Commit f899983f authored by Vidya Sagar's avatar Vidya Sagar Committed by Bjorn Helgaas
Browse files

PCI: tegra194: Extend Endpoint mode support 

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: default avatarVidya Sagar <vidyas@nvidia.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent e05fd6ae

drivers/pci/controller/dwc/pcie-tegra194.c

+9 −0
Original line number Diff line number Diff line
@@ -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 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie) 
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);

}