diff options
| author | Cliff Cai <cliff.cai@analog.com> | 2008-05-17 08:36:52 (GMT) |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-05-17 08:36:52 (GMT) |
| commit | 86ad79321cbacdc4deebcde81849d19e26dd18e2 (patch) | |
| tree | 882410e4f212f064544697bf38242b943520f3a2 | |
| parent | c6c6f75d54ca734c409e336245662934c21fcee0 (diff) | |
| download | linux-86ad79321cbacdc4deebcde81849d19e26dd18e2.tar.xz | |
Blackfin arch: enable a choice to provide 4M DMA memory
support two cascaded AD73322 cards, more uncached DMA
memory is needed, so add a choice to provide 4M DMA memory
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
| -rw-r--r-- | arch/blackfin/Kconfig | 2 | ||||
| -rw-r--r-- | include/asm-blackfin/bfin-global.h | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index 785d8b4..b87634e 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -685,6 +685,8 @@ choice prompt "Uncached SDRAM region" default DMA_UNCACHED_1M depends on BFIN_DMA_5XX +config DMA_UNCACHED_4M + bool "Enable 4M DMA region" config DMA_UNCACHED_2M bool "Enable 2M DMA region" config DMA_UNCACHED_1M diff --git a/include/asm-blackfin/bfin-global.h b/include/asm-blackfin/bfin-global.h index 716df7c..a9248d8 100644 --- a/include/asm-blackfin/bfin-global.h +++ b/include/asm-blackfin/bfin-global.h @@ -37,7 +37,9 @@ #include <linux/linkage.h> #include <linux/types.h> -#if defined(CONFIG_DMA_UNCACHED_2M) +#if defined(CONFIG_DMA_UNCACHED_4M) +# define DMA_UNCACHED_REGION (4 * 1024 * 1024) +#elif defined(CONFIG_DMA_UNCACHED_2M) # define DMA_UNCACHED_REGION (2 * 1024 * 1024) #elif defined(CONFIG_DMA_UNCACHED_1M) # define DMA_UNCACHED_REGION (1024 * 1024) |