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[spi_nand_flash] Add support for nand flash GD5F8GM8xExxG (IEC-539) #749

Description

@zhenzeliu

Is your feature request related to a problem?

Hi we are using GD5F8GM8xExxG SPI NAND flash chip from GigaDevice in our project. But it's not supported by spi_nand_flash v1.0.3 (the latest by 19.May.2026). May I ask is there any plan for 8Gb NAND flash support in the future?

GD5F8GM8xExxG datasheet here: link

Thanks for your time and reply! :D

Describe the solution you'd like.

Officially add the support for GD5F8GM8xExxG in spi_nand_flash component. I setup the hardware platform with 1 ESP32P4 nano board and GD5F8GM8xExxG, hacked some sources in spi_nand_flash and seems like working properly but need to further test.

Describe alternatives you've considered.

No response

Additional context.

No response

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