From patchwork Fri May 20 13:19:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 12856820 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A440AC433F5 for ; Fri, 20 May 2022 13:21:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EJPC4mSl7uy/+a/idQnXF7FZp4CLDC5bvlUgUFMJlac=; b=EodY4y42+sDG9Q TfcAdN8zoHxivivUdJ9zLsJyBsZfRVYD/jLKUc+S9a7SYmWV03fiZzK/VCSMQm0QVhCJG92IdEMM4 nWXvMNKXza8ONYWihhmgksdwVGxX5MIeiNoWHlnmMa/FaAy23/f3lg72qgzqwZ4YuM2lFByw8uet0 FTbNiHja41jYpbyrDoZfW6qsOXHzea/ALHkvempq1ziZMKSF0S6ulMmVgTDHtdv/iHfisDdymxFRy HFmtHBED+OX2imUMTJOXHE+9fBfKchh1gqY04H5idOLeVfS4U8a9CmT7AT/PoEtxKIhLx7N47X03y Mdc31a/rPjp7VS7npWUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ns2YB-00CaqB-0Z; Fri, 20 May 2022 13:20:15 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ns2Y7-00CaoI-40; Fri, 20 May 2022 13:20:13 +0000 X-UUID: 64cd8b3a08c94409b55b1bdf65409d1f-20220520 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5, REQID:69417a36-8676-4c4b-a9f3-d6b8258fd5ed, OB:0, LO B:0,IP:0,URL:25,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:25 X-CID-META: VersionHash:2a19b09, CLOUDID:e5d9057a-5ef6-470b-96c9-bdb8ced32786, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:0,BEC:nil X-UUID: 64cd8b3a08c94409b55b1bdf65409d1f-20220520 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1285905578; Fri, 20 May 2022 06:20:01 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 20 May 2022 06:19:59 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Fri, 20 May 2022 21:19:58 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Fri, 20 May 2022 21:19:58 +0800 From: Johnson Wang To: , , , CC: , , , , , , , , Johnson Wang Subject: [PATCH v5 1/2] dt-bindings: interconnect: Add MediaTek CCI dt-bindings Date: Fri, 20 May 2022 21:19:55 +0800 Message-ID: <20220520131956.31150-2-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220520131956.31150-1-johnson.wang@mediatek.com> References: <20220520131956.31150-1-johnson.wang@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-20220520_062011_203404_5C766E34 X-CRM114-Status: GOOD ( 18.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add devicetree binding of MediaTek CCI on MT8183 and MT8186. Signed-off-by: Jia-Wei Chang Signed-off-by: Johnson Wang Reviewed-by: Krzysztof Kozlowski Acked-by: Chanwoo Choi Reviewed-by: Chen-Yu Tsai --- .../bindings/interconnect/mediatek,cci.yaml | 141 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 142 insertions(+) create mode 100644 Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml diff --git a/Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml b/Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml new file mode 100644 index 000000000000..449c7c988229 --- /dev/null +++ b/Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml @@ -0,0 +1,141 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interconnect/mediatek,cci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek Cache Coherent Interconnect (CCI) frequency and voltage scaling + +maintainers: + - Jia-Wei Chang + - Johnson Wang + +description: | + MediaTek Cache Coherent Interconnect (CCI) is a hardware engine used by + MT8183 and MT8186 SoCs to scale the frequency and adjust the voltage in + hardware. It can also optimize the voltage to reduce the power consumption. + +properties: + compatible: + enum: + - mediatek,mt8183-cci + - mediatek,mt8186-cci + + clocks: + items: + - description: + The multiplexer for clock input of the bus. + - description: + A parent of "bus" clock which is used as an intermediate clock source + when the original clock source (PLL) is under transition and not + stable yet. + + clock-names: + items: + - const: cci + - const: intermediate + + operating-points-v2: true + opp-table: true + + proc-supply: + description: + Phandle of the regulator for CCI that provides the supply voltage. + + sram-supply: + description: + Phandle of the regulator for sram of CCI that provides the supply + voltage. When it is present, the implementation needs to do + "voltage tracking" to step by step scale up/down Vproc and Vsram to fit + SoC specific needs. When absent, the voltage scaling flow is handled by + hardware, hence no software "voltage tracking" is needed. + +required: + - compatible + - clocks + - clock-names + - operating-points-v2 + - proc-supply + +additionalProperties: false + +examples: + - | + #include + cci: cci { + compatible = "mediatek,mt8183-cci"; + clocks = <&mcucfg CLK_MCU_BUS_SEL>, + <&topckgen CLK_TOP_ARMPLL_DIV_PLL1>; + clock-names = "cci", "intermediate"; + operating-points-v2 = <&cci_opp>; + proc-supply = <&mt6358_vproc12_reg>; + }; + + cci_opp: opp-table-cci { + compatible = "operating-points-v2"; + opp-shared; + opp2_00: opp-273000000 { + opp-hz = /bits/ 64 <273000000>; + opp-microvolt = <650000>; + }; + opp2_01: opp-338000000 { + opp-hz = /bits/ 64 <338000000>; + opp-microvolt = <687500>; + }; + opp2_02: opp-403000000 { + opp-hz = /bits/ 64 <403000000>; + opp-microvolt = <718750>; + }; + opp2_03: opp-463000000 { + opp-hz = /bits/ 64 <463000000>; + opp-microvolt = <756250>; + }; + opp2_04: opp-546000000 { + opp-hz = /bits/ 64 <546000000>; + opp-microvolt = <800000>; + }; + opp2_05: opp-624000000 { + opp-hz = /bits/ 64 <624000000>; + opp-microvolt = <818750>; + }; + opp2_06: opp-689000000 { + opp-hz = /bits/ 64 <689000000>; + opp-microvolt = <850000>; + }; + opp2_07: opp-767000000 { + opp-hz = /bits/ 64 <767000000>; + opp-microvolt = <868750>; + }; + opp2_08: opp-845000000 { + opp-hz = /bits/ 64 <845000000>; + opp-microvolt = <893750>; + }; + opp2_09: opp-871000000 { + opp-hz = /bits/ 64 <871000000>; + opp-microvolt = <906250>; + }; + opp2_10: opp-923000000 { + opp-hz = /bits/ 64 <923000000>; + opp-microvolt = <931250>; + }; + opp2_11: opp-962000000 { + opp-hz = /bits/ 64 <962000000>; + opp-microvolt = <943750>; + }; + opp2_12: opp-1027000000 { + opp-hz = /bits/ 64 <1027000000>; + opp-microvolt = <975000>; + }; + opp2_13: opp-1092000000 { + opp-hz = /bits/ 64 <1092000000>; + opp-microvolt = <1000000>; + }; + opp2_14: opp-1144000000 { + opp-hz = /bits/ 64 <1144000000>; + opp-microvolt = <1025000>; + }; + opp2_15: opp-1196000000 { + opp-hz = /bits/ 64 <1196000000>; + opp-microvolt = <1050000>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index f468864fd268..4126418bd1f7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5700,6 +5700,7 @@ L: linux-pm@vger.kernel.org S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git F: Documentation/devicetree/bindings/devfreq/ +F: Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml F: drivers/devfreq/ F: include/linux/devfreq.h F: include/trace/events/devfreq.h