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([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2beab526db0sm24622438eec.20.2026.03.17.09.17.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Mar 2026 09:17:23 -0700 (PDT) Sender: Guenter Roeck Message-ID: Date: Tue, 17 Mar 2026 09:17:21 -0700 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v3 0/2] hwmon: emc2305: Support configurable fan PWM at shutdown To: florin.leotescu@oss.nxp.com, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Michael Shych , linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: daniel.baluta@nxp.com, viorel.suman@nxp.com, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, festevam@gmail.com, Florin Leotescu References: <20260312144325.1311314-1-florin.leotescu@oss.nxp.com> Content-Language: en-US From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 3/12/26 07:43, florin.leotescu@oss.nxp.com wrote: > From: Florin Leotescu > > This series adds support for configuring the fan PWM duty cycle applied > during system shutdown for the EMC2305 fan controller. > > Some platforms require fans to transition to a predefined safe state > during shutdown or reboot handoff until firmware or the next boot stage > reconfigures the controller. > > The new optional Device Tree property "fan-shutdown-percent" allows the > shutdown PWM duty cycle to be configured per fan output. > > Changes in v3: > - Rebased on current upstream > - Dropped already upstreamed of_node_put(child) fix > Changes in v2: > - Address feedback from Guenter Roeck > - Make shutdown behavior configurable via Device Tree > - Add optional fan-shutdown-percent property > - Apply shutdown PWM only for channels defining the property > > Florin Leotescu (2): > dt-bindings: hwmon: emc2305: Add fan-shutdown-percent property > hwmon: emc2305: Support configurable fan PWM at shutdown > > .../bindings/hwmon/microchip,emc2305.yaml | 8 +++++ > drivers/hwmon/emc2305.c | 34 +++++++++++++++++++ > 2 files changed, 42 insertions(+) > AI review of series is here: https://sashiko.dev/#/patchset/20260312144325.1311314-1-florin.leotescu%40oss.nxp.com Please take a look. Thanks, Guenter