1Command DB 2--------- 3 4Command DB is a database that provides a mapping between resource key and the 5resource address for a system resource managed by a remote processor. The data 6is stored in a shared memory region and is loaded by the remote processor. 7 8Some of the Qualcomm Technologies Inc SoC's have hardware accelerators for 9controlling shared resources. Depending on the board configuration the shared 10resource properties may change. These properties are dynamically probed by the 11remote processor and made available in the shared memory. 12 13The bindings for Command DB is specified in the reserved-memory section in 14devicetree. The devicetree representation of the command DB driver should be: 15 16Properties: 17- compatible: 18 Usage: required 19 Value type: <string> 20 Definition: Should be "qcom,cmd-db" 21 22- reg: 23 Usage: required 24 Value type: <prop encoded array> 25 Definition: The register address that points to the actual location of 26 the Command DB in memory. 27 28Example: 29 30 reserved-memory { 31 [...] 32 reserved-memory@85fe0000 { 33 reg = <0x0 0x85fe0000 0x0 0x20000>; 34 compatible = "qcom,cmd-db"; 35 no-map; 36 }; 37 }; 38