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PINMUX doubt

sumanth g
Intellectual 305 points

Pinmux configuration can be changed in uboot level and kernel level.

My doublt is.

1. when i changed the pinmux in the uboot level it is necessary to change the pinmux mux in kernel level(dts file or board specific file )

  • 0
    TI__Guru**** 161600 points

    Hi,

    This would depend on your use case.

    If you do a pinmux settings for lets say GPIO1_12 in u-boot & after that you want to use the same pinmux settings for GPIO1_12 in linux kernel, then it is NOT necessary to do the configurations again in dts. However you must verify that there are NO other modules that use & reconfigure the pin.  

    If you need different pinmux settings for GPIO1_12 in kernel, then you must overwrite the u-boot settings in dts file.

    Best Regards,

    Yordan