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authorCédric Le Goater <clg@kaod.org>2016-09-13 19:39:22 +0200
committerStewart Smith <stewart@linux.vnet.ibm.com>2016-12-08 13:03:23 +1100
commit33fada1a6f4b1f5fcf131765f37fcb76c079bfb2 (patch)
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parentaed1fbe848ec7dcfef5c2831ab779ae9c21b41f6 (diff)
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sensor: add a family field in the handler
Currently, we are hijacking the last bit of the resource field of the sensor handler to differentiate the sensor families and route the opal_sensor_read() call to the appropriate component. Let's reserve the last 3bits and provide an API to set the sensor family for current use and future use. This gives us a maximum of 8 families and 32 resource classes. The FSP uses 15, so we should be fine for a while. Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'doc')
-rw-r--r--doc/device-tree/ibm,opal/sensors.rst9
1 files changed, 6 insertions, 3 deletions
diff --git a/doc/device-tree/ibm,opal/sensors.rst b/doc/device-tree/ibm,opal/sensors.rst
index cd30ffc..c29b88f 100644
--- a/doc/device-tree/ibm,opal/sensors.rst
+++ b/doc/device-tree/ibm,opal/sensors.rst
@@ -24,9 +24,12 @@ Each node has a minimum set of properties describing the sensor :
OPAL_SENSOR_READ call to be used by Linux to get the value of
a sensor attribute. A sensor handler has the following encoding : ::
- | Attr. | Res. | Resource |
- | Number | Class | Id |
- |--------|--------|----------------|
+ | Attr. |Fam|Res. | Resource |
+ | Number |ily|Class| Id |
+ |--------|---|-----|----------------|
+
+ The sensor family (FSP, DTS, etc) is used to dispatch the call to
+ the appriopriate skiboot component.
- a "sensor-status" property giving the state of the sensor. The
status bits have the slightly meanings depending on the resource