[PATCH v3] PCI: dw-rockchip: Enable async probe by default

[Shawn Lin]

在 2026/02/26 星期四 18:10, Anand Moon 写道:
> Rockchip DWC PCIe driver currently performs synchronous link training for
> combo PHYs (PCIe 3.0/2.0 and SATA 3.0) during boot. This process waits for
> the link to be fully established, adding several milliseconds to the boot
> sequence. To optimize boot time, this change enables asynchronous probing,
> allowing link establishment to proceed in the background while the kernel
> continues probing other devices.

Reviewed-by: Shawn Lin <shawn.lin at rock-chips.com>

> 
> Cc: Grimmauld <grimmauld at grimmauld.de>
> Cc: Niklas Cassel <cassel at kernel.org>
> Tested-by: Grimmauld <grimmauld at grimmauld.de>
> Signed-off-by: Anand Moon <linux.amoon at gmail.com>
> ---
> v3: update the commit message to describe the changs.
>      added tested by Grimmauld.
>      https://lore.kernel.org/all/20240809073610.2517-1-linux.amoon@gmail.com/
> v2: update the commit message to describe the changs.
> ---
>   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 5b17da63151d5..c31e0e9848327 100644
> --- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
> +++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
> @@ -746,6 +746,7 @@ static struct platform_driver rockchip_pcie_driver = {
>   		.name	= "rockchip-dw-pcie",
>   		.of_match_table = rockchip_pcie_of_match,
>   		.suppress_bind_attrs = true,
> +		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
>   	},
>   	.probe = rockchip_pcie_probe,
>   };
> 
> base-commit: f4d0ec0aa20d49f09dc01d82894ce80d72de0560
>