From patchwork Tue Jan 7 07:01:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roger Lu X-Patchwork-Id: 213100 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_BASE64_TEXT, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, 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 8B206C33C9E for ; Tue, 7 Jan 2020 07:02:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 61A46207FD for ; Tue, 7 Jan 2020 07:02:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="dEQYRML4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727554AbgAGHC2 (ORCPT ); Tue, 7 Jan 2020 02:02:28 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:24243 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727413AbgAGHC2 (ORCPT ); Tue, 7 Jan 2020 02:02:28 -0500 X-UUID: 0a3b91bbc8644cb9bc0d39ddae3228c6-20200107 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:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=Et48gACf9Egz+SR4ne4zbTYMcE1fV+LhbFdrbAdWJRk=; b=dEQYRML4xmWP7Ct2dK2+m/b+N5vZKzTZLYoXoXLgCfwhvIWCInYaJwEUynHV3a8w/zq2/ykIOieIlG4n34c4RFAfNezhwJgg0B4ONGuHyHTTifVF5CydRrfcauwBABVZ4SzxNWN0UP+cx67/PriPhYiDCfKOJXytjOuJICAkhR0=; X-UUID: 0a3b91bbc8644cb9bc0d39ddae3228c6-20200107 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 2084706163; Tue, 07 Jan 2020 15:02:21 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 7 Jan 2020 15:01:19 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 7 Jan 2020 15:01:09 +0800 From: Roger Lu To: Kevin Hilman , Rob Herring , Nicolas Boichat , Stephen Boyd CC: Fan Chen , HenryC Chen , YT Lee , Xiaoqing Liu , Charles Yang , Angus Lin , Mark Rutland , Matthias Brugger , Nishanth Menon , Roger Lu , , , , , Subject: [PATCH v6 1/3] dt-bindings: soc: add mtk svs dt-bindings Date: Tue, 7 Jan 2020 15:01:52 +0800 Message-ID: <20200107070154.1574-2-roger.lu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20200107070154.1574-1-roger.lu@mediatek.com> References: <20200107070154.1574-1-roger.lu@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Document the binding for enabling mtk svs on MediaTek SoC. Signed-off-by: Roger Lu --- .../devicetree/bindings/power/mtk-svs.txt | 76 +++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/mtk-svs.txt -- 2.18.0 diff --git a/Documentation/devicetree/bindings/power/mtk-svs.txt b/Documentation/devicetree/bindings/power/mtk-svs.txt new file mode 100644 index 000000000000..9a3e81b9e1d2 --- /dev/null +++ b/Documentation/devicetree/bindings/power/mtk-svs.txt @@ -0,0 +1,76 @@ +* Mediatek Smart Voltage Scaling (MTK SVS) + +This describes the device tree binding for the MTK SVS controller (bank) +which helps provide the optimized CPU/GPU/CCI voltages. This device also +needs thermal data to calculate thermal slope for accurately compensate +the voltages when temperature change. + +Required properties: +- compatible: + - "mediatek,mt8183-svs" : For MT8183 family of SoCs +- reg: Address range of the MTK SVS controller. +- interrupts: IRQ for the MTK SVS controller. +- clocks, clock-names: Clocks needed for the svs hardware. required + clocks are: + "main": Main clock for svs controller to work. +- nvmem-cells: Phandle to the calibration data provided by a nvmem device. +- nvmem-cell-names: Should be "svs-calibration-data" and "calibration-data" + +Subnodes: +- svs-cpu-little: SVS bank device node of little CPU + compatible: "mediatek,mt8183-svs-cpu-little" + operating-points-v2: OPP table hooked by SVS little CPU bank. + SVS will optimze this OPP table voltage part. + vcpu-little-supply: PMIC buck of little CPU +- svs-cpu-big: SVS bank device node of big CPU + compatible: "mediatek,mt8183-svs-cpu-big" + operating-points-v2: OPP table hooked by SVS big CPU bank. + SVS will optimze this OPP table voltage part. + vcpu-big-supply: PMIC buck of big CPU +- svs-cci: SVS bank device node of CCI + compatible: "mediatek,mt8183-svs-cci" + operating-points-v2: OPP table hooked by SVS CCI bank. + SVS will optimze this OPP table voltage part. + vcci-supply: PMIC buck of CCI +- svs-gpu: SVS bank device node of GPU + compatible: "mediatek,mt8183-svs-gpu" + operating-points-v2: OPP table hooked by SVS GPU bank. + SVS will optimze this OPP table voltage part. + vgpu-supply: PMIC buck of GPU + +Example: + + svs: svs@1100b000 { + compatible = "mediatek,mt8183-svs"; + reg = <0 0x1100b000 0 0x1000>; + interrupts = ; + clocks = <&infracfg CLK_INFRA_THERM>; + clock-names = "main_clk"; + nvmem-cells = <&svs_calibration>, <&thermal_calibration>; + nvmem-cell-names = "svs-calibration-data", "calibration-data"; + + svs_cpu_little: svs-cpu-little { + compatible = "mediatek,mt8183-svs-cpu-little"; + operating-points-v2 = <&cluster0_opp>; + vcpu-little-supply = <&mt6358_vproc12_reg>; + }; + + svs_cpu_big: svs-cpu-big { + compatible = "mediatek,mt8183-svs-cpu-big"; + operating-points-v2 = <&cluster1_opp>; + vcpu-big-supply = <&mt6358_vproc11_reg>; + }; + + svs_cci: svs-cci { + compatible = "mediatek,mt8183-svs-cci"; + operating-points-v2 = <&cci_opp>; + vcci-supply = <&mt6358_vproc12_reg>; + }; + + svs_gpu: svs-gpu { + compatible = "mediatek,mt8183-svs-gpu"; + power-domains = <&scpsys MT8183_POWER_DOMAIN_MFG_2D>; + operating-points-v2 = <&gpu_opp_table>; + vgpu-spply = <&mt6358_vgpu_reg>; + }; + };