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Wed, 29 Jul 2026 01:59:11 -0700 (PDT) Received: from i386.168.1.127 ([2402:a00:163:2ce9:9c6f:e28:3da8:7980]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31504cc9dffsm8179352eec.14.2026.07.29.01.59.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jul 2026 01:59:10 -0700 (PDT) From: Hrushiraj Gandhi To: Srinivas Kandagatla , Heiko Stuebner Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Girdwood , Mark Brown , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Hrushiraj Gandhi Subject: [PATCH v2 0/2] nvmem: rockchip-efuse: add write support with VQPS gating Date: Wed, 29 Jul 2026 14:28:54 +0530 Message-ID: <20260729085856.226001-1-hrushirajg23@gmail.com> X-Mailer: git-send-email 2.47.3 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 RK3399 eFuse write (OTP programming) support, gated on the presence of an optional VQPS programming supply in the device tree. Changes in v2: - Replaced the rockchip,efuse-write-enable boolean property (v1) with a proper optional vqps-supply regulator, as suggested by Heiko Stuebner. The supply presence acts as the hardware-level gate for write support; the driver owns regulator sequencing entirely inside the write callback (enable before A_PGM strobe loop, disable after). - Removed stale debug dev_info() left from development. - Fixed checkpatch: removed blank line after while open-brace in rockchip_rk3399_efuse_read(). Link: https://lore.kernel.org/all/20260715110107.409204-1-hrushirajg23@gmail.com/ Hrushiraj Gandhi (2): dt-bindings: nvmem: rockchip-efuse: add optional vqps supply nvmem: rockchip-efuse: add write support with optional VQPS supply gating .../bindings/nvmem/rockchip-efuse.yaml | 5 + drivers/nvmem/rockchip-efuse.c | 178 +++++++++++++++--- 2 files changed, 158 insertions(+), 25 deletions(-) -- 2.47.3