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([2a04:ee41:82:7577:a4c5:86fc:3b16:bc0a]) by smtp.googlemail.com with ESMTPSA id a640c23a62f3a-b87959ca32esm1193767366b.41.2026.01.19.11.08.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jan 2026 11:08:10 -0800 (PST) From: Vasileios Amoiridis To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux@roeck-us.net Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, Vasileios Amoiridis Subject: [PATCH v2 0/2] Add support for HiTRON HAC300S PSU Date: Mon, 19 Jan 2026 20:08:04 +0100 Message-ID: <20260119190806.35276-1-vassilisamir@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Vasileios Amoiridis Changes in v2: -------------- Patch 1/2: - fixed type - Added Ack-By Patch 2/2: - removed if statement for VOUT_MODE reg - device specific read_word_data function reads only affected registers and returns -ENODATA - fixed typos v1: --- Add support for the HiTRON HAC300S AC/DC switching power supply in compact PCI format, with a 300W rating. This is a simple PMBUS compatible device. There is a small caveat with the internal registers of the device and more specifically with the PMBUS_VOUT_MODE. As it is already described in the driver, the device does not support the PMBUS_VOUT_MODE register and at the same time, it returns the voltage output values in Linear11 which is not adhering to the PMBus specification (PMBus Specification Part II, Section 7.1-7.3). For that reason the PMBUS_VOUT_MODE register is being faked and returns the exponent value of the READ_VOUT register. The exponent part of the VOUT_* registers is being cleard in order to return the mantissa to the pmbus core. Vasileios Amoiridis (2): dt-bindings: trivial-devices: Add hitron,hac300s hwmon: Add support for HiTRON HAC300S PSU .../devicetree/bindings/trivial-devices.yaml | 2 + .../devicetree/bindings/vendor-prefixes.yaml | 2 + Documentation/hwmon/hac300s.rst | 37 +++++ Documentation/hwmon/index.rst | 1 + MAINTAINERS | 7 + drivers/hwmon/pmbus/Kconfig | 9 ++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/hac300s.c | 132 ++++++++++++++++++ 8 files changed, 191 insertions(+) create mode 100644 Documentation/hwmon/hac300s.rst create mode 100644 drivers/hwmon/pmbus/hac300s.c -- 2.47.3