SCMI_MAX_MSG_PAYLD_SIZE
SCMI_MAX_MSG(sc), SCMI_MAX_MSG_PAYLD_SIZE(sc), SCMI_MAX_MSG_TIMEOUT_MS(sc));
if (tx_payld_sz > SCMI_MAX_MSG_PAYLD_SIZE(sc) ||
bzero(&req->msg, sizeof(req->msg) + SCMI_MAX_MSG_PAYLD_SIZE(sc));
#define SCMI_MAX_MSG_REPLY_SIZE(sc) (SCMI_MAX_MSG_PAYLD_SIZE((sc)) + sizeof(uint32_t))