From patchwork Fri Jan 8 07:48:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 12005991 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=-12.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 E41CDC433DB for ; Fri, 8 Jan 2021 08:01:04 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 8C295233CF for ; Fri, 8 Jan 2021 08:01:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8C295233CF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject: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=QxswotiVXIA6AUxNZ3nxCmCwoA5aVCf4y+L8fBgIcSA=; b=eNm+EroMEzAHJgFeDLrHC/hvlj d9JSQu7shKPGsaKwkm6xSwGtw1s2WlXDCgNe9cj1tGwPpB4wXxvP+SuKqQUO86NWbYW2CkJM+M4o0 P6YOVmwhp3at1rQ8wLRLnWgtTJod3juojJveqygixPteT4RpKbFvTKzNwTYVAIlCAWwP2ljY+5o5K sC58jr1/uEa4RurrakmZw5nlXxwY6M3PBVYEXWeKfGvTc8wVjhINh70KAwyYGLxwMeszXAmylw8NA 36FLMPEiS/qF/dMPmYXa4jDWdf3m0c66oSs/Mj7ZBdbCVf4qFvdWpNxZdvgnhlitNhtPOx/nSAO3G KGIMXvgQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kxmfP-0006j2-NT; Fri, 08 Jan 2021 07:58:39 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kxmfI-0006g7-2W; Fri, 08 Jan 2021 07:58:33 +0000 X-UUID: 2a7f898b84d142788b19c11d29cefb46-20210107 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=mQDTsf85sxKMyr//BzIXr0FZU0fB2dVZy+7w0ZmlF8M=; b=VyGv6tVJKaQ5cl0yWsSa6RlNqN/qMW6TXc6AXyCyBqpEGPewfX+MZZ/d0+NSHUjvAEtLtupAS+QF+mfameSdSeEL3QlPw77RM+8tlzp39Ceghl1MN1aa4hvt+8sH0YBAWCvDnnwe2LXEoIWuMc1EDkrDBqbhGZR58Td5WIddHco=; X-UUID: 2a7f898b84d142788b19c11d29cefb46-20210107 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 450130390; Thu, 07 Jan 2021 23:58:28 -0800 Received: from MTKMBS02N1.mediatek.inc (172.21.101.77) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 7 Jan 2021 23:48:26 -0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 8 Jan 2021 15:48:19 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 8 Jan 2021 15:48:18 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Stephen Boyd , Ryan Case , Mark Brown Subject: [PATCH V7 00/13] Add driver for dvfsrc, support for active state of scpsys Date: Fri, 8 Jan 2021 15:48:02 +0800 Message-ID: <1610092095-5113-1-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210108_025832_266148_1A793347 X-CRM114-Status: GOOD ( 17.49 ) 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 , Nicolas Boichat , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Fan Chen , linux-mediatek@lists.infradead.org, Arvin Wang , James Liao , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series is based on v5.11-rc1. The patchsets add support for MediaTek hardware module named DVFSRC (dynamic voltage and frequency scaling resource collector). The DVFSRC is a HW module which is used to collect all the requests from both software and hardware and turn into the decision of minimum operating voltage and minimum DRAM frequency to fulfill those requests. So, This series is to implement the dvfsrc driver to collect all the requests of operating voltage or DRAM bandwidth from other device drivers likes GPU/Camera through 3 frameworks basically: 1. interconnect framework: to aggregate the bandwidth requirements from different clients [1] https://patchwork.kernel.org/cover/10766329/ There has a hw module "DRAM scheduler", which used to control the throughput. The DVFSRC will collect forecast data of dram bandwidth from SW consumers(camera/gpu...), and according the forecast to change the DRAM frequency 2. Regualtor framework: to handle the operating voltage requirement from user or cosumer which not belong any power domain Changes in V7: * Fixed the dt_binding_check error of dvfsrc.yaml. (Rob) * Fixed the checkpatch complains of "Signed-off-by: email name mismatch". (Georgi) * Fixed coding style of interconnect driver. (Georgi) * Upate comment of the years to 2021. (Georgi) Changes in V6: * Remove the performace state support, because the request from consumer can be replaced by using interconnect and regulator framework. * Update the DT patches and convert them to DT schema. (Georgi) * Modify the comment format and coding style. (Mark) Changes in V5: * Support more platform mt6873/mt8192 * Drop the compatible and interconnect provider node and make the parent node an interconnect provider. (Rob/Georgi) * Make modification of interconnect driver from coding suggestion. (Georgi) * Move interconnect diagram into the commit text of patch. (Georgi) * Register the interconnect provider as a platform sub-device. (Georgi) Changes in V4: * Add acked TAG on dt-bindings patches. (Rob) * Declaration of emi_icc_aggregate since the prototype of aggregate function has changed meanwhile. (Georgi) * Used emi_icc_remove instead of icc_provider_del on probe. (Georgi) * Add dvfsrc regulator driver into series. * Bug fixed of mt8183_get_current_level. * Add mutex protection for pstate operation on dvfsrc_set_performance. Changes in V3: * Remove RFC from the subject prefix of the series * Combine dt-binding patch and move interconnect dt-binding document into dvfsrc. (Rob) * Remove unused header, add unit descirption to the bandwidth, rename compatible name on interconnect driver. (Georgi) * Fixed some coding style: check flow, naming, used readx_poll_timeout on dvfsrc driver. (Ryan) * Rename interconnect driver mt8183.c to mtk-emi.c * Rename interconnect header mtk,mt8183.h to mtk,emi.h * mtk-scpsys.c: Add opp table check first to avoid OF runtime parse failed Changes in RFC V2: * Remove the DT property dram_type. (Rob) * Used generic dts property 'opp-level' to get the performace state. (Stephen) * Remove unecessary dependency config on Kconfig. (Stephen) * Remove unused header file, fixed some coding style issue, typo, error handling on dvfsrc driver. (Nicolas/Stephen) * Remove irq handler on dvfsrc driver. (Stephen) * Remove init table on dvfsrc driver, combine hw init on trustzone. * Add interconnect support of mt8183 to aggregate the emi bandwidth. (Georgi) V6: https://patchwork.kernel.org/project/linux-mediatek/list/?series=406077 V5: https://patchwork.kernel.org/project/linux-mediatek/list/?series=348065 V4: https://lore.kernel.org/patchwork/cover/1209284/ V3: https://patchwork.kernel.org/cover/11118867/ RFC V2: https://lore.kernel.org/patchwork/patch/1068113/ RFC V1: https://lore.kernel.org/patchwork/cover/1028535/