Patch Set 1:

Is that in the datasheet?

For example, in https://www.micron.com/-/media/documents/products/data-sheet/nor-flash/serial-nor/n25q/n25q_512mb_1_8v_65nm.pdf the first page only lists subsector, sector, and die erase under erase capability. Note that the datasheet later on does provide documentation for the bulk erase functionality, however, I think this is included due to a copy paste error. Another data point is provided by TN-25-01 (https://www.micron.com/-/media/client/global/documents/products/technical-note/nor-flash/tn2501_migrating_n25q_to_mt25ql.pdf): page 5 outlines the different commands and describes bulk erase being for single die devices only, and die erase for stacked devices only. TN-25-05 (https://www.micron.com/-/media/client/global/documents/products/technical-note/nor-flash/tn2505_n25q_mt25q_stacked_devices.pdf) also goes into stacked devices, and implies that the most you can erase at a time is a single die.

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