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-rw-r--r--drivers/pci/pci-aardvark.c27
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
index 5b3f23c184..8996be5309 100644
--- a/drivers/pci/pci-aardvark.c
+++ b/drivers/pci/pci-aardvark.c
@@ -148,6 +148,9 @@ struct pcie_advk {
void *base;
int first_busno;
struct udevice *dev;
+#if CONFIG_IS_ENABLED(DM_GPIO)
+ struct gpio_desc reset_gpio;
+#endif
};
static inline void advk_writel(struct pcie_advk *pcie, uint val, uint reg)
@@ -614,9 +617,7 @@ static int pcie_advk_probe(struct udevice *dev)
struct pcie_advk *pcie = dev_get_priv(dev);
#if CONFIG_IS_ENABLED(DM_GPIO)
- struct gpio_desc reset_gpio;
-
- gpio_request_by_name(dev, "reset-gpios", 0, &reset_gpio,
+ gpio_request_by_name(dev, "reset-gpios", 0, &pcie->reset_gpio,
GPIOD_IS_OUT);
/*
* Issue reset to add-in card through the dedicated GPIO.
@@ -631,11 +632,11 @@ static int pcie_advk_probe(struct udevice *dev)
* possible before PCIe PHY initialization. Moreover, the PCIe
* clock should be gated as well.
*/
- if (dm_gpio_is_valid(&reset_gpio)) {
+ if (dm_gpio_is_valid(&pcie->reset_gpio)) {
dev_dbg(pcie->dev, "Toggle PCIE Reset GPIO ...\n");
- dm_gpio_set_value(&reset_gpio, 1);
+ dm_gpio_set_value(&pcie->reset_gpio, 1);
mdelay(200);
- dm_gpio_set_value(&reset_gpio, 0);
+ dm_gpio_set_value(&pcie->reset_gpio, 0);
}
#else
dev_dbg(pcie->dev, "PCIE Reset on GPIO support is missing\n");
@@ -647,6 +648,18 @@ static int pcie_advk_probe(struct udevice *dev)
return pcie_advk_setup_hw(pcie);
}
+static int pcie_advk_remove(struct udevice *dev)
+{
+#if CONFIG_IS_ENABLED(DM_GPIO)
+ struct pcie_advk *pcie = dev_get_priv(dev);
+
+ if (dm_gpio_is_valid(&pcie->reset_gpio))
+ dm_gpio_set_value(&pcie->reset_gpio, 1);
+#endif /* DM_GPIO */
+
+ return 0;
+}
+
/**
* pcie_advk_ofdata_to_platdata() - Translate from DT to device state
*
@@ -687,5 +700,7 @@ U_BOOT_DRIVER(pcie_advk) = {
.ops = &pcie_advk_ops,
.ofdata_to_platdata = pcie_advk_ofdata_to_platdata,
.probe = pcie_advk_probe,
+ .remove = pcie_advk_remove,
+ .flags = DM_FLAG_OS_PREPARE,
.priv_auto_alloc_size = sizeof(struct pcie_advk),
};