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[35.194.130.100]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35bb9ff59a4sm1521664a91.2.2026.03.18.12.36.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Mar 2026 12:36:38 -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 0/3] nvmem: Add Nuvoton NPCM OTP driver Date: Wed, 18 Mar 2026 19:35:35 +0000 Message-ID: <20260318193538.246853-1-visitorckw@gmail.com> X-Mailer: git-send-email 2.53.0.851.ga537e3e6e9-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add support for the OTP memory controllers found on Nuvoton NPCM7 SoCs. This OTP is read-only and manages two independent arrays: Key Storage and Fuse Array, which contain cryptographic keys, hardware strapping, and calibration data. Each array provides 1024 bytes of storage. You can use qemu-system-arm -M npcm750-evb to play around with it. Kuan-Wei Chiu (3): dt-bindings: nvmem: add nuvoton,npcm750-otp nvmem: npcm-otp: Add Nuvoton NPCM OTP driver ARM: dts: nuvoton: Add OTP nodes for NPCM7xx .../bindings/nvmem/nuvoton,npcm750-otp.yaml | 35 +++++ MAINTAINERS | 7 + .../dts/nuvoton/nuvoton-common-npcm7xx.dtsi | 10 ++ drivers/nvmem/Kconfig | 10 ++ drivers/nvmem/Makefile | 2 + drivers/nvmem/npcm-otp.c | 129 ++++++++++++++++++ 6 files changed, 193 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/nuvoton,npcm750-otp.yaml create mode 100644 drivers/nvmem/npcm-otp.c -- 2.53.0.851.ga537e3e6e9-goog