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dts: bcm2712-rpi: The SoC gpiochips start at 10
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Make the BCM2712's onboard GPIOs start at gpiochip10, marking them out
as system resources and preventing accidental use by existing Pi 5
code.

Signed-off-by: Phil Elwell <[email protected]>
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@pelwell
pelwell committed Aug 5, 2024
1 parent 9493731 commit 90fc433
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1 change: 1 addition & 0 deletions arch/arm64/boot/dts/broadcom/bcm2712-rpi.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,7 @@
gpio3 = &pinctrl;
gpio4 = &pinctrl_aon;
gpiochip0 = &gpio;
gpiochip10 = &gio;
i2c = &i2c_arm;
i2c0 = &i2c0;
i2c1 = &i2c1;
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2 comments on commit 90fc433

@cbxbiker61
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Is "gpiochip10 = &gio;" right? Or should that be "gpiochip10 = &gpio;" ?

@pelwell
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@pelwell pelwell commented on 90fc433 Aug 5, 2024

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It's nice that you've got my back, but it is actually correct. gio is the label on the main SoC GPIO controller - gpio is the controller for the GPIOs on the 40-pin header.

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