From: George McCollister <george.mccollister@konsulko.com>
Date: Fri, 30 Jan 2026 15:38:04 +0000 (-0600)
Subject: pci: pcie_cdns_ti: Add support to provide refclk to PCIe connector
X-Git-Tag: v2026.04-rc2~21^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d07fe1390b352b897683f3eaf7ee62786474144;p=thirdparty%2Fu-boot.git

pci: pcie_cdns_ti: Add support to provide refclk to PCIe connector

Add support to provide refclk to PCIe connector.

Based on: https://lore.kernel.org/r/20210308063550.6227-5-kishon@ti.com

Signed-off-by: George McCollister <george.mccollister@konsulko.com>
Tested-by: Bryan Brattlof <bb@ti.com>
---

diff --git a/drivers/pci/pcie_cdns_ti.c b/drivers/pci/pcie_cdns_ti.c
index 9d1d123a18c..ff56ba3930c 100644
--- a/drivers/pci/pcie_cdns_ti.c
+++ b/drivers/pci/pcie_cdns_ti.c
@@ -742,6 +742,20 @@ static int pcie_cdns_ti_probe(struct udevice *dev)
 	}
 	generic_phy_reset(&serdes);
 	generic_phy_init(&serdes);
+
+	clk = devm_clk_get_optional(dev, "pcie_refclk");
+	if (IS_ERR(clk)) {
+		ret = PTR_ERR(clk);
+		dev_err(dev, "failed to get pcie_refclk\n");
+		return ret;
+	}
+
+	ret = clk_prepare_enable(clk);
+	if (ret) {
+		dev_err(dev, "failed to enable pcie_refclk\n");
+		return ret;
+	}
+
 	generic_phy_power_on(&serdes);
 
 	ret = pcie_cdns_ti_ctrl_init(pcie);