bindings/power/mali-opp.txt

1 # SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
3 # (C) COPYRIGHT 2017, 2019-2021 ARM Limited. All rights reserved.
17 # http://www.gnu.org/licenses/gpl-2.0.html.
30 - compatible: Allow OPPs to express their compatibility. It should be:
31   "operating-points-v2", "operating-points-v2-mali".
33 - OPP nodes: One or more OPP nodes describing voltage-current-frequency
39 This defines voltage-current-frequency combinations along with other related
43 - opp-hz: Nominal frequency in Hz, expressed as a 64-bit big-endian integer.
48 - opp-hz-real: List of one or two real frequencies in Hz, expressed as 64-bit
49   big-endian integers. They shall correspond to the clocks declared under
52 - opp-core-mask: Shader core mask. If neither this or opp-core-count are present
55 - opp-core-count: Number of cores to use for this OPP. If this is present then
57   the GPU hardware. An opp-core-count value of 0 is not permitted.
59   If neither this nor opp-core-mask are present then all shader cores will be
62   If both this and opp-core-mask are present then opp-core-mask is ignored.
64 - opp-microvolt: List of one or two voltages in micro Volts. They shall correspond
75 - opp-microvolt-<name>: Named opp-microvolt property. This is exactly similar to
76   the above opp-microvolt property, but allows multiple voltage ranges to be
78   matching opp-microvolt-<name> property will be enabled for all OPPs. If the
80   opp-microvolt-<name> properties, then opp-microvolt property shall be used, if
83 - opp-microamp: The maximum current drawn by the device in microamperes
85   maximum operating temperature range etc.) as necessary. This may be used to
88   Should only be set if opp-microvolt is set for the OPP.
95 - opp-microamp-<name>: Named opp-microamp property. Similar to
96   opp-microvolt-<name> property, but for microamp instead.
98 - clock-latency-ns: Specifies the maximum possible transition latency (in
101 - turbo-mode: Marks the OPP to be used only for turbo modes. Turbo mode is
106 - opp-suspend: Marks the OPP to be used during device suspend. Only one OPP in
109 - opp-mali-errata-1485982: Marks the OPP to be selected for suspend clock.
114 - opp-supported-hw: This enables us to select only a subset of OPPs from the
116   still can't have multiple nodes with the same opp-hz value in OPP table.
134 - status: Marks the node enabled/disabled.
139 	compatible = "operating-points-v2", "operating-points-v2-mali";
142 		opp-hz = /bits/ 64 <112500000>;
143 		opp-hz-real = /bits/ 64 <450000000>;
144 		opp-microvolt = <820000>;
145 		opp-core-mask = /bits/ 64 <0x1>;
146 		opp-suspend;
147 		opp-mali-errata-1485982;
150 		opp-hz = /bits/ 64 <225000000>;
151 		opp-hz-real = /bits/ 64 <450000000>;
152 		opp-microvolt = <820000>;
153 		opp-core-count = <2>;
156 		opp-hz = /bits/ 64 <450000000>;
157 		opp-hz-real = /bits/ 64 <450000000>;
158 		opp-microvolt = <820000>;
159 		opp-core-mask = /bits/ 64 <0xf>;
162 		opp-hz = /bits/ 64 <487500000>;
163 		opp-microvolt = <825000>;
166 		opp-hz = /bits/ 64 <525000000>;
167 		opp-microvolt = <850000>;
170 		opp-hz = /bits/ 64 <562500000>;
171 		opp-microvolt = <875000>;
174 		opp-hz = /bits/ 64 <600000000>;
175 		opp-microvolt = <900000>;
182 	compatible = "operating-points-v2", "operating-points-v2-mali";
185 		opp-hz = /bits/ 64 <50000000>;
186 		opp-hz-real = /bits/ 64 <50000000>, /bits/ 64 <45000000>;
187 		opp-microvolt = <820000>, <800000>;
188 		opp-core-mask = /bits/ 64 <0xf>;
191 		opp-hz = /bits/ 64 <40000000>;
192 		opp-hz-real = /bits/ 64 <40000000>, /bits/ 64 <35000000>;
193 		opp-microvolt = <720000>, <700000>;
194 		opp-core-mask = /bits/ 64 <0x7>;
197 		opp-hz = /bits/ 64 <30000000>;
198 		opp-hz-real = /bits/ 64 <30000000>, /bits/ 64 <25000000>;
199 		opp-microvolt = <620000>, <700000>;
200 		opp-core-mask = /bits/ 64 <0x3>;