diff options
| author | Geraldo Nascimento <geraldogabriel@gmail.com> | 2026-06-16 12:25:28 -0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-10-13 11:54:25 -0500 |
| commit | 7f173bfa6d42742de4ab647e001232c1165ab28e (patch) | |
| tree | 919ec08433231b9f7e3bf4de279586813ed7ca4b /rust/kernel/alloc/kvec/errors.rs | |
| parent | cee9395acd8043be0644b25c34bfa86623f2b935 (diff) | |
PCI: rockchip-ep: Do not attempt 5.0 GT/s retraining
Drop the 5.0 GT/s Link Speed retraining code block from Rockchip PCIe EP
driver. The reason is that Shawn Lin from Rockchip has reiterated that
there may be danger of "catastrophic failure" in using their PCIe with 5.0
GT/s speeds.
While Rockchip has done so informally without issuing a proper errata, and
the particulars are thus unknown, this may cause data loss or worse.
This change is corroborated by RK3399 official datasheet [1], which states
maximum link speed for this platform is 2.5 GT/s.
[1] https://opensource.rock-chips.com/images/d/d7/Rockchip_RK3399_Datasheet_V2.1-20200323.pdf
Fixes: bd6e61df4b2e ("PCI: rockchip-ep: Improve link training")
Reported-by: Dragan Simic <dsimic@manjaro.org>
Reported-by: Shawn Lin <shawn.lin@rock-chips.com>
Link: https://lore.kernel.org/all/ffd05070-9879-4468-94e3-b88968b4c21b@rock-chips.com/
Signed-off-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/d994f8fb3481bbb8f3972f117334a6e8aea383fb.1781622998.git.geraldogabriel@gmail.com
Diffstat (limited to 'rust/kernel/alloc/kvec/errors.rs')
0 files changed, 0 insertions, 0 deletions