It would useful to be able to carry out GPIO fast state changes and simultaneous multiple bit changes.
This is achieved on some other Linux platforms by setting or clearing bits in registers mapped at memory addresses. The following is an example for a different SoC and openWRT. I don’t know if this is a good example. But I do know that similar performance is obtainable with the Raspberry Pi SoC
Is this possible on the WP8548 and other Sierra WP devices?