From: Peng Fan <peng.fan@nxp.com>
Date: Tue, 2 Jan 2018 10:27:29 +0000 (+0800)
Subject: pci: imx: request gpio before use
X-Git-Tag: v2018.03-rc1~176^2~40
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=67b71df277196f1649c366e52545f5bfccf56e03;p=oweals%2Fu-boot.git

pci: imx: request gpio before use

Before use GPIO, we need to request gpio first. Free gpio after use.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Stefano Babic <ssbabic@denx.de>
---

diff --git a/drivers/pci/pcie_imx.c b/drivers/pci/pcie_imx.c
index 2900c8d9d1..90a34063b0 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