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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-12-12 20:44:01 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-12-12 20:44:01 +0100
commit57def856f33a5b50c71d3d40faf73d00b034e29c (patch)
tree9e4f4298d85aa66032f6794226c5ff5496926ade /Documentation
parent852b7fa228567f397fe5e5a1e060794e0f0125fe (diff)
parente231f8d7ed9a01280d18cd897ae0bbb4118bc954 (diff)
downloadlinux-57def856f33a5b50c71d3d40faf73d00b034e29c.tar.gz
Merge branch 'pm-opp'
* pm-opp:
  PM / OPP: Don't WARN on multiple calls to dev_pm_opp_set_regulators()
  PM / OPP: Allow platform specific custom set_opp() callbacks
  PM / OPP: Separate out _generic_set_opp()
  PM / OPP: Add infrastructure to manage multiple regulators
  PM / OPP: Pass struct dev_pm_opp_supply to _set_opp_voltage()
  PM / OPP: Manage supply's voltage/current in a separate structure
  PM / OPP: Don't use OPP structure outside of rcu protected section
  PM / OPP: Reword binding supporting multiple regulators per device
  PM / OPP: Fix incorrect cpu-supply property in binding
  PM / OPP: Pass opp_table to dev_pm_opp_put_regulator()
  PM / OPP: fix debug/error messages in dev_pm_opp_of_get_sharing_cpus()
  PM / OPP: make _of_get_opp_desc_node() a static function
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/opp/opp.txt27
1 files changed, 19 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt
index ee91cbdd95ee..9f5ca4457b5f 100644
--- a/Documentation/devicetree/bindings/opp/opp.txt
+++ b/Documentation/devicetree/bindings/opp/opp.txt
@@ -86,8 +86,14 @@ Optional properties:
   Single entry is for target voltage and three entries are for <target min max>
   voltages.
 
-  Entries for multiple regulators must be present in the same order as
-  regulators are specified in device's DT node.
+  Entries for multiple regulators shall be provided in the same field separated
+  by angular brackets <>. The OPP binding doesn't provide any provisions to
+  relate the values to their power supplies or the order in which the supplies
+  need to be configured and that is left for the implementation specific
+  binding.
+
+  Entries for all regulators shall be of the same size, i.e. either all use a
+  single value or triplets.
 
 - opp-microvolt-<name>: Named opp-microvolt property. This is exactly similar to
   the above opp-microvolt property, but allows multiple voltage ranges to be
@@ -104,10 +110,13 @@ Optional properties:
 
   Should only be set if opp-microvolt is set for the OPP.
 
-  Entries for multiple regulators must be present in the same order as
-  regulators are specified in device's DT node. If this property isn't required
-  for few regulators, then this should be marked as zero for them. If it isn't
-  required for any regulator, then this property need not be present.
+  Entries for multiple regulators shall be provided in the same field separated
+  by angular brackets <>. If current values aren't required for a regulator,
+  then it shall be filled with 0. If current values aren't required for any of
+  the regulators, then this field is not required. The OPP binding doesn't
+  provide any provisions to relate the values to their power supplies or the
+  order in which the supplies need to be configured and that is left for the
+  implementation specific binding.
 
 - opp-microamp-<name>: Named opp-microamp property. Similar to
   opp-microvolt-<name> property, but for microamp instead.
@@ -386,10 +395,12 @@ Example 4: Handling multiple regulators
 / {
 	cpus {
 		cpu@0 {
-			compatible = "arm,cortex-a7";
+			compatible = "vendor,cpu-type";
 			...
 
-			cpu-supply = <&cpu_supply0>, <&cpu_supply1>, <&cpu_supply2>;
+			vcc0-supply = <&cpu_supply0>;
+			vcc1-supply = <&cpu_supply1>;
+			vcc2-supply = <&cpu_supply2>;
 			operating-points-v2 = <&cpu0_opp_table>;
 		};
 	};