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| author | Daniel Lee Kruse <daniel.lee.kruse@protonmail.com> | 2020-09-30 05:36:35 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-12-03 07:29:12 +0100 |
| commit | dbf0b3a7b719eb3f72cb53c2ce7d34a012a9c261 (patch) | |
| tree | e143d12a1b399356a04eb1fec5fab0eb00b3c481 | |
| parent | a109073bb9ec69ed9ec6eb541485e1dae63c13b4 (diff) | |
| download | linux-dbf0b3a7b719eb3f72cb53c2ce7d34a012a9c261.tar.bz2 | |
media: cx23885: add more quirks for reset DMA on some AMD IOMMU
On AMD Family 15h (Models 30h-3fh), I/O Memory Management Unit
RiSC engine sometimes stalls, requiring a reset.
As result, MythTV and w-scan won't scan channels on the AMD Kaveri
APU with the Hauppauge QuadHD TV tuner card.
For the solution I added the Input/Output Memory Management Unit's PCI
Identity of 0x1423 to the broken_dev_id[] array, which is used by
a quirks logic meant to fix similar problems with other AMD
chipsets.
Signed-off-by: Daniel Lee Kruse <daniel.lee.kruse@protonmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
| -rw-r--r-- | drivers/media/pci/cx23885/cx23885-core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c index 16eb4ab0e73e..22f55a7840a6 100644 --- a/drivers/media/pci/cx23885/cx23885-core.c +++ b/drivers/media/pci/cx23885/cx23885-core.c @@ -2073,6 +2073,10 @@ static struct { * 0x1451 is PCI ID for the IOMMU found on Ryzen */ { PCI_VENDOR_ID_AMD, 0x1451 }, + /* According to sudo lspci -nn, + * 0x1423 is the PCI ID for the IOMMU found on Kaveri + */ + { PCI_VENDOR_ID_AMD, 0x1423 }, }; static bool cx23885_does_need_dma_reset(void) |