diff options
| -rw-r--r-- | drivers/pci/pci-rcar-gen4.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pci/pci-rcar-gen4.c b/drivers/pci/pci-rcar-gen4.c index 1f41ce28b0b..e165271f58c 100644 --- a/drivers/pci/pci-rcar-gen4.c +++ b/drivers/pci/pci-rcar-gen4.c @@ -477,6 +477,10 @@ static int rcar_gen4_pcie_probe(struct udevice *dev) if (!rcar_gen4_pcie_link_up(rcar)) { printf("PCIE-%d: Link down\n", dev_seq(dev)); + rcar_gen4_pcie_ltssm_control(rcar, false); + dm_gpio_set_value(&rcar->pe_rst, 1); + reset_assert(&rcar->pwr_rst); + clk_disable_unprepare(rcar->ref_clk); return -ENODEV; } @@ -494,6 +498,26 @@ static int rcar_gen4_pcie_probe(struct udevice *dev) } /** + * rcar_gen4_pcie_remove() - Stop the PCIe bus active link + * @dev: A pointer to the device being operated on + * + * Stop an active link on the PCIe bus and deconfigure the controller. + * + * Return: 0 on success, else -ENODEV + */ +static int rcar_gen4_pcie_remove(struct udevice *dev) +{ + struct rcar_gen4_pcie *rcar = dev_get_priv(dev); + + rcar_gen4_pcie_ltssm_control(rcar, false); + dm_gpio_set_value(&rcar->pe_rst, 1); + reset_assert(&rcar->pwr_rst); + clk_disable_unprepare(rcar->ref_clk); + + return 0; +} + +/** * rcar_gen4_pcie_of_to_plat() - Translate from DT to device state * * @dev: A pointer to the device being operated on @@ -566,5 +590,7 @@ U_BOOT_DRIVER(rcar_gen4_pcie) = { .ops = &rcar_gen4_pcie_ops, .of_to_plat = rcar_gen4_pcie_of_to_plat, .probe = rcar_gen4_pcie_probe, + .remove = rcar_gen4_pcie_remove, .priv_auto = sizeof(struct rcar_gen4_pcie), + .flags = DM_FLAG_ACTIVE_DMA, }; |