diff options
| author | Richard Zhu <r65037@freescale.com> | 2013-11-27 15:24:37 +0800 |
|---|---|---|
| committer | Nitin Garg <nitin.garg@freescale.com> | 2014-04-16 08:47:24 -0500 |
| commit | a2721e237b226305af2a725d9e8bbbcd258c9648 (patch) | |
| tree | 53d71426d22a72ea3bee9e8f504758038805d1c2 /drivers/pci | |
| parent | 975ed3903062580481f212b4d7ddb60315f77d27 (diff) | |
ENGR00289889 pcie: make all pcie gpio be optional
make all pcie gpio be optional, since
ard board doesn't have pcie reset gpio pin
Signed-off-by: Richard Zhu <r65037@freescale.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/host/pci-imx6.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci-imx6.c index a1cbfba2e5e0..0b963c88f819 100644 --- a/drivers/pci/host/pci-imx6.c +++ b/drivers/pci/host/pci-imx6.c @@ -258,9 +258,11 @@ static int imx6_pcie_deassert_core_reset(struct pcie_port *pp) /* allow the clocks to stabilize */ usleep_range(200, 500); - gpio_set_value(imx6_pcie->reset_gpio, 0); - msleep(100); - gpio_set_value(imx6_pcie->reset_gpio, 1); + if (gpio_is_valid(imx6_pcie->reset_gpio)) { + gpio_set_value(imx6_pcie->reset_gpio, 0); + msleep(100); + gpio_set_value(imx6_pcie->reset_gpio, 1); + } return 0; @@ -581,17 +583,15 @@ static int __init imx6_pcie_probe(struct platform_device *pdev) /* Fetch GPIOs */ imx6_pcie->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0); - if (!gpio_is_valid(imx6_pcie->reset_gpio)) { - dev_err(&pdev->dev, "no reset-gpio defined\n"); - ret = -ENODEV; - } - ret = devm_gpio_request_one(&pdev->dev, - imx6_pcie->reset_gpio, - GPIOF_OUT_INIT_LOW, - "PCIe reset"); - if (ret) { - dev_err(&pdev->dev, "unable to get reset gpio\n"); - goto err; + if (gpio_is_valid(imx6_pcie->reset_gpio)) { + ret = devm_gpio_request_one(&pdev->dev, + imx6_pcie->reset_gpio, + GPIOF_OUT_INIT_LOW, + "PCIe reset"); + if (ret) { + dev_err(&pdev->dev, "unable to get reset gpio\n"); + goto err; + } } imx6_pcie->power_on_gpio = of_get_named_gpio(np, "power-on-gpio", 0); |