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Check CIRCUITPY_ESP_FLASH_MODE settings on Espressif boards #8612
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@dhalbert

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@dhalbert

CIRCUITPY_ESP_FLASH_MODE used to only be used in a Makefile target for flashing the board. Now it is used to select the proper sdkconfig* file. Many ESP32-S3 boards, and maybe other ESP32-xx boards have it set to dio, when it may be able to be set to qio.

My understanding is that dio will work, just slower. (Am I misunderstanding?). However, if we fix the ones that are now dio to qio, we should see improved performance, I believe.

We should audit the board mpconfigboard.mk files to see which ones can be changed.

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esp32-s3espressifapplies to multiple Espressif chips

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