To be able to use VIN with larger frame sizes CMA memory are needed for DMA. If this is not enabled trying to capture large frames can result in errors such as: rcar-vin e6ef0000.video: dma_alloc_coherent of size 8388608 failed A CMA area of 64MB are needed for v4l2-compliance to pass on all formats on the largest possible frame size of 2048x2048. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> --- arch/arm/configs/shmobile_defconfig | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/configs/shmobile_defconfig b/arch/arm/configs/shmobile_defconfig index 9c311c9..05ab191 100644 --- a/arch/arm/configs/shmobile_defconfig +++ b/arch/arm/configs/shmobile_defconfig @@ -32,6 +32,7 @@ CONFIG_HAVE_ARM_ARCH_TIMER=y CONFIG_NR_CPUS=8 CONFIG_AEABI=y CONFIG_HIGHMEM=y +CONFIG_CMA=y CONFIG_ZBOOT_ROM_TEXT=0x0 CONFIG_ZBOOT_ROM_BSS=0x0 CONFIG_ARM_APPENDED_DTB=y @@ -57,6 +58,8 @@ CONFIG_CAN_RCAR=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y +CONFIG_DMA_CMA=y +CONFIG_CMA_SIZE_MBYTES=64 CONFIG_SIMPLE_PM_BUS=y CONFIG_MTD=y CONFIG_MTD_BLOCK=y -- 2.10.2
