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| author | Koen Vandeputte <koen.vandeputte@ncentric.com> | 2018-02-22 12:20:16 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2018-02-22 12:46:49 +0100 |
| commit | efb362cd93b0c3d308685a37417fb62991878f4c (patch) | |
| tree | 02e4fbe0a9ccbd63f1e0356fef7a5506dfad578c /include | |
| parent | aad1f11efe1c0f761d3454ac371fd98e65284b35 (diff) | |
| download | upstream-efb362cd93b0c3d308685a37417fb62991878f4c.tar.gz upstream-efb362cd93b0c3d308685a37417fb62991878f4c.tar.bz2 upstream-efb362cd93b0c3d308685a37417fb62991878f4c.zip | |
imx6: disable dma on uart
When this target got updated to 4.14, this patch got removed to
re-evaluate if it was still needed.
Extensive testing now shows this issue is still present.
Let's re-add the patch to fix it for now.
As the uart bus is very low bandwidth .. performance impact is negligible.
Boot log:
[ 22.513051] imx-uart 2020000.serial: DMA transaction error.
[ 22.522721] imx-uart 2020000.serial: DMA transaction error.
As a sidenote:
The patch mentiones an issue with RS485, but the bootlog
errors above were recorded with the uart ports in standard RS232 mode.
Compile/Run-tested on imx6/GW5200
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions