PCI: keystone: Link training retries initiation
diff mbox series

Message ID 20191007114159.61ad83ea@monakov-y.office.kontur-niirs.ru
State New
Delegated to: Lorenzo Pieralisi
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Series
  • PCI: keystone: Link training retries initiation
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Commit Message

Yurii Monakov Oct. 7, 2019, 8:41 a.m. UTC
ks_pcie_stop_link function never cleared LTSSM_EN_VAL bit so
link training was never triggered more than once after startup.
In configurations where link can be unstable during early boot,
for example, under low temperature, it will never be established.

Signed-off-by: Yurii Monakov <monakov.y@gmail.com>
---
 drivers/pci/controller/dwc/pci-keystone.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
diff mbox series

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index f19de60ac991..ea8e7ebd8c4f 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -510,7 +510,7 @@  static void ks_pcie_stop_link(struct dw_pcie *pci)
 	/* Disable Link training */
 	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
 	val &= ~LTSSM_EN_VAL;
-	ks_pcie_app_writel(ks_pcie, CMD_STATUS, LTSSM_EN_VAL | val);
+	ks_pcie_app_writel(ks_pcie, CMD_STATUS, val);
 }
 
 static int ks_pcie_start_link(struct dw_pcie *pci)