From patchwork Wed Jan 2 13:43:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 10746411 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AC8541399 for ; Wed, 2 Jan 2019 14:02:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9BB41287DA for ; Wed, 2 Jan 2019 14:02:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8F5B3288AF; Wed, 2 Jan 2019 14:02:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 41B18287DA for ; Wed, 2 Jan 2019 14:02:58 +0000 (UTC) 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:References:In-Reply-To: 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: List-Owner; bh=bS7sxWLfkBsEo4WtJa4WvahMaf8fJWT/MaNFShbfT40=; b=Up3mQFGWHPGTxf 9gEfIGn0tI7bYRsXZxAyciWhaeU2hZN2V/oQ7A9dOBWvovmdr63vtUBT4kxr1AROzcLTiCN6p2oIk ViaiHVDq3RWutNnme4rD+0rbPtkvmmIewo8LKLHbgb3BMcxE8d3aSAe/LPZnSMjgDedxDgWvrpulQ qCSnqF6HySXtw6VM/KwRbZzc+Gv4nTMT4ec2Zq0mhzLezVnPYZzY6yd/d5Waua/iGupwnE3Mnh6lq bk69SoPjMtRzFBoCgJWFzf9N9vJewzNsWTfiObth0n4q4VAZ4Nh/uTZ52VrfcHwV+hMM2ZkwLLcbo IL9o342Ec4uqi2G9vmZg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1geh6m-0001fC-BM; Wed, 02 Jan 2019 14:02:56 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1geh51-00087Y-CF; Wed, 02 Jan 2019 14:01:21 +0000 X-UUID: d23b80df51ea4817aefa0476a1ad62b8-20190102 X-UUID: d23b80df51ea4817aefa0476a1ad62b8-20190102 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 244234613; Wed, 02 Jan 2019 22:00:58 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 2 Jan 2019 22:00:56 +0800 Received: from mtkslt205.mediatek.inc (10.21.15.75) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 2 Jan 2019 22:00:56 +0800 From: Henry Chen To: Viresh Kumar , Stephen Boyd , Rob Herring , Matthias Brugger , Ulf Hansson Subject: [RFC PATCH 1/7] dt-bindings: soc: Add DVFSRC driver bindings Date: Wed, 2 Jan 2019 21:43:58 +0800 Message-ID: <1546436644-19234-2-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1546436644-19234-1-git-send-email-henryc.chen@mediatek.com> References: <1546436644-19234-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: AAA9A09DA6C739B431FC5C1F94D631C049D342526B5E35733391914CED7F060D2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190102_060108_028257_34CB5C27 X-CRM114-Status: GOOD ( 14.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , James Liao , Kees Cook , Weiyi Lu , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Henry Chen , 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 X-Virus-Scanned: ClamAV using ClamSMTP Document the binding for enabling DVFSRC on MediaTek SoC. Signed-off-by: Henry Chen --- .../devicetree/bindings/soc/mediatek/dvfsrc.txt | 26 ++++++++++++++++++++++ include/dt-bindings/soc/mtk,dvfsrc.h | 18 +++++++++++++++ 2 files changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt create mode 100644 include/dt-bindings/soc/mtk,dvfsrc.h diff --git a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt new file mode 100644 index 0000000..402c885 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.txt @@ -0,0 +1,26 @@ +MediaTek DVFSRC Driver + +The Dynamic Voltage and Frequency Scaling Resource Collector (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. + +Required Properties: +- compatible: Should be one of the following + - "mediatek,mt8183-dvfsrc": For MT8183 SoC +- reg: Address range of the DVFSRC unit +- dram_type: Refer to for the + different dram type support. +- clock-names: Must include the following entries: + "dvfsrc": DVFSRC module clock +- clocks: Must contain an entry for each entry in clock-names. + +Example: + + dvfsrc_top@10012000 { + compatible = "mediatek,mt8183-dvfsrc"; + reg = <0 0x10012000 0 0x1000>; + clocks = <&infracfg CLK_INFRA_DVFSRC>; + clock-names = "dvfsrc"; + dram_type = ; + }; diff --git a/include/dt-bindings/soc/mtk,dvfsrc.h b/include/dt-bindings/soc/mtk,dvfsrc.h new file mode 100644 index 0000000..60b3497 --- /dev/null +++ b/include/dt-bindings/soc/mtk,dvfsrc.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (c) 2018 MediaTek Inc. + */ + +#ifndef _DT_BINDINGS_POWER_MTK_DVFSRC_H +#define _DT_BINDINGS_POWER_MTK_DVFSRC_H + +#define MT8183_DVFSRC_OPP_LP4 0 +#define MT8183_DVFSRC_OPP_LP4X 1 +#define MT8183_DVFSRC_OPP_LP3 2 + +#define MT8183_DVFSRC_LEVEL_1 1 +#define MT8183_DVFSRC_LEVEL_2 2 +#define MT8183_DVFSRC_LEVEL_3 3 +#define MT8183_DVFSRC_LEVEL_4 4 + +#endif /* _DT_BINDINGS_POWER_MTK_DVFSRC_H */