PCI: rockchip: 5.0 GT/s speed may be dangerous
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- v3 Latest2 patches 5 repliesIn review
- v24 patches 14 repliesApplied
- v13 patches 17 repliesSuperseded
Changes in v3 from the cover letter
- Clarify warning message even though Rockchip won't disclose details
- Drop DT changes as they were applied as subset by Heiko
- Link to v2: https://lore.kernel.org/all/[email protected]/
Patches in v3 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | PCI: rockchip: limit RK3399 to 2.5 GT/s to avoid data lossdrivers/ | +8 | 0 replies | |
| 2/2 | PCI: rockchip-host: comment danger of 5.0 GT/s speeddrivers/ | +4 | 5 replies |
Reviews trailers per patch
All 2 patches have a Reviewed-by or Acked-by.
| Patch | Dragan Simic |
|---|---|
| 1/2 | R-b |
| 2/2 | R-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH v3 0/2] PCI: rockchip: 5.0 GT/s speed may be dangerous
Dragan Simic already had warned me of potential issues with 5.0 GT/s speed operation in Rockchip PCIe. However, in recent interactions with Shawn Lin from Rockchip it came to my attention there's grave danger in the unknown errata regarding 5.0 GT/s operational speed of their PCIe core. Even if the odds are low, to contain any damage, let's prevent 5.0 GT/s operation as well as add a comment to Root Complex driver core, documenting this danger of data loss or worse.
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Changes in v3:
- Clarify warning message even though Rockchip won't disclose details
- Drop DT changes as they were applied as subset by Heiko
- Link to v2: https://lore.kernel.org/all/[email protected]/
Changes in v2:
- hard limit to 2.5 GT/s, not just warn
- add Reported-by: and Reviewed-by: Dragan Simic
- remove redundant declaration of max-link-speed from helios64 dts
- fix Link: of helios64 patch
- simplify RC mode comment
- Link to v1: https://lore.kernel.org/all/aRhR79u5BPtRRFw3@geday/
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Geraldo Nascimento (2):
PCI: rockchip: limit RK3399 to 2.5 GT/s to avoid data loss
PCI: rockchip-host: comment danger of 5.0 GT/s speed
drivers/pci/controller/pcie-rockchip-host.c | 4 ++++ drivers/pci/controller/pcie-rockchip.c | 10 ++++++++-- 2 files changed, 12 insertions(+), 2 deletions(-)
Signature · 1 line
2.52.0