[PATCH] PCI: dw-rockchip: Skip waiting for link up

Niklas Cassel
2025-01-13T11:01:24Z

The Root Complex specific device tree binding for pcie-dw-rockchip has the
'sys' interrupt marked as required.

The driver requests the 'sys' IRQ unconditionally, and errors out if not
provided.

Thus, we can unconditionally set use_linkup_irq before calling
dw_pcie_host_init().

This will skip the wait for link up (since the bus will be enumerated once
the link up IRQ is triggered), which reduces the bootup time.

Signed-off-by: Niklas Cassel <cassel@kernel.org>
---
drivers/pci/controller/dwc/pcie-dw-rockchip.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pcie-dw-rockchip.c b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
index 1170e1107508bd793b610949b0afe98516c177a4..62034affb95fbb965aad3cebc613a83e31c90aee 100644
--- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
+++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
@@ -435,6 +435,7 @@ static int rockchip_pcie_configure_rc(struct rockchip_pcie *rockchip)

pp = &rockchip->pci.pp;
pp->ops = &rockchip_pcie_host_ops;
+ pp->use_linkup_irq = true;

return dw_pcie_host_init(pp);
}

---
base-commit: 2adda4102931b152f35d054055497631ed97fe73
change-id: 20250113-rockchip-no-wait-403ffbc42313

Best regards,
--
Niklas Cassel <cassel@kernel.org>