From: Pali Rohár <pali@xxxxxxxxxx> Put the PCIe card into reset by asserting PERST# signal when unbinding driver. Signed-off-by: Pali Rohár <pali@xxxxxxxxxx> Signed-off-by: Marek Behún <kabel@xxxxxxxxxx> --- drivers/pci/controller/pci-aardvark.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index b3d89cb449b6..271ebecee965 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -1737,6 +1737,10 @@ static int advk_pcie_remove(struct platform_device *pdev) /* Free config space for emulated root bridge */ pci_bridge_emul_cleanup(&pcie->bridge); + /* Assert PERST# signal which prepares PCIe card for power down */ + if (pcie->reset_gpio) + gpiod_set_value_cansleep(pcie->reset_gpio, 1); + /* Disable outbound address windows mapping */ for (i = 0; i < OB_WIN_COUNT; i++) advk_pcie_disable_ob_win(pcie, i); -- 2.32.0
