xref: /OK3568_Linux_fs/kernel/Documentation/hwmon/npcm750-pwm-fan.rst (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunKernel driver npcm750-pwm-fan
2*4882a593Smuzhiyun=============================
3*4882a593Smuzhiyun
4*4882a593SmuzhiyunSupported chips:
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun	NUVOTON NPCM750/730/715/705
7*4882a593Smuzhiyun
8*4882a593SmuzhiyunAuthors:
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun	<tomer.maimon@nuvoton.com>
11*4882a593Smuzhiyun
12*4882a593SmuzhiyunDescription:
13*4882a593Smuzhiyun------------
14*4882a593SmuzhiyunThis driver implements support for NUVOTON NPCM7XX PWM and Fan Tacho
15*4882a593Smuzhiyuncontroller. The PWM controller supports up to 8 PWM outputs. The Fan tacho
16*4882a593Smuzhiyuncontroller supports up to 16 tachometer inputs.
17*4882a593Smuzhiyun
18*4882a593SmuzhiyunThe driver provides the following sensor accesses in sysfs:
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20*4882a593Smuzhiyun=============== ======= =====================================================
21*4882a593SmuzhiyunfanX_input	ro	provide current fan rotation value in RPM as reported
22*4882a593Smuzhiyun			by the fan to the device.
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24*4882a593SmuzhiyunpwmX		rw	get or set PWM fan control value. This is an integer
25*4882a593Smuzhiyun			value between 0(off) and 255(full speed).
26*4882a593Smuzhiyun=============== ======= =====================================================
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