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[ Upstream commit170a4b21f4] According to MAX6639 documentation: D1: PWM Output Polarity. PWM output is low at 100% duty cycle when this bit is set to zero. PWM output is high at 100% duty cycle when this bit is set to 1. Up to commit0f33272b60("hwmon: (max6639) : Update hwmon init using info structure"), the polarity was set to high (0x2) when no platform data was set. After the patch, the polarity register wasn't set anymore if no platform data was specified. Nowadays, since commit7506ebcd66("hwmon: (max6639) : Configure based on DT property"), it is always set to low which doesn't match with the comment above and change the behavior compared to versions prior0f33272b60. Fixes:0f33272b60("hwmon: (max6639) : Update hwmon init using info structure") Signed-off-by: Olivier Sobrie <olivier@sobrie.be> Link: https://lore.kernel.org/r/20260304212039.570274-1-olivier@sobrie.be Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <sashal@kernel.org>