[esp32] Document minimum_chip_revision option and chip revision logging #5828
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Pull request overview
Documents the new minimum_chip_revision configuration option for ESP32 and the chip revision logging feature added at startup.
Key Changes
- Added
minimum_chip_revisionoption for ESP32 to specify minimum required chip revision - Documented flash size and IRAM savings benefits for revision 3.0+
- Included instructions for finding chip revision via boot logs or esptool
swoboda1337
approved these changes
Jan 5, 2026
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Description:
Document the new
minimum_chip_revisionoption for ESP32 and the chip revision logging at startup.This option allows users to specify the minimum ESP32 chip revision required for their firmware. Setting it to
3.0or higher:The chip revision is now also logged at startup (e.g.,
ESP32 Chip: ESP32 r3.0, 2 core(s)) so users can easily identify their chip revision.Related issue (if applicable): N/A
Pull request in esphome with YAML changes (if applicable):
Checklist:
I am merging into
nextbecause this is new documentation that has a matching pull-request in esphome as linked above.or
I am merging into
currentbecause this is a fix, change and/or adjustment in the current documentation and is not for a new component or feature.Link added in
/components/_index.mdwhen creating new documents for new components or cookbook.