1family:
2  - name: sifive_freedom
3    series:
4      - name: fe300
5        socs:
6          - name: fe310
7      - name: fu500
8        socs:
9          - name: fu540
10            cpuclusters:
11              - name: e51
12              - name: u54
13      - name: fu700
14        socs:
15          - name: fu740
16            cpuclusters:
17              - name: s7
18              - name: u74
19