The following patches fix tegra-hda on legacy tegra devices.
Two issues were discovered preventing tegra-hda from functioning:
-The hda clocks on tegra30 were assigned to clk_m and running at too low
of a rate to function.
-The tegra-hda encounters an input/output error when opening a stream.
Since the only mainline device that used tegra-hda until recently was the
t124, it is unknown exactly when this was broken. Fortunately a recent
patch was submitted that fixed the issue only on t194 devices. We can
apply it to the tegra30-hda device to resolve the issue across the board.
Note that downstream devices used the spdif device instead of hda for hdmi
audio. The spdif device lacks a driver on mainline.
-Checkpatch seems to have issues finding [1], but git show has no issue.
[1] commit 60019d8c650d ("ALSA: hda/tegra: workaround playback failure on
Tegra194")
Changelog:
v2:
-Added ack and reviewed-by from Jon
-Updated fix to apply to tegra30-hda vice universally (Thanks Jon)
-Updated commit to include comments from hardware team (Thanks Sameer)
-Cleaned up commit messages
Peter Geis (2):
clk: tegra30: Add hda clock default rates to clock driver
ALSA: hda/tegra: fix tegra-hda on tegra30 soc
drivers/clk/tegra/clk-tegra30.c | 2 ++
sound/pci/hda/hda_tegra.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
--
2.25.1
