From 67b71df277196f1649c366e52545f5bfccf56e03 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Tue, 2 Jan 2018 18:27:29 +0800 Subject: [PATCH] pci: imx: request gpio before use Before use GPIO, we need to request gpio first. Free gpio after use. Signed-off-by: Peng Fan Cc: Stefano Babic Cc: Fabio Estevam Reviewed-by: Stefano Babic --- drivers/pci/pcie_imx.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/pcie_imx.c b/drivers/pci/pcie_imx.c index 2900c8d..90a3406 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