\def MBEDTLS_PK_PARSE_EC_COMPRESSED Enable the support for parsing public keys of type Short Weierstrass (MBEDTLS_ECP_DP_SECP_XXX and MBEDTLS_ECP_DP_BP_XXX) which are using the compressed point format. This parsing is done through ECP module's functions.
As explained in the description of MBEDTLS_ECP_PF_COMPRESSED (in ecp.h) the only unsupported curves are MBEDTLS_ECP_DP_SECP224R1 and MBEDTLS_ECP_DP_SECP224K1.