diff options
| author | Peng Fan <[email protected]> | 2018-01-02 18:27:29 +0800 |
|---|---|---|
| committer | Stefano Babic <[email protected]> | 2018-01-12 14:28:04 +0100 |
| commit | 67b71df277196f1649c366e52545f5bfccf56e03 (patch) | |
| tree | 0d637283a42f6a33c817d7a143d1b7f1b28add45 | |
| parent | d9523fdd11dacdf7e01216c470ef1a7a4fabf0b8 (diff) | |
pci: imx: request gpio before use
Before use GPIO, we need to request gpio first. Free gpio after use.
Signed-off-by: Peng Fan <[email protected]>
Cc: Stefano Babic <[email protected]>
Cc: Fabio Estevam <[email protected]>
Reviewed-by: Stefano Babic <[email protected]>
| -rw-r--r-- | drivers/pci/pcie_imx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/pci/pcie_imx.c b/drivers/pci/pcie_imx.c index 2900c8d9d17..90a34063b01 100644 --- a/drivers/pci/pcie_imx.c +++ b/drivers/pci/pcie_imx.c @@ -517,10 +517,12 @@ static int imx6_pcie_init_phy(void) __weak int imx6_pcie_toggle_power(void) { #ifdef CONFIG_PCIE_IMX_POWER_GPIO + gpio_request(CONFIG_PCIE_IMX_POWER_GPIO, "pcie_power"); gpio_direction_output(CONFIG_PCIE_IMX_POWER_GPIO, 0); mdelay(20); gpio_set_value(CONFIG_PCIE_IMX_POWER_GPIO, 1); mdelay(20); + gpio_free(CONFIG_PCIE_IMX_POWER_GPIO); #endif return 0; } @@ -556,10 +558,12 @@ __weak int imx6_pcie_toggle_reset(void) * state due to being previously used in U-Boot. */ #ifdef CONFIG_PCIE_IMX_PERST_GPIO + gpio_request(CONFIG_PCIE_IMX_PERST_GPIO, "pcie_reset"); gpio_direction_output(CONFIG_PCIE_IMX_PERST_GPIO, 0); mdelay(20); gpio_set_value(CONFIG_PCIE_IMX_PERST_GPIO, 1); mdelay(20); + gpio_free(CONFIG_PCIE_IMX_PERST_GPIO); #else puts("WARNING: Make sure the PCIe #PERST line is connected!\n"); #endif |