Hi Robin, Am Samstag, 30. März 2019, 00:24:16 CEST schrieb Robin Murphy: > 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... did you manage to find time for that test you wanted to do? Heiko _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
