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PCI: j721e: Validate max-link-speed from DT

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Use the new pcie_get_link_speed() helper to validate the value read from
the "max-link-speed" DT property.  If the value is missing or invalid,
fall back to Gen2 (speed = 2).  This prepares for the removal of the
range check in of_pci_get_max_link_speed().

Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260313165522.123518-4-18255117159@163.com
This commit is contained in:
Hans Zhang
2026-03-14 00:55:20 +08:00
committed by Manivannan Sadhasivam
parent 0f34f647f1
commit 126d04398c
1 changed files with 2 additions and 1 deletions
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3
drivers/pci/controller/cadence/pci-j721e.c
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@@ -202,7 +202,8 @@ static int j721e_pcie_set_link_speed(struct j721e_pcie *pcie,
int ret;
link_speed = of_pci_get_max_link_speed(np);
if (link_speed < 2)
if ((link_speed < 2) ||
(pcie_get_link_speed(link_speed) == PCI_SPEED_UNKNOWN))
link_speed = 2;
val = link_speed - 1;