diff options
Diffstat (limited to 'drivers/pci/pci-aardvark.c')
| -rw-r--r-- | drivers/pci/pci-aardvark.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c index 711b930d0f9..b2c417701f2 100644 --- a/drivers/pci/pci-aardvark.c +++ b/drivers/pci/pci-aardvark.c @@ -148,6 +148,7 @@ struct pcie_advk { void *base; int first_busno; struct udevice *dev; + struct gpio_desc reset_gpio; }; static inline void advk_writel(struct pcie_advk *pcie, uint val, uint reg) @@ -613,10 +614,7 @@ 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-gpio", 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. @@ -631,15 +629,14 @@ 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, 0); + dm_gpio_set_value(&pcie->reset_gpio, 1); mdelay(200); - dm_gpio_set_value(&reset_gpio, 1); + dm_gpio_set_value(&pcie->reset_gpio, 0); + } else { + dev_warn(pcie->dev, "PCIE Reset on GPIO support is missing\n"); } -#else - dev_dbg(pcie->dev, "PCIE Reset on GPIO support is missing\n"); -#endif /* DM_GPIO */ pcie->first_busno = dev->seq; pcie->dev = pci_get_controller(dev); @@ -647,6 +644,16 @@ static int pcie_advk_probe(struct udevice *dev) return pcie_advk_setup_hw(pcie); } +static int pcie_advk_remove(struct udevice *dev) +{ + struct pcie_advk *pcie = dev_get_priv(dev); + + if (dm_gpio_is_valid(&pcie->reset_gpio)) + dm_gpio_set_value(&pcie->reset_gpio, 1); + + return 0; +} + /** * pcie_advk_ofdata_to_platdata() - Translate from DT to device state * @@ -687,5 +694,7 @@ 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), }; |