On Mon, Apr 13, 2015 at 04:40:15PM +0900, jiwang wrote:Due to missing of SDMA firmware, uart sdma mode is broken,
Hi SebastianHi Jiada,
Please make sure it is tagged stable. There is no hint that this is requiredMy question is how was this tested. Before your patch none of my boardsWe tested the patch set with our modified kernel tree,
were using DMA because RTS/CTS is not in use and this was a key
requirement. Now SDMA goes crazy. Is there a SDMA firmware required for
this to work?
and I find upstream kernel is not building SDMA firmware,
I will submit another patch to add it.
and as of it now, it breaks v4.0.
One question, where do you have the firmware from? I picked the one from FSL'sI got sdma firmware from FSL kernel tree.
v3.10 SDK and I ended up with FIFO-overflows so it was clearly the wrong one
(and the built-in SDMA firmware does not work as expected as you mentioned).
Is this firmware only required the imx6 series or also for older versions likethe firmware only supports imx6 series, AFAIK,
imx5?
Thanks,Sebastian
Jiada