1 i.MX CPUFreq-DT OPP bindings
2 ================================
3
4 Certain i.MX SoCs support different OPPs depending on the "market segment" and
5 "speed grading" value which are written in fuses. These bits are combined with
6 the opp-supported-hw values for each OPP to check if the OPP is allowed.
7
8 Required properties:
9 --------------------
10
11 For each opp entry in 'operating-points-v2' table:
12 - opp-supported-hw: Two bitmaps indicating:
13 - Supported speed grade mask
14 - Supported market segment mask
15 0: Consumer
16 1: Extended Consumer
17 2: Industrial
18 3: Automotive
19
20 Example:
21 --------
22
23 opp_table {
24 compatible = "operating-points-v2";
25 opp-1000000000 {
26 opp-hz = /bits/ 64 <1000000000>;
27 /* grade >= 0, consumer only */
28 opp-supported-hw = <0xf>, <0x3>;
29 };
30
31 opp-1300000000 {
32 opp-hz = /bits/ 64 <1300000000>;
33 opp-microvolt = <1000000>;
34 /* grade >= 1, all segments */
35 opp-supported-hw = <0xe>, <0x7>;
36 };
37 }
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.