The PCIe needs lvds_gate for successful operation, so make the PCIe
driver enable (set as output) the lvds_gate .
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Cc: Frank Li <lznuaa@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 | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c
index 728989a..94e4d0f 100644
--- a/drivers/pci/host/pci-imx6.c
+++ b/drivers/pci/host/pci-imx6.c
@@ -35,6 +35,7 @@ struct imx6_pcie {
int power_on_gpio;
int wake_up_gpio;
int disable_gpio;
+ struct clk *lvds_sel;
struct clk *lvds_gate;
struct clk *sata_ref_100m;
struct clk *pcie_ref_125m;
@@ -255,6 +256,12 @@ static int imx6_pcie_deassert_core_reset(struct pcie_port *pp)
goto err_pcie_ref;
}
+ ret = clk_prepare_enable(imx6_pcie->lvds_sel);
+ if (ret) {
+ dev_err(pp->dev, "unable to enable lvds_sel\n");
+ goto err_lvds_sel;
+ }
+
ret = clk_prepare_enable(imx6_pcie->lvds_gate);
if (ret) {
dev_err(pp->dev, "unable to enable lvds_gate\n");
@@ -273,8 +280,10 @@ static int imx6_pcie_deassert_core_reset(struct pcie_port *pp)
return 0;
err_pcie_axi:
- clk_disable_unprepare(imx6_pcie->lvds_gate);
+ clk_disable_unprepare(imx6_pcie->lvds_sel);
err_lvds_gate:
+ clk_disable_unprepare(imx6_pcie->lvds_gate);
+err_lvds_sel:
clk_disable_unprepare(imx6_pcie->pcie_ref_125m);
err_pcie_ref:
clk_disable_unprepare(imx6_pcie->sata_ref_100m);
@@ -497,6 +506,14 @@ static int __init imx6_pcie_probe(struct platform_device *pdev)
}
/* Fetch clocks */
+ imx6_pcie->lvds_sel = devm_clk_get(&pdev->dev, "lvds_sel");
+ if (IS_ERR(imx6_pcie->lvds_sel)) {
+ dev_err(&pdev->dev,
+ "lvds_sel clock select missing or invalid\n");
+ ret = PTR_ERR(imx6_pcie->lvds_sel);
+ goto err;
+ }
+
imx6_pcie->lvds_gate = devm_clk_get(&pdev->dev, "lvds_gate");
if (IS_ERR(imx6_pcie->lvds_gate)) {
dev_err(&pdev->dev,
--
1.8.4.rc3
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