imx-cpufreq-dt.txt (927B)
1i.MX CPUFreq-DT OPP bindings 2================================ 3 4Certain 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 6the opp-supported-hw values for each OPP to check if the OPP is allowed. 7 8Required properties: 9-------------------- 10 11For 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 20Example: 21-------- 22 23opp_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}