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How to set MOSI pin default low

Question asked by JIMMY CHEN on Mar 15, 2019
Latest reply on Mar 15, 2019 by igorpadykov

Hi Sir,


My customer need I.MX8QX SPI0_MOSI default low for communicate to SPI device.

I try to modify pad/mux control register from kernel dts file as below .  But the MOSI pin default always is high. (Besides open-drain) .

How can I set MOSI pin default low ? Thanks~



26-25(SW CONFIG)                      6-5(pull)                   MOSI status


00b-DEFAULT                           10b-pull down              High


01b-OPEN-DRAIN                     10b-pull down             Always Low


10b-OPEN-DRAIN-INPUT         10b-pull down             High


11b-INOUT                                 10b-pull down             High