* Sukumar Ghorai <s-ghorai@xxxxxx> [100927 06:30]: > This patch enable prefetch-irq mode for NAND. > --- a/drivers/mtd/nand/Kconfig > +++ b/drivers/mtd/nand/Kconfig > @@ -112,6 +112,9 @@ config MTD_NAND_OMAP_PREFETCH > help > The NAND device can be accessed for Read/Write using GPMC PREFETCH engine > to improve the performance. > + GPMC PREFETCH can be configured eigther in MPU interrupt mode or in DMA > + interrupt mode. If not selected any of them prefetch will be used in > + polling mode. > > config MTD_NAND_OMAP_PREFETCH_DMA > depends on MTD_NAND_OMAP_PREFETCH > @@ -120,7 +123,16 @@ config MTD_NAND_OMAP_PREFETCH_DMA > help > The GPMC PREFETCH engine can be configured eigther in MPU interrupt mode > or in DMA interrupt mode. > - Say y for DMA mode or MPU mode will be used > + Say y for DMA mode > + > +config MTD_NAND_OMAP_PREFETCH_IRQ > + depends on MTD_NAND_OMAP_PREFETCH && !MTD_NAND_OMAP_PREFETCH_DMA > + bool "IRQ mode" > + default n > + help > + The GPMC PREFETCH engine can be configured eigther in MPU interrupt mode > + or in DMA interrupt mode. > + Say y for IRQ mode > > config MTD_NAND_IDS > tristate The configuration to use the prefetch IRQ should be passed in the platform_data from the board-*.c files. What if you want to to boot a distro kernel on omap2, 3 and 4 and only some of the boards can use the prefetch interrupt? Tony -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
