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Thu, 07 Jan 2021 23:49:20 -0800 Received: from MTKMBS01N2.mediatek.inc (172.21.101.79) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 7 Jan 2021 23:48:21 -0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 8 Jan 2021 15:48:19 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 8 Jan 2021 15:48:19 +0800 From: Henry Chen To: Georgi Djakov , Rob Herring , Matthias Brugger , Stephen Boyd , Ryan Case , Mark Brown Subject: [PATCH V7 01/13] dt-bindings: soc: Add dvfsrc driver bindings Date: Fri, 8 Jan 2021 15:48:03 +0800 Message-ID: <1610092095-5113-2-git-send-email-henryc.chen@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1610092095-5113-1-git-send-email-henryc.chen@mediatek.com> References: <1610092095-5113-1-git-send-email-henryc.chen@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: F1ECC0EEE3CA26308E40AD586395996065F407322B65FC1FD3987900641B45122000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210108_024926_927026_E297969E X-CRM114-Status: GOOD ( 14.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Nicolas Boichat , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Henry Chen , Fan Chen , linux-mediatek@lists.infradead.org, Arvin Wang , James Liao , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Document the binding for enabling dvfsrc on MediaTek SoC. Signed-off-by: Henry Chen --- .../devicetree/bindings/soc/mediatek/dvfsrc.yaml | 67 ++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml diff --git a/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml new file mode 100644 index 0000000..0b746a8 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/dvfsrc.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/mediatek/dvfsrc.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: MediaTek dynamic voltage and frequency scaling resource collector (DVFSRC) + +description: | + 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. + +maintainers: + - henryc.chen + +properties: + reg: + description: DVFSRC common register address and length. + + compatible: + enum: + - mediatek,mt6873-dvfsrc + - mediatek,mt8183-dvfsrc + - mediatek,mt8192-dvfsrc + + '#interconnect-cells': + const: 1 + +patternProperties: + dvfsrc-vcore: + type: object + description: + The DVFSRC regulator is modelled as a subdevice of the DVFSRC. + Because DVFSRC can request power directly via register read/write, likes + vcore which is a core power of mt8183. As such, the DVFSRC regulator + requires that DVFSRC nodes be present. + $ref: /schemas/regulator/regulator.yaml# + +required: + - compatible + - reg + - "#interconnect-cells" + +additionalProperties: false + +examples: + - | + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + dvfsrc@10012000 { + compatible = "mediatek,mt8183-dvfsrc"; + reg = <0 0x10012000 0 0x1000>; + #interconnect-cells = <1>; + dvfsrc_vcore: dvfsrc-vcore { + regulator-name = "dvfsrc-vcore"; + regulator-min-microvolt = <725000>; + regulator-max-microvolt = <800000>; + regulator-always-on; + }; + }; + };