When no endpoint is connected on i.MX7D PCIe, chip would be freeze when do
the dummy write in dw_pcie_pme_turn_off() to issue a PME_Turn_Off Msg TLP.
And, i.MX7D has the hang problem in the L2 state poll after PME_Turn_Off
is sent out when one endpoint device is connected.
Add quirk flags to issue the PME_Turn_Off only when link is up and don't
do the L2 state poll to avoid problems on i.MX7D platform.
Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
---
drivers/pci/controller/dwc/pci-imx6.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index aade80010cbe..779b6c7a501d 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1706,6 +1706,7 @@ static const struct imx_pcie_drvdata drvdata[] = {
.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
.enable_ref_clk = imx7d_pcie_enable_ref_clk,
.core_reset = imx7d_pcie_core_reset,
+ .quirk = QUIRK_NOLINK_NOPME | QUIRK_NOL2POLL_IN_PM,
},
[IMX8MQ] = {
.variant = IMX8MQ,
--
2.37.1
