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| author | Sven Peter <sven@svenpeter.dev> | 2021-10-19 18:22:53 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-10-27 10:08:17 +0200 |
| commit | 5a009fc1364170b240a4d351b345e69bb3728b3e (patch) | |
| tree | d93938cfd52380031fc517f08e010ac625a3cf13 /Documentation/powerpc/dscr.rst | |
| parent | 260aecd643fc129c1771cefdd2aaaedf0485fa59 (diff) | |
| download | linux-5a009fc1364170b240a4d351b345e69bb3728b3e.tar.bz2 | |
iommu/dart: Initialize DART_STREAMS_ENABLE
DART has an additional global register to control which streams are
isolated. This register is a bit redundant since DART_TCR can already
be used to control isolation and is usually initialized to DART_STREAM_ALL
by the time we get control. Some DARTs (namely the one used for the audio
controller) however have some streams disabled initially. Make sure those
work by initializing DART_STREAMS_ENABLE during reset.
Reported-by: Martin PoviĊĦer <povik@protonmail.com>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Hector Martin <marcan@marcan.st>
Link: https://lore.kernel.org/r/20211019162253.45919-1-sven@svenpeter.dev
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Documentation/powerpc/dscr.rst')
0 files changed, 0 insertions, 0 deletions