ALSA: hda/tegra: Align BDL entry to 4KB boundary

[ Upstream commit 8d44e6044a0e885acdd01813768a0b27906d64fd ]

AZA HW may send a burst read/write request crossing 4K memory boundary.
The 4KB boundary is not guaranteed by Tegra HDA HW. Make SW change to
include the flag AZX_DCAPS_4K_BDLE_BOUNDARY to align BDLE to 4K
boundary.

Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Link: https://lore.kernel.org/r/20220905172420.3801-1-mkumard@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 773f4903550a06fac79a7c829f88b9a2f1e23f94..f0e556f2ccf69c61d60c613108e19415f315023e 100644 (file)
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -451,7 +451,8 @@ MODULE_DEVICE_TABLE(of, hda_tegra_match);
 static int hda_tegra_probe(struct platform_device *pdev)
 {
        const unsigned int driver_flags = AZX_DCAPS_CORBRP_SELF_CLEAR |
-                                         AZX_DCAPS_PM_RUNTIME;
+                                         AZX_DCAPS_PM_RUNTIME |
+                                         AZX_DCAPS_4K_BDLE_BOUNDARY;
        struct snd_card *card;
        struct azx *chip;
        struct hda_tegra *hda;