imx233: increase max dma transfer size

The old max dma transfer size was set to 2^15 because allowing
values up to 2^16 would result in overflow of the transfer count
in many places. This was a problem with the old register headers
because the macros didn't make sure the result is contained in
the bitmask of the field. The new macro do so 2^16 will actually
end up being 0 which means 2^16 for the hardware. This is kind of
hacky but it works and I prefer that this stays a power of two
because setting it to 2^16-1 would be extremely weird.

Change-Id: I9ce5661c477a79ab52efd5c573948e2353117804

1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/target/arm/imx233/dma-imx233.h b/firmware/target/arm/imx233/dma-imx233.h
index a64b8a6..5caff74 100644
--- a/firmware/target/arm/imx233/dma-imx233.h
+++ b/firmware/target/arm/imx233/dma-imx233.h
@@ -142,7 +142,7 @@ struct imx233_dma_info_t
 
 /* A single descriptor cannot transfer more than 2^16 bytes but because of the
  * weird 0=64KiB, it's safer to restrict to 2^15 */
-#define IMX233_MAX_SINGLE_DMA_XFER_SIZE     (1 << 15)
+#define IMX233_MAX_SINGLE_DMA_XFER_SIZE     (1 << 16)
 
 void imx233_dma_init(void);
 void imx233_dma_reset_channel(unsigned chan);