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Add a strict_gpiod option #6117

Merged
merged 6 commits into from
Apr 22, 2024
Merged

Add a strict_gpiod option #6117

merged 6 commits into from
Apr 22, 2024

Commits on Apr 19, 2024

  1. ARM: dts: rp1: Add a gpio-ranges property 

    gpio-ranges declares a relationship between pinctrl and GPIO
controllers. It is required for "strict" mode to work.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
    @pelwell
    pelwell committed Apr 19, 2024
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  2. pinctrl: bcm2835: Add strict_gpiod module parameter 

    Setting strict_gpiod to Y makes libgpiod and the gpiod utilities behave
as documented, i.e. pins are returned to being GPIO inputs when they are
released.
drivers/pinctrl/bcm/pinctrl-bcm2835.c
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
    @pelwell
    pelwell committed Apr 19, 2024
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  3. pinctrl: rp1: Add strict_gpiod module parameter 

    Setting strict_gpiod to Y makes libgpiod and the gpiod utilities behave
as documented, i.e. pins are returned to being GPIO inputs when they are
released.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
    @pelwell
    pelwell committed Apr 19, 2024
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  4. ARM: dts: Add strict_gpiod dtparam 

    Setting strict_gpiod disables the GPIO output persistence, such that
pins are returned to being inputs when they are released. Note that
this applies to the GPIO/pinctrl driver for the user-facing GPIOs,
not the SoC GPIOs on Pi 5.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
    @pelwell
    pelwell committed Apr 19, 2024
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  5. overlays: README: Sort the dtparam names 

    There are enough dtparams now that not having them in alphabetical
order makes them hard to find.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
    @pelwell
    pelwell committed Apr 19, 2024
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  6. overlays: README: Document the strict_gpiod dtparam 

    Describe the function of the strict_gpiod dtparam.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
    @pelwell
    pelwell committed Apr 19, 2024
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