diff options
| author | Sukumar Ghorai | 2011-01-28 11:12:07 +0100 |
|---|---|---|
| committer | Tony Lindgren | 2011-02-18 00:32:54 +0100 |
| commit | 317379a975c07fe63bc4f86dabd668df96ff3df2 (patch) | |
| tree | 04cf76a6b0c8caec5f3d7eb810dc165fdb96eaa5 /arch/arm/plat-omap/include/plat/gpmc.h | |
| parent | omap3: nand: prefetch in irq mode support (diff) | |
| download | kernel-qcow2-linux-317379a975c07fe63bc4f86dabd668df96ff3df2.tar.gz kernel-qcow2-linux-317379a975c07fe63bc4f86dabd668df96ff3df2.tar.xz kernel-qcow2-linux-317379a975c07fe63bc4f86dabd668df96ff3df2.zip | |
omap3: nand: configurable fifo threshold to gain the throughput
Configure the FIFO THREASHOLD value different for read and write to keep busy
both filling and to drain out of FIFO at reading and writing.
Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/include/plat/gpmc.h')
| -rw-r--r-- | arch/arm/plat-omap/include/plat/gpmc.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/plat-omap/include/plat/gpmc.h b/arch/arm/plat-omap/include/plat/gpmc.h index 9c060da0a873..a2434639063d 100644 --- a/arch/arm/plat-omap/include/plat/gpmc.h +++ b/arch/arm/plat-omap/include/plat/gpmc.h @@ -83,6 +83,9 @@ #define GPMC_IRQ_FIFOEVENTENABLE 0x01 #define GPMC_IRQ_COUNT_EVENT 0x02 +#define PREFETCH_FIFOTHRESHOLD_MAX 0x40 +#define PREFETCH_FIFOTHRESHOLD(val) ((val) << 8) + /* * Note that all values in this struct are in nanoseconds except sync_clk * (which is in picoseconds), while the register values are in gpmc_fck cycles. @@ -134,7 +137,7 @@ extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base); extern void gpmc_cs_free(int cs); extern int gpmc_cs_set_reserved(int cs, int reserved); extern int gpmc_cs_reserved(int cs); -extern int gpmc_prefetch_enable(int cs, int dma_mode, +extern int gpmc_prefetch_enable(int cs, int fifo_th, int dma_mode, unsigned int u32_count, int is_write); extern int gpmc_prefetch_reset(int cs); extern void omap3_gpmc_save_context(void); |