multiple adau1761 interface zedboard

Hi, looking at the zed_adau1761 driver in Linux, is there a restriction in the number of adau1761 codecs to be used?

Can i use 6 adau1761 using the Linux driver?

Is this modification sufficient (It works for 2 but i did not try more than 2 adau1761)?

static int zed_adau1761_probe(struct platform_device *pdev)

{

  //struct snd_soc_card *card = &zed_adau1761_card; for multi codec

struct snd_soc_card *card = kmemdup(&zed_adau1761_card, sizeof(zed_adau1761_card), GFP_KERNEL);

Thanks in advance.