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SPI NAND chips may support octal "read from cache" and "program load" transfers. List the opcodes by defining the relevant macros describing these operations. However, due to the hardware available I had, 0x82 and 0xc2 are untested and given as reference, only 0xc4 could be (successfully) tested. Controllers supporting operations mixing SDR and DTR operations might even leverage octal DTR data I/O transfers. Acked-by: Tudor Ambarus <tudor.ambarus@linaro.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>