From patchwork Wed Aug 28 12:28:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 11118867 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8F3F4112C for ; Wed, 28 Aug 2019 12:31:22 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6E1BB22CED for ; Wed, 28 Aug 2019 12:31:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="oKp+2ZFd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6E1BB22CED 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+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.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=V1tj9NHd/vKlSrRvP9wR/HWZKoG2QXYO4Y2yP25RWUU=; b=oKp+2ZFdPmIZ8T MiGKhkLybSGAJ6vxmTBC5DZlgY25V9b/LMGmxciQnoa/PZ1F/9X6oKgBze9ScqM1SHhi8XdqM/zZu npwgLF7IV1iT7vlgFqye8BYGxvvysc7EOTq0IU9LGNQ9Fxbw+Jix7ExrIlr3NgIkytRjGXuNZ3Clr 4qL/rjeCxzYIQnf0OMDtuUbD9YFMHzIzIlM2oO0Jhjl6gJwUC53VZoO3NDv5yI96FQJKE7F9813lE 5IbYqGfXOa7ewgTgBQhv2xVhk5Bv9mXo0jhqpdzFv+b95O8NW54Sz5vXmeJu37V4kY315qbM8+8lI FErdNN5fHfoVcq/irO/Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i2x6f-0005HF-Dv; Wed, 28 Aug 2019 12:31:21 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i2x4Y-0002X3-4H; Wed, 28 Aug 2019 12:29:13 +0000 X-UUID: 896ee1e3061f4c11ade5f5625e34623c-20190828 X-UUID: 896ee1e3061f4c11ade5f5625e34623c-20190828 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 2085520933; Wed, 28 Aug 2019 04:29:13 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 28 Aug 2019 05:29:11 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 28 Aug 2019 20:28:58 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 28 Aug 2019 20:28:58 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Viresh Kumar , Stephen Boyd , Ryan Case Subject: [PATCH V3 00/10] Add driver for dvfsrc, support for active state of scpsys Date: Wed, 28 Aug 2019 20:28:38 +0800 Message-ID: <1566995328-15158-1-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-20190828_052910_208052_2A5EE581 X-CRM114-Status: GOOD ( 14.85 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines 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: James Liao , Weiyi Lu , Nicolas Boichat , linux-kernel@vger.kernel.org, Fan Chen , devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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 2 frameworks basically: 1. interconnect framework: to aggregate the bandwidth requirements from different clients [1] https://patchwork.kernel.org/cover/10766329/ Below is the emi bandwidth map of mt8183. 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 ICC provider ICC Nodes ---- ---- --------- |CPU | |--->|VPU | ----- | |-----> ---- | ---- |DRAM |--|DRAM | ---- | ---- | |--|scheduler|----->|GPU | |--->|DISP| | |--|(EMI) | ---- | ---- | |--| | ----- | ---- ----- | |----->|MMSYS|--|--->|VDEC| --------- ----- | ---- /|\ | ---- |change DRAM freq |--->|VENC| ---------- | ---- | DVFSR | | | | | ---- ---------- |--->|IMG | | ---- | ---- |--->|CAM | ---- 2. Active state management of power domains[1]: to handle the operating voltage opp requirement from different power domains [2] https://lwn.net/Articles/744047/ Changes in RFC 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) RFC V2: https://lore.kernel.org/patchwork/patch/1068113/ RFC V1: https://lore.kernel.org/patchwork/cover/1028535/ Henry Chen (10): dt-bindings: soc: Add dvfsrc driver bindings dt-bindings: soc: Add opp table on scpsys bindings soc: mediatek: add support for the performance state arm64: dts: mt8183: add performance state support of scpsys soc: mediatek: add header for mediatek SIP interface soc: mediatek: add MT8183 dvfsrc support arm64: dts: mt8183: add dvfsrc related nodes dt-bindings: interconnect: add MT8183 interconnect dt-bindings interconnect: mediatek: Add mt8183 interconnect provider driver arm64: dts: mt8183: Add interconnect provider DT nodes .../devicetree/bindings/soc/mediatek/dvfsrc.txt | 32 ++ .../devicetree/bindings/soc/mediatek/scpsys.txt | 42 +++ arch/arm64/boot/dts/mediatek/mt8183.dtsi | 33 ++ drivers/interconnect/Kconfig | 1 + drivers/interconnect/Makefile | 1 + drivers/interconnect/mediatek/Kconfig | 13 + drivers/interconnect/mediatek/Makefile | 3 + drivers/interconnect/mediatek/mtk-emi.c | 246 ++++++++++++++ drivers/soc/mediatek/Kconfig | 15 + drivers/soc/mediatek/Makefile | 1 + drivers/soc/mediatek/mtk-dvfsrc.c | 374 +++++++++++++++++++++ drivers/soc/mediatek/mtk-scpsys.c | 58 ++++ drivers/soc/mediatek/mtk-scpsys.h | 22 ++ include/dt-bindings/interconnect/mtk,mt8183-emi.h | 18 + include/dt-bindings/soc/mtk,dvfsrc.h | 14 + include/soc/mediatek/mtk_dvfsrc.h | 22 ++ include/soc/mediatek/mtk_sip.h | 17 + 17 files changed, 912 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt create mode 100644 drivers/interconnect/mediatek/Kconfig create mode 100644 drivers/interconnect/mediatek/Makefile create mode 100644 drivers/interconnect/mediatek/mtk-emi.c create mode 100644 drivers/soc/mediatek/mtk-dvfsrc.c create mode 100644 drivers/soc/mediatek/mtk-scpsys.h create mode 100644 include/dt-bindings/interconnect/mtk,mt8183-emi.h create mode 100644 include/dt-bindings/soc/mtk,dvfsrc.h create mode 100644 include/soc/mediatek/mtk_dvfsrc.h create mode 100644 include/soc/mediatek/mtk_sip.h