Possibly something else to try is to change both the speed of the flash (it's in menuconfig under serial flasher config, iirc) as well as the speed of the PSRAM to 80MHz. Solved. Thanks for that hint. The reason was that the bootloader was compiled with flash frequency 40 MHz and not with 80 MHz wh...

Can you tell a bit more about the hardware you're doing this on (devboard or custom hw, ESP32 version, what flash/psram you're using) and what ESP-IDF this is? It feels like this is some glitch in setting the clock we need to work around somehow. I'm using a ESP32-S3-DEVKITC-1-N8R2-ND board with ES...

Given the fact it's in a function to do with the psram clock and the psram is on the same bus as the flash, I'm wondering if the actual issue is not that something mis-configures that bus, corrupting flash reads, and fetching the next instructions in that function result in garbage. Indeed, it seem...

Hi, I get a StoreProhibitedCause exception in ESP-IDF function spi_timing_config_set_psram_clock for an ESP32-S3 in following instruction: ee.stf.64.xp f2, f0, a2, a0 It seems to be an extended instruction which is not documented in "Xtensa Instruction Set Architecture (ISA) Reference Manual". Where...