Hi Tushar,
On 09/12/2011 11:25 AM, Tushar Behera wrote:
Some of the boards under mach-exynos4 initialize frame-buffers
for which the memory requirement is more than 2MB (Nuri board requires
around 4MB, Origen requires around 2.6MB), hence the default dma pool
allocation size of 2MB is not sufficient. The consistent dma size is
hence increased to successfully allocate memory for those boards.
Depends on "ARM: Add init_consistent_dma_size()"
by Jon Medhurst (99d1717dd7fecf2b10195b0d864323b952b4eba0).
CC: Jon Medhurst<tixy@xxxxxxxxxx>
Signed-off-by: Tushar Behera<tushar.behera@xxxxxxxxxx>
---
arch/arm/mach-exynos4/cpu.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos4/cpu.c b/arch/arm/mach-exynos4/cpu.c
index 2d8a40c..45d8bfa 100644
--- a/arch/arm/mach-exynos4/cpu.c
+++ b/arch/arm/mach-exynos4/cpu.c
@@ -10,6 +10,7 @@
#include<linux/sched.h>
#include<linux/sysdev.h>
+#include<linux/dma-mapping.h>
#include<asm/mach/map.h>
#include<asm/mach/irq.h>
@@ -136,6 +137,7 @@ static void exynos4_idle(void)
void __init exynos4_map_io(void)
{
iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
+ init_consistent_dma_size(SZ_8M);
I think CMA is being used to allocate the FB in origen machine. In that
case, increasing the consistent memory is not useful. If the memory is
increased in the consistent DMA area, how can that be useful to s3cfb?
Regards,
Subash
/* initialize device information early */
exynos4_default_sdhci0();
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