diff mbox series

[v3,10/11] PCI: aardvark: Disable link training when unbinding driver

Message ID 20211130132523.28126-11-kabel@kernel.org (mailing list archive)
State Superseded
Headers show
Series PCI: aardvark controller fixes BATCH 3 | expand

Commit Message

Marek Behún Nov. 30, 2021, 1:25 p.m. UTC 
From: Pali Rohár <pali@kernel.org>

Disable link training circuit in driver unbind sequence.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
---
 drivers/pci/controller/pci-aardvark.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index 271ebecee965..e5c88f1c177b 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -1741,6 +1741,11 @@  static int advk_pcie_remove(struct platform_device *pdev)
 	if (pcie->reset_gpio)
 		gpiod_set_value_cansleep(pcie->reset_gpio, 1);
 
+	/* Disable link training */
+	val = advk_readl(pcie, PCIE_CORE_CTRL0_REG);
+	val &= ~LINK_TRAINING_EN;
+	advk_writel(pcie, val, PCIE_CORE_CTRL0_REG);
+
 	/* Disable outbound address windows mapping */
 	for (i = 0; i < OB_WIN_COUNT; i++)
 		advk_pcie_disable_ob_win(pcie, i);