linux-kernel - [PATCH linu-next v1] PCI: dw-rockchip: Enable async probe by default

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Date: Tue, 25 Jun 2024 21:27:57 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Heiko Stuebner <heiko@...ech.de>
Cc: Anand Moon <linux.amoon@...il.com>,
	linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH linu-next v1] PCI: dw-rockchip: Enable async probe by default

Rockchip PCIe driver lets waits for the combo PHY link like PCIe 3.0,
PCIe 2.0 and SATA 3.0 controller to be up during the probe this
consumes several milliseconds during boot.

Establishing a PCIe link can take a while; allow asynchronous probing so
that link establishment can happen in the background while other devices
are being probed.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
 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 61b1acba7182..74a3e9d172a0 100644
--- a/drivers/pci/controller/dwc/pcie-dw-rockchip.c
+++ b/drivers/pci/controller/dwc/pcie-dw-rockchip.c
@@ -367,6 +367,7 @@ 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,
 };
-- 
2.44.0