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Allow configuring GOPIO wake-up pins as floating during deep sleep #275

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Allow configuring GOPIO wake-up pins as floating during deep sleep #275

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Commits on Apr 4, 2024

  1. Allow configuring GOPIO wake-up pins as floating during deep sleep 

    According to guide `gpio_stay_*_map` are specifically there to prevent
pulling pins to a specific level and let them float during deep sleep.

https://docs.bekencorp.com/sdk_3.0.x/bk7238/build/en/latest/developer-guide/power_save/sleep_test.html

This allows any external low-power circuitry to change a pin level, as
required, to trigger the wake up

This requires changes in BDK and was implemented via fixup. Also, exposed
`gpio_stay_lo_map` parameter via `lt_deep_sleep_keep_floating_gpio` to
manage this configuration for pins in range P0-P31.
    @devgs
    devgs committed Apr 4, 2024
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