vsc73xx_make_addr
offset = vsc73xx_make_addr(block, subblock, reg);
offset = vsc73xx_make_addr(block, subblock, reg);
cmd[0] = vsc73xx_make_addr(VSC73XX_CMD_SPI_MODE_WRITE, block, subblock);
cmd[0] = vsc73xx_make_addr(VSC73XX_CMD_SPI_MODE_READ, block, subblock);