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PCI: tegra194: Extend Endpoint mode support

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Since only Controller-5 can be used in the Endpoint mode in P2972-0000
platform, support is available only for Controller-5.

Extend that support by enabling the Endpoint mode capable controller during
initialization which otherwise is not required if it is only Controller-5.

Link: https://lore.kernel.org/r/20220721142052.25971-16-vidyas@nvidia.com
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Vidya Sagar 2022-07-21 19:50:51 +05:30 committed by Bjorn Helgaas
parent e05fd6ae77
commit f899983f71
1 changed files with 9 additions and 0 deletions

9
drivers/pci/controller/dwc/pcie-tegra194.c
View File

@ -1650,6 +1650,13 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie)
return;
}
ret = tegra_pcie_bpmp_set_ctrl_state(pcie, true);
if (ret) {
dev_err(pcie->dev, "Failed to enable controller %u: %d\n",
pcie->cid, ret);
goto fail_set_ctrl_state;
}
ret = tegra_pcie_bpmp_set_pll_state(pcie, true);
if (ret) {
dev_err(dev, "Failed to init UPHY for PCIe EP: %d\n", ret);
@ -1798,6 +1805,8 @@ fail_core_apb_rst:
fail_core_clk_enable:
tegra_pcie_bpmp_set_pll_state(pcie, false);
fail_pll_init:
tegra_pcie_bpmp_set_ctrl_state(pcie, false);
fail_set_ctrl_state:
pm_runtime_put_sync(dev);
}