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Merge branch 'pci/controller/dwc-amd-mdb'

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- Assert PERST# on shutdown so any connected Endpoints are held in reset
  during shutdown (Sai Krishna Musham)

* pci/controller/dwc-amd-mdb:
  PCI: amd-mdb: Assert PERST# on shutdown
This commit is contained in:
Bjorn Helgaas 2026-06-23 17:32:06 -05:00
commit 1d0f97d5f8
1 changed files with 8 additions and 0 deletions
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8
drivers/pci/controller/dwc/pcie-amd-mdb.c
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@ -507,6 +507,13 @@ static int amd_mdb_pcie_probe(struct platform_device *pdev)
return amd_mdb_add_pcie_port(pcie, pdev);
}
static void amd_mdb_pcie_shutdown(struct platform_device *pdev)
{
struct amd_mdb_pcie *pcie = platform_get_drvdata(pdev);
gpiod_set_value_cansleep(pcie->perst_gpio, 1);
}
static const struct of_device_id amd_mdb_pcie_of_match[] = {
{
.compatible = "amd,versal2-mdb-host",
@ -521,6 +528,7 @@ static struct platform_driver amd_mdb_pcie_driver = {
.suppress_bind_attrs = true,
},
.probe = amd_mdb_pcie_probe,
.shutdown = amd_mdb_pcie_shutdown,
};
builtin_platform_driver(amd_mdb_pcie_driver);