mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-03 09:59:44 +00:00
c316f577b4
Enable GPMC's prefetch feature for NAND access. This speeds up NAND read access a lot by pre-fetching contents in the background and reading them through the FIFO address. The current implementation has two limitations: a) it only works in 8-bit mode b) it only supports read access Both is easily fixable by someone who has hardware to implement it. Note that U-Boot code uses non word-aligned buffers to read data into, and request read lengths that are not multiples of 4, so both partial buffers (head and tail) have to be addressed. Tested on AM335x hardware. Tested-by: Guido Martínez <guido@vanguardiasur.com.ar> Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar> Signed-off-by: Daniel Mack <zonque@gmail.com> [trini: Make apply again, use 'cs' fix pointed out by Guido] Signed-off-by: Tom Rini <trini@ti.com> |
||
|---|---|---|
| .. | ||
| bbm.h | ||
| concat.h | ||
| doc2000.h | ||
| docg4.h | ||
| flashchip.h | ||
| fsl_upm.h | ||
| fsmc_nand.h | ||
| mtd.h | ||
| nand.h | ||
| nand_bch.h | ||
| nand_ecc.h | ||
| ndfc.h | ||
| omap_elm.h | ||
| omap_gpmc.h | ||
| onenand.h | ||
| onenand_regs.h | ||
| partitions.h | ||
| samsung_onenand.h | ||
| st_smi.h | ||
| ubi.h | ||