diff options
Diffstat (limited to 'Documentation/devicetree/bindings/opp/opp.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/opp/opp.txt | 27 |
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>; }; }; |