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[35.194.130.100]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35bb9ff59a4sm1521664a91.2.2026.03.18.12.36.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Mar 2026 12:36:42 -0700 (PDT) From: Kuan-Wei Chiu To: andrew@codeconstruct.com.au, avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, srini@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: venture@google.com, yuenn@google.com, benjaminfair@google.com, jserv@ccns.ncku.edu.tw, eleanor15x@gmail.com, linux-arm-kernel@lists.infradead.org, openbmc@lists.ozlabs.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Kuan-Wei Chiu Subject: [PATCH 1/3] dt-bindings: nvmem: add nuvoton,npcm750-otp Date: Wed, 18 Mar 2026 19:35:36 +0000 Message-ID: <20260318193538.246853-2-visitorckw@gmail.com> X-Mailer: git-send-email 2.53.0.851.ga537e3e6e9-goog In-Reply-To: <20260318193538.246853-1-visitorckw@gmail.com> References: <20260318193538.246853-1-visitorckw@gmail.com> X-Mailing-List: openbmc@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add device tree bindings for the OTP memory controllers found on Nuvoton NPCM7xx SoCs. The NPCM7xx SoCs contain two independent OTP memory arrays: - Key Storage (OTP1): used for cryptographic keys. - Fuse Array (OTP2): used for hardware strapping, calibration data, and derivative definitions. Each controller provides up to 1024 bytes of read-only storage. Signed-off-by: Kuan-Wei Chiu --- .../bindings/nvmem/nuvoton,npcm750-otp.yaml | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/nuvoton,npcm750-otp.yaml diff --git a/Documentation/devicetree/bindings/nvmem/nuvoton,npcm750-otp.yaml b/Documentation/devicetree/bindings/nvmem/nuvoton,npcm750-otp.yaml new file mode 100644 index 000000000000..45bcf72d7c78 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/nuvoton,npcm750-otp.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvmem/nuvoton,npcm750-otp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton NPCM7xx OTP (One-Time Programmable) Memory + +maintainers: + - Kuan-Wei Chiu + +allOf: + - $ref: nvmem.yaml# + +properties: + compatible: + enum: + - nuvoton,npcm750-key-storage + - nuvoton,npcm750-fuse-array + + reg: + maxItems: 1 + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + otp@f0189000 { + compatible = "nuvoton,npcm750-key-storage"; + reg = <0xf0189000 0x1000>; + }; -- 2.53.0.851.ga537e3e6e9-goog