB64DD for ; Thu, 20 Jul 2023 05:41:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229685AbjGTFle (ORCPT ); Thu, 20 Jul 2023 01:41:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229570AbjGTFld (ORCPT ); Thu, 20 Jul 2023 01:41:33 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54E6B1726 for ; Wed, 19 Jul 2023 22:41:29 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-1b8bbce9980so2171915ad.2 for ; Wed, 19 Jul 2023 22:41:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1689831689; x=1690436489; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=WN6RnkgIzdaal19YY8XLdqCtBwmPCaI6lFevgwA6NkQ=; b=QcYN2iEFkUyQ9vHTSJINfTdF7Du3vqHm7+OJIxMyIcPuF8wdIC66YH1vt5jWCRjYlh JmwoX5r4Ob1wCA6nTd5XkFYt85qKAzVnQj7l9EuEgtjPUAtwq+glNlKsOdi0NcrE8EMc bWw1W7Chzo8CtMEmzQTqJzOctMJj7KnlCXZK3l4/zZlJfaj5v2XQa0OOdjZA5QD4OhaN NtOmAPtb9Evw/eRaNG1HSbHPnl2xxUJj5l657HC355NXs7jc5i8/9W/edxqDiY97snMv udRbCcszreDVjxnanciO2otrhctaRybcyMfqRSHbc4TAg0mFufQ/FYJL5qvGOVh4TPS8 jVyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689831689; x=1690436489; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=WN6RnkgIzdaal19YY8XLdqCtBwmPCaI6lFevgwA6NkQ=; b=d7rHw2OVrFx7K7MdQMw45x54O6E2YqPxS5M2g7AsCk+T4ghaXEcKYET9het739/qXX vxG7QdG+LsBKnrO+YbDRzMRdwY8ZBLRgIdMyK/SDAi3EJiKRn3NIcKWM02an0jMC21hO dmnku0sDaXHeRnjvlAgCQCpAPqvoWup0eXisdTinfYMh5s5YGr6aLF83qqbipF7IE6Vj jDQQS/2FG71hZDDis89YkrI4N9Q4OOHFIlu5VDSSP3edwdp2gQnaDLCG6CbTDI3gufBh 6a0i7m6rKzV0nSgb9gmfWTX3KVbuFxji1wVOlXEjBIzkCgqeX8/Khag9hQwSURDNe33u enQA== X-Gm-Message-State: ABy/qLZcdu5Ua4IHtYO4HLuc1AJwbAYiIzPTzaxFBNG+10rHXD7c3Wgq QWZZf0MOhoVMS+Hl/Zdwk1y4 X-Google-Smtp-Source: APBJJlF1woeafM7N5JSQiQHje6/huLkPMe/UguooncmqloYSF3r+Ni7Qp6cwpNBSwGU8Fj3qkHdVZw== X-Received: by 2002:a17:903:26c5:b0:1b8:5735:2850 with SMTP id jg5-20020a17090326c500b001b857352850mr3799158plb.32.1689831688756; Wed, 19 Jul 2023 22:41:28 -0700 (PDT) Received: from localhost.localdomain ([117.206.119.70]) by smtp.gmail.com with ESMTPSA id r2-20020a170902be0200b001b85bb5fd77sm263367pls.119.2023.07.19.22.41.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jul 2023 22:41:28 -0700 (PDT) From: Manivannan Sadhasivam To: vireshk@kernel.org, nm@ti.com, sboyd@kernel.org, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, cw00.choi@samsung.com, andersson@kernel.org, konrad.dybcio@linaro.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jejb@linux.ibm.com, martin.petersen@oracle.com Cc: alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, linux-scsi@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, quic_asutoshd@quicinc.com, quic_cang@quicinc.com, quic_nitirawa@quicinc.com, quic_narepall@quicinc.com, quic_bhaskarv@quicinc.com, quic_richardp@quicinc.com, quic_nguyenb@quicinc.com, quic_ziqichen@quicinc.com, bmasney@redhat.com, krzysztof.kozlowski@linaro.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH v2 00/15] UFS: Add OPP and interconnect support Date: Thu, 20 Jul 2023 11:10:45 +0530 Message-Id: <20230720054100.9940-1-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Hi, This series adds OPP (Operating Points) support to UFSHCD driver and interconnect support to Qcom UFS driver. Motivation behind adding OPP support is to scale both clocks as well as regulators/performance state dynamically. Currently, UFSHCD just scales clock frequency during runtime with the help of "freq-table-hz" property defined in devicetree. With the addition of OPP tables in devicetree (as done for Qcom SDM845 and SM8250 SoCs in this series) UFSHCD can now scale both clocks and performance state of power domain which helps in power saving. For the addition of OPP support to UFSHCD, there are changes required to the OPP framework and devfreq drivers which are also added in this series. Finally, interconnect support is added to Qcom UFS driver for scaling the interconnect path dynamically. This is required to avoid boot crash in recent SoCs and also to save power during runtime. More information is available in patch 13/13. Credits ======= This series is a continuation of previous work by Krzysztof Kozlowski [1] and Brian Masney [2]. Ideally, this could've split into two series (OPP and interconnect) but since there will be a dependency in the devicetree, I decided to keep them in a single series. Testing ======= This series is tested on 96Boards RB3 (SDM845 SoC) and RB5 (SM8250 SoC) development boards. Merging Strategy ================ An immutable branch might be required between OPP and SCSI trees because of the API dependency (devfreq too). And I leave it up to the maintainers to decide. Thanks, Mani [1] https://lore.kernel.org/all/20220513061347.46480-1-krzysztof.kozlowski@linaro.org/ [2] https://lore.kernel.org/all/20221117104957.254648-1-bmasney@redhat.com/ Changes in v2: * Added more description to the bindings patch 2/15 * Fixed dev_pm_opp_put() usage in patch 10/15 * Added a new patch for adding enums for UFS lanes 14/15 * Changed the icc variables to mem_bw and cfg_bw and used the enums for gears and lanes in bw_table * Collected review tags * Added SCSI list and folks * Removed duplicate patches Krzysztof Kozlowski (2): dt-bindings: ufs: common: add OPP table arm64: dts: qcom: sdm845: Add OPP table support to UFSHC Manivannan Sadhasivam (13): dt-bindings: opp: Increase maxItems for opp-hz property arm64: dts: qcom: sdm845: Add missing RPMh power domain to GCC arm64: dts: qcom: sdm845: Fix the min frequency of "ice_core_clk" arm64: dts: qcom: sm8250: Add OPP table support to UFSHC OPP: Introduce dev_pm_opp_find_freq_{ceil/floor}_indexed() APIs OPP: Introduce dev_pm_opp_get_freq_indexed() API PM / devfreq: Switch to dev_pm_opp_find_freq_{ceil/floor}_indexed() APIs scsi: ufs: core: Add OPP support for scaling clocks and regulators scsi: ufs: host: Add support for parsing OPP arm64: dts: qcom: sdm845: Add interconnect paths to UFSHC arm64: dts: qcom: sm8250: Add interconnect paths to UFSHC scsi: ufs: core: Add enums for UFS lanes scsi: ufs: qcom: Add support for scaling interconnects .../devicetree/bindings/opp/opp-v2-base.yaml | 2 +- .../devicetree/bindings/ufs/ufs-common.yaml | 34 +++- arch/arm64/boot/dts/qcom/sdm845.dtsi | 47 ++++-- arch/arm64/boot/dts/qcom/sm8250.dtsi | 43 +++-- drivers/devfreq/devfreq.c | 14 +- drivers/opp/core.c | 76 +++++++++ drivers/ufs/core/ufshcd.c | 148 +++++++++++++----- drivers/ufs/host/ufs-qcom.c | 131 +++++++++++++++- drivers/ufs/host/ufs-qcom.h | 3 + drivers/ufs/host/ufshcd-pltfrm.c | 120 +++++++++++++- include/linux/pm_opp.h | 26 +++ include/ufs/ufshcd.h | 4 + include/ufs/unipro.h | 6 + 13 files changed, 586 insertions(+), 68 deletions(-)