CEC_RX_MSG_CMD
meson_ao_cec_write(ao_cec, CEC_RX_MSG_CMD, RX_DISABLE, &ret);
meson_ao_cec_write(ao_cec, CEC_RX_MSG_CMD, RX_NO_OP, &ret);
meson_ao_cec_write(ao_cec, CEC_RX_MSG_CMD, RX_ACK_CURRENT, &ret);
meson_ao_cec_write(ao_cec, CEC_RX_MSG_CMD, RX_NO_OP, &ret);