bindings/opp/opp.txt

1 Generic OPP (Operating Performance Points) Bindings
10 This document contain multiple versions of OPP binding and only one of them
45 phandle to a OPP table in their DT node. The OPP core will use this phandle to
50 phandle is available, then the same OPP table will be used for all power domains
57 * OPP Table Node
66 - OPP nodes: One or more OPP nodes describing voltage-current-frequency
68   reference an OPP.
71 - opp-shared: Indicates that device nodes using this OPP Table Node's phandle
74   but they share OPP tables.
76 - status: Marks the OPP table enabled/disabled.
79 * OPP Node
87   uniquely identify the OPP nodes exists. Devices like power domains must have
103   by angular brackets <>. The OPP binding doesn't provide any provisions to
113   provided for the same OPP. At runtime, the platform can pick a <name> and
124   Should only be set if opp-microvolt is set for the OPP.
129   the regulators, then this field is not required. The OPP binding doesn't
144   meaningful in OPP tables where opp-peak-kBps is present.
147   nanoseconds) for switching to this OPP from any other OPP.
149 - turbo-mode: Marks the OPP to be used only for turbo modes. Turbo mode is
154 - opp-suspend: Marks the OPP to be used during device suspend. If multiple OPPs
155   in the table have this, the OPP with highest opp-hz will be used.
158   the OPPs from the larger set present in the OPP table, based on the current
162   sub-group of hardware versions supported by the OPP. i.e. <sub-group A>,
163   <sub-group B>, etc. The OPP will be enabled if _any_ of these sub-groups match
175   and a non-zero output for _all_ the levels in a sub-group means the OPP is
177   will enable the OPP for all versions for the hardware.
181 - required-opps: This contains phandle to an OPP node in another device's OPP
183   OPP of a different device. It should not contain multiple phandles to the OPP
184   nodes in the same OPP table. This specifies the minimum required OPP of the
185   device(s), whose OPP's phandle is present in this property, for the
186   functioning of the current device at the current OPP (where this property is