On 30-08-16 18:38, Rob Herring wrote:
On Wed, Aug 24, 2016 at 10:13:27AM +0200, Mike Looijmans wrote:
Add devicetree property for early initialization of the fan controller
to prevent overheating, for example when resetting the board while the
fan was completely turned off.
Signed-off-by: Mike Looijmans <mike.looijmans@xxxxxxxx>
---
Documentation/devicetree/bindings/hwmon/max6650.txt | 5 +++++
1 file changed, 5 insertions(+)
The kernel boot seems kind of late to ensure your fan is running, but
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Thanks!
Well, "late's better than never," my grandma used to say when we visited :)
To put your mind at ease, the particular platform I'm using this for is
an xc7z045 (Zynq) where the ARMs running the Linux kernel will only
account for 0.5W, but once the logic awakens the chip can dissipate up
to 30W. The logic bitstream is usually on the rootfs, so kernel boot is
early enough for the fan to start spinning. And with the logic asleep,
it need not spin at all.
--
Mike Looijmans
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