How to set MOSI pin default low

[weikeng-jimmy]

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

[igorpadykov]

Hi Jimmy

using dts settings it is not possible to set default pin value.

In general if spi module settings allows for such default configuration, it

can be done in uboot.

Best regards
igor
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