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usb: host: xhci-tegra: Correct phy enable sequence
XUSB phy needs to be enabled before un-powergating the power partitions. However in the current sequence, it happens opposite. Correct the phy enable and powergating partition sequence to avoid any boot hangs. Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Jui Chang Kuo <jckuo@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/1572859470-7823-1-git-send-email-nkristam@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -763,7 +763,6 @@ static int tegra_xusb_runtime_suspend(struct device *dev)
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{
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struct tegra_xusb *tegra = dev_get_drvdata(dev);
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tegra_xusb_phy_disable(tegra);
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regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
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tegra_xusb_clk_disable(tegra);
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@ -787,16 +786,8 @@ static int tegra_xusb_runtime_resume(struct device *dev)
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goto disable_clk;
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}
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err = tegra_xusb_phy_enable(tegra);
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if (err < 0) {
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dev_err(dev, "failed to enable PHYs: %d\n", err);
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goto disable_regulator;
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}
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return 0;
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disable_regulator:
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regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
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disable_clk:
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tegra_xusb_clk_disable(tegra);
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return err;
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@ -1188,6 +1179,12 @@ static int tegra_xusb_probe(struct platform_device *pdev)
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*/
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platform_set_drvdata(pdev, tegra);
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err = tegra_xusb_phy_enable(tegra);
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if (err < 0) {
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dev_err(&pdev->dev, "failed to enable PHYs: %d\n", err);
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goto put_hcd;
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}
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pm_runtime_enable(&pdev->dev);
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if (pm_runtime_enabled(&pdev->dev))
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err = pm_runtime_get_sync(&pdev->dev);
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@ -1196,7 +1193,7 @@ static int tegra_xusb_probe(struct platform_device *pdev)
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if (err < 0) {
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dev_err(&pdev->dev, "failed to enable device: %d\n", err);
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goto disable_rpm;
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goto disable_phy;
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}
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tegra_xusb_config(tegra, regs);
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@ -1282,9 +1279,11 @@ remove_usb2:
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put_rpm:
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if (!pm_runtime_status_suspended(&pdev->dev))
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tegra_xusb_runtime_suspend(&pdev->dev);
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disable_rpm:
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pm_runtime_disable(&pdev->dev);
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put_hcd:
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usb_put_hcd(tegra->hcd);
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disable_phy:
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tegra_xusb_phy_disable(tegra);
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pm_runtime_disable(&pdev->dev);
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put_powerdomains:
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if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) {
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tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC);
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@ -1321,6 +1320,8 @@ static int tegra_xusb_remove(struct platform_device *pdev)
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tegra_xusb_powerdomain_remove(&pdev->dev, tegra);
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}
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tegra_xusb_phy_disable(tegra);
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tegra_xusb_padctl_put(tegra->padctl);
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return 0;
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