From b66902b661715601b73131179a26ebb2c2d80805 Mon Sep 17 00:00:00 2001
From: mmel <mmel@FreeBSD.org>
Date: Tue, 4 Oct 2016 09:14:48 +0000
Subject: [PATCH] TEGRA: Fix PCIe link timeout.

MFC after: 2 weeks
---
 sys/arm/nvidia/tegra_pcie.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/arm/nvidia/tegra_pcie.c b/sys/arm/nvidia/tegra_pcie.c
index fd8eefdc73d2..56dff833f375 100644
--- a/sys/arm/nvidia/tegra_pcie.c
+++ b/sys/arm/nvidia/tegra_pcie.c
@@ -201,7 +201,8 @@ __FBSDID("$FreeBSD$");
 #define	 RP_LINK_CONTROL_STATUS_DL_LINK_ACTIVE	0x20000000
 #define	 RP_LINK_CONTROL_STATUS_LINKSTAT_MASK	0x3fff0000
 
-#define	TEGRA_PCIE_LINKUP_TIMEOUT	200
+/* Wait 50 ms (per port) for link. */
+#define	TEGRA_PCIE_LINKUP_TIMEOUT	50000
 
 #define TEGRA_PCIB_MSI_ENABLE
 
@@ -1160,6 +1161,7 @@ tegra_pcib_wait_for_link(struct tegra_pcib_softc *sc,
 		    RP_VEND_XP, 4);
 		if (reg & RP_VEND_XP_DL_UP)
 				break;
+		DELAY(1);
 
 	}
 	if (i <= 0)
@@ -1171,6 +1173,7 @@ tegra_pcib_wait_for_link(struct tegra_pcib_softc *sc,
 		if (reg & RP_LINK_CONTROL_STATUS_DL_LINK_ACTIVE)
 				break;
 
+		DELAY(1);
 	}
 	if (i <= 0)
 		return (ETIMEDOUT);