From patchwork Wed Jan 2 14:09:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Chen X-Patchwork-Id: 10746451 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 01D581399 for ; Wed, 2 Jan 2019 14:11:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E711B288E2 for ; Wed, 2 Jan 2019 14:11:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DAF7428928; Wed, 2 Jan 2019 14:11:47 +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 31CAC288E2 for ; Wed, 2 Jan 2019 14:11:46 +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=o0YV6PZJTITnqlEt40y4gLhyqKuCC3CWZwgfm/Tr8I4=; b=rTkRvgGPpTjp2y yymXmG/IxIhB53nZ/7XKp17RCbSLEOfRE6dUWrTU2NX0WZnzZRRdPuFYxMSdsNjENxVvW2KSYE1sL vUiCmU2VyUK3OkeJ5+qkGwAef5YvLhG4FxgARX5wxcAIcrU4HYMCkU4/pzCJaQMrnPddJc5yVVq7G AY/tJVYWpXm7yckQc49UoU+Av3aZrXJi7wI/ruX/f0eoZZGJzP1fYwRDSJr/vmedelGM5pzRvg0o9 wiSGB5ZkIqsxMvE2CmN+cU6s3QHYYQOH+PTjtHjIC3ZoCLeJFJuD+gGbfBDcaL5LLeZnYFcOOIRJq jb//GF0fL98S5St2SCDQ==; 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 1gehFH-0007KW-EB; Wed, 02 Jan 2019 14:11:43 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gehE9-00062E-Ct; Wed, 02 Jan 2019 14:10:40 +0000 X-UUID: 19e28fa6221b4e99b9fb31dc42cd8311-20190102 X-UUID: 19e28fa6221b4e99b9fb31dc42cd8311-20190102 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 252567244; Wed, 02 Jan 2019 22:10:28 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 2 Jan 2019 22:10:26 +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 22:10:26 +0800 From: Henry Chen To: Viresh Kumar , Stephen Boyd , Rob Herring , Matthias Brugger , Ulf Hansson Subject: [RFC RESEND PATCH 2/7] dt-bindings: soc: Add opp table on scpsys bindings Date: Wed, 2 Jan 2019 22:09:53 +0800 Message-ID: <1546438198-1677-3-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1546438198-1677-1-git-send-email-henryc.chen@mediatek.com> References: <1546438198-1677-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190102_061033_872450_9E2B3B13 X-CRM114-Status: GOOD ( 12.80 ) 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 Add opp table on scpsys dt-bindings for Mediatek SoC. Signed-off-by: Henry Chen --- Documentation/devicetree/bindings/opp/mtk-opp.txt | 24 +++++++++++++ .../devicetree/bindings/soc/mediatek/scpsys.txt | 42 ++++++++++++++++++++++ 2 files changed, 66 insertions(+) create mode 100644 Documentation/devicetree/bindings/opp/mtk-opp.txt diff --git a/Documentation/devicetree/bindings/opp/mtk-opp.txt b/Documentation/devicetree/bindings/opp/mtk-opp.txt new file mode 100644 index 0000000..036be1c --- /dev/null +++ b/Documentation/devicetree/bindings/opp/mtk-opp.txt @@ -0,0 +1,24 @@ +Mediatek OPP bindings to descibe OPP nodes with level values + +OPP tables for devices on Mediatek platforms require an additional +platform specific level value to be specified. +This value is passed on to the mediatek Power Management Unit by the +CPU, which then takes the necessary actions to set a voltage rail +to an appropriate voltage based on the value passed. + +The bindings are based on top of the operating-points-v2 bindings +described in Documentation/devicetree/bindings/opp/opp.txt +Additional properties are described below. + +* OPP Table Node + +Required properties: +- compatible: Allow OPPs to express their compatibility. It should be: + "operating-points-v2-mtk-level" + +* OPP Node + +Required properties: +- mtk,level: On Mediatek platforms an OPP node can describe a positive value +representing a level that's communicated with a our power management hardware +which then translates it into a certain voltage on a voltage rail. diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt index b4728ce..299b526 100644 --- a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt @@ -63,6 +63,10 @@ Optional properties: - mfg_2d-supply: Power supply for the mfg_2d power domain - mfg-supply: Power supply for the mfg power domain +- operating-points-v2: Phandle to the OPP table for the Power domain. + Refer to Documentation/devicetree/bindings/power/power_domain.txt + and Documentation/devicetree/bindings/opp/mtk-opp.txt for more details + Example: scpsys: scpsys@10006000 { @@ -75,6 +79,27 @@ Example: <&topckgen CLK_TOP_VENC_SEL>, <&topckgen CLK_TOP_VENC_LT_SEL>; clock-names = "mfg", "mm", "venc", "venc_lt"; + operating-points-v2 = <&dvfsrc_opp_table>; + + dvfsrc_opp_table: opp-table { + compatible = "operating-points-v2-mtk-level"; + + dvfsrc_vol_min: opp1 { + mtk,level = ; + }; + + dvfsrc_freq_medium: opp2 { + mtk,level = ; + }; + + dvfsrc_freq_max: opp3 { + mtk,level = ; + }; + + dvfsrc_vol_max: opp4 { + mtk,level = ; + }; + }; }; Example consumer: @@ -82,4 +107,21 @@ Example consumer: afe: mt8173-afe-pcm@11220000 { compatible = "mediatek,mt8173-afe-pcm"; power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>; + operating-points-v2 = <&aud_opp_table>; + }; + + aud_opp_table: aud-opp-table { + compatible = "operating-points-v2"; + opp1 { + opp-hz = /bits/ 64 <793000000>; + required-opps = <&dvfsrc_vol_min>; + }; + opp2 { + opp-hz = /bits/ 64 <910000000>; + required-opps = <&dvfsrc_vol_max>; + }; + opp3 { + opp-hz = /bits/ 64 <1014000000>; + required-opps = <&dvfsrc_vol_max>; + }; };