On 2019-03-27 12:00 pm, Heiko Stuebner wrote:
Hi,
Am Dienstag, 26. März 2019, 14:49:16 CET schrieb Katsuhiro Suzuki:
Hello Robin,
Sorry for inconvenience. Since I don't adhere enabling DMA for UARTs,
please revert my patch if you need.
I've dropped the patch from my queue now.
BTW, there are DMA properties in RK3328 device-tree like as this patch.
RK3328 UART DMA could not work correctly too...??
I remember Rockcihip dma-controllers having issues with burst-sizes
and flushing (there is a no-flushp option in pl330), so it's
possible that all share the same error up to rk3399 and rk3328
But so far no-one has shouted regarding the rk3328.
Let me be the first, then, I guess :)
I found an easy way to observe the problem on my 3399, and I've just
fired up my 3328 box with a 5.0 distro kernel to find that it behaves
the same. Basically just dump a large pile of text into 'less' on the
serial console, and scroll through line-by-line - certain lines get
dropped except for a few characters at the end.
I'll see if I can narrow it down a bit, starting with trying
broken-flushp...
Robin.
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/linux-rockchip
