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authorDavid Phillips <david@yeah.nah.nz>2021-05-22 17:31:09 +1200
committerDavid Phillips <david@yeah.nah.nz>2021-05-22 17:31:09 +1200
commitcb1873c3270b9f0891a9bc0faebb45b23f3cb37b (patch)
tree6ac01f4a25a2c4b623f0cf01bcbef37b275a5e72 /README.md
parent9ea2d46ebe5713cbdabb3ae028bb2fc27e93c00d (diff)
downloadcds9k-cb1873c3270b9f0891a9bc0faebb45b23f3cb37b.tar.xz
Add driver for cds9k fan block
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@@ -12,7 +12,8 @@ care" and write as 0.
## IP Block: `cds9k-fan`
- FIXME add description
+The CDS9K fan control block allows PWM speed control of a single fan, and
+readback of the fan's tachometer.
### Register 0x0: FAN\_PWM
@@ -34,11 +35,12 @@ i.e. a linear scaling from 0-100% to 0x0-0xFF
Mode: read-only
-Read this register to determine the fan tachometer reading (FIXME units TBD).
+Read this register to determine the fan tachometer reading in revolutions per
+minute (RPM).
| Bits | 15 - 0 |
| ---- | -------- |
-| Use | reserved |
+| Use | fan\_rpm |
## IP Block: `cds9k-led`