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Tue, 10 Jun 2025 20:10:42 -0700 (PDT) Received: from hsinchu26.internal.sifive.com ([210.176.154.34]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-236030789c2sm77669035ad.29.2025.06.10.20.10.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Jun 2025 20:10:42 -0700 (PDT) From: Nick Hu To: conor+dt@kernel.org, krzk+dt@kernel.org, Cyan Yang , Nick Hu , Samuel Holland , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Rob Herring , Paul Walmsley Subject: [PATCH v2 1/3] dt-bindings: power: Add SiFive Domain Management controllers Date: Wed, 11 Jun 2025 11:10:20 +0800 Message-Id: <20250611031023.28769-2-nick.hu@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250611031023.28769-1-nick.hu@sifive.com> References: <20250611031023.28769-1-nick.hu@sifive.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: SiFive Domain Management controller includes the following components - SiFive Tile Management Controller - SiFive Cluster Management Controller - SiFive Core Complex Management Controller These controllers control the clock and power domain of the corresponding domain. However, Since we don't have a SoC specific compatible string yet, so add '- {}' for the first entry [1][2]. Links: - [1] https://lore.kernel.org/lkml/20250311195953.GA14239-robh@kernel.org/ - [2] https://lore.kernel.org/lkml/CAKddAkAzDGL-7MbroRqQnZzPXOquUMKNuGGppqB-d_XZXbcvBA@mail.gmail.com/T/#t Signed-off-by: Nick Hu Reviewed-by: Samuel Holland --- .../devicetree/bindings/power/sifive,tmc.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/sifive,tmc.yaml diff --git a/Documentation/devicetree/bindings/power/sifive,tmc.yaml b/Documentation/devicetree/bindings/power/sifive,tmc.yaml new file mode 100644 index 000000000000..4567d51148e1 --- /dev/null +++ b/Documentation/devicetree/bindings/power/sifive,tmc.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/sifive,tmc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SiFive Domain Management Controller + +maintainers: + - Cyan Yang + - Nick Hu + - Samuel Holland + +description: | + SiFive Domain Management Controllers includes the following components + - Tile Management Controller (TMC) + - Cluster Management Controller (CMC) + - Subsystem Management Controller (SMC) + These controllers manage both the clock and power domains of the + associated components. They support the SiFive Quiet Interface Protocol + (SQIP) starting from Version 1. The control method differs from Version + 0, making them incompatible. + +allOf: + - $ref: power-domain.yaml# + +properties: + compatible: + oneOf: + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,cmc3 + - const: sifive,cmc2 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,cmc2 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,smc0 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,smc1 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,smc3 + - const: sifive,smc1 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,tmc0 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,tmc1 + - items: + - {} # Leave a empty for future SoC specific compatible string + - const: sifive,tmc3 + - const: sifive,tmc1 + + reg: + maxItems: 1 + + "#power-domain-cells": + const: 0 + +required: + - compatible + - reg + +additionalProperties: false + +# The example will be added once the SoC specific compatible string is available -- 2.17.1