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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>
(cherry picked from commit 67b71df277
)
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7411496d73
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4de61de121
@ -517,10 +517,12 @@ static int imx6_pcie_init_phy(void)
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__weak int imx6_pcie_toggle_power(void)
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__weak int imx6_pcie_toggle_power(void)
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{
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{
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#ifdef CONFIG_PCIE_IMX_POWER_GPIO
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#ifdef CONFIG_PCIE_IMX_POWER_GPIO
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gpio_request(CONFIG_PCIE_IMX_POWER_GPIO, "pcie_power");
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gpio_direction_output(CONFIG_PCIE_IMX_POWER_GPIO, 0);
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gpio_direction_output(CONFIG_PCIE_IMX_POWER_GPIO, 0);
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mdelay(20);
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mdelay(20);
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gpio_set_value(CONFIG_PCIE_IMX_POWER_GPIO, 1);
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gpio_set_value(CONFIG_PCIE_IMX_POWER_GPIO, 1);
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mdelay(20);
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mdelay(20);
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gpio_free(CONFIG_PCIE_IMX_POWER_GPIO);
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#endif
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#endif
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return 0;
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return 0;
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}
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}
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@ -556,10 +558,12 @@ __weak int imx6_pcie_toggle_reset(void)
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* state due to being previously used in U-Boot.
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* state due to being previously used in U-Boot.
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*/
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*/
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#ifdef CONFIG_PCIE_IMX_PERST_GPIO
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#ifdef CONFIG_PCIE_IMX_PERST_GPIO
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gpio_request(CONFIG_PCIE_IMX_PERST_GPIO, "pcie_reset");
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gpio_direction_output(CONFIG_PCIE_IMX_PERST_GPIO, 0);
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gpio_direction_output(CONFIG_PCIE_IMX_PERST_GPIO, 0);
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mdelay(20);
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mdelay(20);
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gpio_set_value(CONFIG_PCIE_IMX_PERST_GPIO, 1);
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gpio_set_value(CONFIG_PCIE_IMX_PERST_GPIO, 1);
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mdelay(20);
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mdelay(20);
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gpio_free(CONFIG_PCIE_IMX_PERST_GPIO);
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#else
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#else
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puts("WARNING: Make sure the PCIe #PERST line is connected!\n");
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puts("WARNING: Make sure the PCIe #PERST line is connected!\n");
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#endif
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#endif
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