Structure at include/spi-mem.h, line 179 References: drivers/spi/atmel-quadspi.c, line 592 drivers/spi/ca_sflash.c, line 552 drivers/spi/cadence_qspi.c, line 331 drivers/spi/designware_spi.c, line 661 drivers/spi/fsl_qspi.c, line 790 drivers/spi/ich.c, line 977 drivers/spi/mtk_snfi_spi.c, line 294 drivers/spi/nxp_fspi.c, line 973 drivers/spi/octeon_spi.c, line 502 drivers/spi/spi-sifive.c, line 456 drivers/spi/stm32_qspi.c, line 522 drivers/spi/ti_qspi.c, line 483 include/spi-mem.h, line 179