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Add dtparm to enable bootloader eeprom on CM4S#7241

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pelwell merged 1 commit intoraspberrypi:rpi-6.12.yfrom
nbuchwitz:devel/cm4s-eeprom
Feb 17, 2026
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Add dtparm to enable bootloader eeprom on CM4S#7241
pelwell merged 1 commit intoraspberrypi:rpi-6.12.yfrom
nbuchwitz:devel/cm4s-eeprom

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@nbuchwitz nbuchwitz commented Feb 15, 2026

In order to make rpi-eeprom-update work on CM4S too, the eeprom needs to be enabled, besides the CM4 specific extras (already outlined by rpi-eeprom-update).

Add a GPIO hog on GPIO 57 (active high, output-low) to enable the onboard bootloader EEPROM on CM4S. The hog is disabled by default and can be activated via dtparam=enable_eeprom=on in config.txt.

Patch for rpi-eeprom-update: raspberrypi/rpi-eeprom#806

…er EEPROM

Add a GPIO hog on GPIO 57 (active high, output-low) to enable the onboard
bootloader EEPROM on CM4S. The hog is disabled by default and can be
activated via dtparam=enable_eeprom=on in config.txt.

Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>
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pelwell commented Feb 16, 2026

I'm happy with this change in isolation, and I'll merge if it fits with @timg236's plans for the eeprom updater.

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timg236 commented Feb 17, 2026

Yes a GPIO hog makes sense here

@pelwell pelwell merged commit f45c4eb into raspberrypi:rpi-6.12.y Feb 17, 2026
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@nbuchwitz nbuchwitz deleted the devel/cm4s-eeprom branch February 17, 2026 11:43
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3 participants