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Wed, 12 Feb 2025 18:09:13 -0800 (PST) From: Inochi Amaoto To: Philipp Zabel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guo Ren , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sophgo@lists.linux.dev, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li Subject: [PATCH 1/4] dt-bindings: reset: add generic bit reset controller Date: Thu, 13 Feb 2025 10:08:54 +0800 Message-ID: <20250213020900.745551-2-inochiama@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250213020900.745551-1-inochiama@gmail.com> References: <20250213020900.745551-1-inochiama@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250212_180915_881351_F6C57BDD X-CRM114-Status: GOOD ( 13.39 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Some SoCs from Aspeed, Allwinner, Sophgo and Synopsys have a simple reset controller by toggling bit. It is a hard time for each device to add its own compatible to the driver. Since this device share a common design, it is possible to add a common device to reduce these unnecessary change. Add common binding for these kind generic reset controller. Signed-off-by: Inochi Amaoto --- .../bindings/reset/reset-simple.yaml | 42 +++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/reset-simple.yaml diff --git a/Documentation/devicetree/bindings/reset/reset-simple.yaml b/Documentation/devicetree/bindings/reset/reset-simple.yaml new file mode 100644 index 000000000000..77584e23e8e8 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/reset-simple.yaml @@ -0,0 +1,42 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reset/reset-simple.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic BIT Reset Controller + +maintainers: + - Inochi Amaoto + +description: + Some reset controller devices uses a simple method to perform + assert/deassert by toggling bit. Some SoCs from Aspeed, Allwinner, + Sophgo and Synopsys have this kind of reset controller instances. + +properties: + compatible: + enum: + - reset-simple-high + - reset-simple-low + + reg: + maxItems: 1 + + "#reset-cells": + const: 1 + +required: + - compatible + - reg + - "#reset-cells" + +additionalProperties: false + +examples: + - | + reset-controller@1000000 { + compatible = "reset-simple-high"; + reg = <0x1000000 0x1000>; + #reset-cells = <1>; + };