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STM32MP257 OCTOSPI MSEL is broken ?

Martin Devera
Associate III

Hi,

this one is similar to 

https://community.st.com/t5/stm32-mcus-products/ioselect-option-in-stm32h563-is-not-working/m-p/681099

but not the same. While testing OSPI1 on our MP257 board and our FSBL I found that
MSEL in OCTOSPI1->CR is ignored.

CSSEL and DMM are honored and works as expected but when DMM=0 then output signals
are the same on both IO[3:0] and IO[7:4].

Attached is analyzer output of CLK,CS,IO0,IO4 for transaction with relevant regs:

0x50430000: 00000f01

0x50430100: 04002101

AR was 0xfa0000 and 8 bytes was sent to DR.

Martin

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