hwmon: (pwm-fan) Read PWM FAN configuration from device tree
This patch provides code for reading PWM FAN configuration data via device tree. The pwm-fan can work with full speed when configuration is not provided. However, errors are propagated when wrong DT bindings are found. Additionally the struct pwm_fan_ctx has been extended. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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