Split the PCIe PHY reset from the link up function to make
the code a little more structured.
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Frank Li <lznuaa@xxxxxxxxx>
Cc: Harro Haan <hrhaan@xxxxxxxxx>
Cc: Jingoo Han <jg1.han@xxxxxxxxxxx>
Cc: Mohit KUMAR <Mohit.KUMAR@xxxxxx>
Cc: Pratyush Anand <pratyush.anand@xxxxxx>
Cc: Richard Zhu <r65037@xxxxxxxxxxxxx>
Cc: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
Cc: Sean Cross <xobs@xxxxxxxxxx>
Cc: Shawn Guo <shawn.guo@xxxxxxxxxx>
Cc: Siva Reddy Kallam <siva.kallam@xxxxxxxxxxx>
Cc: Srikanth T Shivanand <ts.srikanth@xxxxxxxxxxx>
Cc: Tim Harvey <tharvey@xxxxxxxxxxxxx>
Cc: Troy Kisky <troy.kisky@xxxxxxxxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
---
drivers/pci/host/pci-imx6.c | 35 +++++++++++++++++++----------------
1 file changed, 19 insertions(+), 16 deletions(-)
V2: Drop unused 'temp' variable.
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c
index f5541c3..4983784 100644
--- a/drivers/pci/host/pci-imx6.c
+++ b/drivers/pci/host/pci-imx6.c
@@ -336,9 +336,26 @@ static void imx6_pcie_host_init(struct pcie_port *pp)
return;
}
+static void imx6_pcie_reset_phy(struct pcie_port *pp)
+{
+ uint32_t temp;
+
+ pcie_phy_read(pp->dbi_base, PHY_RX_OVRD_IN_LO, &temp);
+ temp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN |
+ PHY_RX_OVRD_IN_LO_RX_PLL_EN);
+ pcie_phy_write(pp->dbi_base, PHY_RX_OVRD_IN_LO, temp);
+
+ usleep_range(2000, 3000);
+
+ pcie_phy_read(pp->dbi_base, PHY_RX_OVRD_IN_LO, &temp);
+ temp &= ~(PHY_RX_OVRD_IN_LO_RX_DATA_EN |
+ PHY_RX_OVRD_IN_LO_RX_PLL_EN);
+ pcie_phy_write(pp->dbi_base, PHY_RX_OVRD_IN_LO, temp);
+}
+
static int imx6_pcie_link_up(struct pcie_port *pp)
{
- u32 rc, ltssm, rx_valid, temp;
+ u32 rc, ltssm, rx_valid;
/*
* Test if the PHY reports that the link is up and also that
@@ -370,21 +387,7 @@ static int imx6_pcie_link_up(struct pcie_port *pp)
dev_err(pp->dev, "transition to gen2 is stuck, reset PHY!\n");
- pcie_phy_read(pp->dbi_base,
- PHY_RX_OVRD_IN_LO, &temp);
- temp |= (PHY_RX_OVRD_IN_LO_RX_DATA_EN
- | PHY_RX_OVRD_IN_LO_RX_PLL_EN);
- pcie_phy_write(pp->dbi_base,
- PHY_RX_OVRD_IN_LO, temp);
-
- usleep_range(2000, 3000);
-
- pcie_phy_read(pp->dbi_base,
- PHY_RX_OVRD_IN_LO, &temp);
- temp &= ~(PHY_RX_OVRD_IN_LO_RX_DATA_EN
- | PHY_RX_OVRD_IN_LO_RX_PLL_EN);
- pcie_phy_write(pp->dbi_base,
- PHY_RX_OVRD_IN_LO, temp);
+ imx6_pcie_reset_phy(pp);
return 0;
}
--
1.8.4.3
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
