summaryrefslogtreecommitdiff
path: root/Documentation/hwmon
diff options
context:
space:
mode:
authorTomer Maimon <tmaimon77@gmail.com>2018-07-04 02:23:26 +0300
committerGuenter Roeck <linux@roeck-us.net>2018-07-09 06:08:13 +0300
commitf1fd4a4db777030a2542701fb0d3a261d4472d6d (patch)
treed21f458b1efa180252bf8411e31171e4ba7e6e2f /Documentation/hwmon
parent68dde6cae6e523dfec8ec097af2c41680fb766c6 (diff)
downloadlinux-f1fd4a4db777030a2542701fb0d3a261d4472d6d.tar.xz
hwmon: Add NPCM7xx PWM and Fan driver
Add Nuvoton BMC NPCM750/730/715/705 Pulse Width Modulation (PWM) and Fan tacho driver. The Nuvoton BMC NPCM750/730/715/705 supports 8 PWM controller outputs and 16 Fan controller inputs. The driver provides a sysfs entries through which the user can configure the duty-cycle value from 0(off) and 255(full speed) and read the fan tacho rpm value. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/npcm750-pwm-fan22
1 files changed, 22 insertions, 0 deletions
diff --git a/Documentation/hwmon/npcm750-pwm-fan b/Documentation/hwmon/npcm750-pwm-fan
new file mode 100644
index 000000000000..6156ef7398e6
--- /dev/null
+++ b/Documentation/hwmon/npcm750-pwm-fan
@@ -0,0 +1,22 @@
+Kernel driver npcm750-pwm-fan
+=============================
+
+Supported chips:
+ NUVOTON NPCM750/730/715/705
+
+Authors:
+ <tomer.maimon@nuvoton.com>
+
+Description:
+------------
+This driver implements support for NUVOTON NPCM7XX PWM and Fan Tacho
+controller. The PWM controller supports up to 8 PWM outputs. The Fan tacho
+controller supports up to 16 tachometer inputs.
+
+The driver provides the following sensor accesses in sysfs:
+
+fanX_input ro provide current fan rotation value in RPM as reported
+ by the fan to the device.
+
+pwmX rw get or set PWM fan control value. This is an integer
+ value between 0(off) and 255(full speed).