From patchwork Fri Mar 12 11:40:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Yuan X-Patchwork-Id: 399235 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, URIBL_BLOCKED, 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 06E34C43331 for ; Fri, 12 Mar 2021 11:41:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E77A664FD6 for ; Fri, 12 Mar 2021 11:41:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231650AbhCLLk5 (ORCPT ); Fri, 12 Mar 2021 06:40:57 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:58965 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S231500AbhCLLku (ORCPT ); Fri, 12 Mar 2021 06:40:50 -0500 X-UUID: 259a79f9bc0048639c3bc1f77f7785a7-20210312 X-UUID: 259a79f9bc0048639c3bc1f77f7785a7-20210312 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1971651345; Fri, 12 Mar 2021 19:40:47 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 12 Mar 2021 19:40:45 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 12 Mar 2021 19:40:45 +0800 From: Hector Yuan To: , , , "Rafael J. Wysocki" , Viresh Kumar , Matthias Brugger , Rob Herring , , CC: , Subject: [PATCH v11 2/2] dt-bindings: cpufreq: add bindings for MediaTek cpufreq HW Date: Fri, 12 Mar 2021 19:40:35 +0800 Message-ID: <1615549235-27700-3-git-send-email-hector.yuan@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1615549235-27700-1-git-send-email-hector.yuan@mediatek.com> References: <1615549235-27700-1-git-send-email-hector.yuan@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: "Hector.Yuan" Add devicetree bindings for MediaTek HW driver. Signed-off-by: Hector.Yuan --- .../bindings/cpufreq/cpufreq-mediatek-hw.yaml | 127 ++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml new file mode 100644 index 0000000..0f3ad47 --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/cpufreq/cpufreq-mediatek-hw.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek's CPUFREQ Bindings + +maintainers: + - Hector Yuan + +description: + CPUFREQ HW is a hardware engine used by MediaTek + SoCs to manage frequency in hardware. It is capable of controlling frequency + for multiple clusters. + +properties: + compatible: + const: mediatek,cpufreq-hw + + reg: + minItems: 1 + maxItems: 2 + description: | + Addresses and sizes for the memory of the + HW bases in each frequency domain. + + "#performance-domain-cells": + description: + Number of cells in a performance domain specifier. Typically 0 for nodes + representing a single performance domain and 1 for nodes providing + multiple performance domains (e.g. performance controllers), but can be + any value as specified by device tree binding documentation of particular + provider. + enum: [ 0, 1 ] + +required: + - compatible + - reg + - "#performance-domain-cells" + +additionalProperties: true + +examples: + - | + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a55"; + enable-method = "psci"; + performance-domains = <&performance 0>; + reg = <0x000>; + }; + + cpu1: cpu@100 { + device_type = "cpu"; + compatible = "arm,cortex-a55"; + enable-method = "psci"; + performance-domains = <&performance 0>; + reg = <0x100>; + }; + + cpu2: cpu@200 { + device_type = "cpu"; + compatible = "arm,cortex-a55"; + enable-method = "psci"; + performance-domains = <&performance 0>; + reg = <0x200>; + }; + + cpu3: cpu@300 { + device_type = "cpu"; + compatible = "arm,cortex-a55"; + enable-method = "psci"; + performance-domains = <&performance 0>; + reg = <0x300>; + }; + + cpu4: cpu@400 { + device_type = "cpu"; + compatible = "arm,cortex-a55"; + enable-method = "psci"; + performance-domains = <&performance 1>; + reg = <0x400>; + }; + + cpu5: cpu@500 { + device_type = "cpu"; + compatible = "arm,cortex-a55"; + enable-method = "psci"; + performance-domains = <&performance 1>; + reg = <0x500>; + }; + + cpu6: cpu@600 { + device_type = "cpu"; + compatible = "arm,cortex-a75"; + enable-method = "psci"; + performance-domains = <&performance 1>; + reg = <0x600>; + }; + + cpu7: cpu@700 { + device_type = "cpu"; + compatible = "arm,cortex-a75"; + enable-method = "psci"; + performance-domains = <&performance 1>; + reg = <0x700>; + }; + }; + + /* ... */ + + soc { + #address-cells = <2>; + #size-cells = <2>; + + performance: performance-controller@11bc00 { + compatible = "mediatek,cpufreq-hw"; + reg = <0 0x0011bc10 0 0x120>, <0 0x0011bd30 0 0x120>; + + #performance-domain-cells = <1>; + }; + };