boards/seeed-sensecap-indicator.json was the only board file carrying
"f_boot": "120000000L". Under platformio/espressif32 6.x that key only
selected a prebuilt bootloader image. Under pioarduino HybridCompile,
which this board uses since it moved to the 3.3.11-based core (#11238),
f_boot becomes the compile-time clock for both flash and PSRAM, so every
2.8 build of the Indicator is compiled with CONFIG_ESPTOOLPY_FLASHFREQ_120M,
CONFIG_SPI_FLASH_HPM_ON and CONFIG_SPIRAM_SPEED_120M (octal PSRAM at
120 MHz is an experimental ESP-IDF feature). The device hangs in early
flash/PSRAM init before the boot watchdog is disarmed and reset-loops
with RTCWDT_RTC_RST and no bootloader output, also after a full erase
and install.
Without the key the build falls back to f_flash (80 MHz) like every
other ESP32-S3 board, reports "80MHz for both Flash and PSRAM", and
produces a bootloader byte-identical to the T-Deck's 2.8 bootloader.
Fixes#11691
Ben Meadors
a6ef5d1ce6