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    PDK API Guide for J721E
    
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Cache configuration so that MSMC can be used for main secure proxy backing memory and ring memory.
| subhdr | Magic and size for integrity check. | 
| msmc_cache_size | Fraction of msmc to be cache in /32 units. Rounds up. Since current msmc support /8 allocation this means that 1/32 rounds up to 1/8. | 
Data Fields | |
| struct tisci_boardcfg_substructure_header | subhdr | 
| uint8_t | msmc_cache_size | 
| struct tisci_boardcfg_substructure_header tisci_boardcfg_msmc::subhdr | 
| uint8_t tisci_boardcfg_msmc::msmc_cache_size |