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AM6546: Interface bit of OSPIs

Part Number: AM6546

My customer would like to know interface spec about OSPI of AM65xx correctly.

According to its data sheet, there are Two OSPI flash interfaces.

Though they expect each OSPI can support 8 bit interface connection.

It describes OSPI0 has 8-bit interface and OSPI1 has  4-bit interface.

8 bit interface cannot be supported by OSPI1(4 bit only)

Is their understanding correct ?