PCI: j721e: Add reset GPIO to struct j721e_pcie

[ Upstream commit b8600b8791cb2b7c8be894846b1ecddba7291680 ]

Add reset GPIO to struct j721e_pcie, so it can be used at suspend and
resume stages.

Link: https://lore.kernel.org/linux-pci/20240102-j7200-pcie-s2r-v7-4-a2f9156da6c3@bootlin.com
Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Stable-dep-of: 22a9120479a4 ("PCI: j721e: Deassert PERST# after a delay of PCIE_T_PVPERL_MS milliseconds")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 85718246016b733ee4c8e52ab6c6be2c6f13e93f..d676a4ed57803cf49bc37bc12cf14dff0f2a96eb 100644 (file)
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -52,6 +52,7 @@ struct j721e_pcie {
        u32                     mode;
        u32                     num_lanes;
        u32                     max_lanes;
+       struct gpio_desc        *reset_gpio;
        void __iomem            *user_cfg_base;
        void __iomem            *intd_cfg_base;
        u32                     linkdown_irq_regfield;
@@ -510,6 +511,7 @@ static int j721e_pcie_probe(struct platform_device *pdev)
                                dev_err(dev, "Failed to get reset GPIO\n");
                        goto err_get_sync;
                }
+               pcie->reset_gpio = gpiod;
 
                ret = cdns_pcie_init_phy(dev, cdns_pcie);
                if (ret) {