usb: host: xhci-tegra: Correct phy enable sequence
commit 6351653feb
upstream.
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>
5.4-rM2-2.2.x-imx-squashed
parent
dabdb57bd6
commit
a348e30570
|
@ -755,7 +755,6 @@ static int tegra_xusb_runtime_suspend(struct device *dev)
|
|||
{
|
||||
struct tegra_xusb *tegra = dev_get_drvdata(dev);
|
||||
|
||||
tegra_xusb_phy_disable(tegra);
|
||||
regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
|
||||
tegra_xusb_clk_disable(tegra);
|
||||
|
||||
|
@ -779,16 +778,8 @@ static int tegra_xusb_runtime_resume(struct device *dev)
|
|||
goto disable_clk;
|
||||
}
|
||||
|
||||
err = tegra_xusb_phy_enable(tegra);
|
||||
if (err < 0) {
|
||||
dev_err(dev, "failed to enable PHYs: %d\n", err);
|
||||
goto disable_regulator;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
disable_regulator:
|
||||
regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
|
||||
disable_clk:
|
||||
tegra_xusb_clk_disable(tegra);
|
||||
return err;
|
||||
|
@ -1181,6 +1172,12 @@ static int tegra_xusb_probe(struct platform_device *pdev)
|
|||
*/
|
||||
platform_set_drvdata(pdev, tegra);
|
||||
|
||||
err = tegra_xusb_phy_enable(tegra);
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to enable PHYs: %d\n", err);
|
||||
goto put_hcd;
|
||||
}
|
||||
|
||||
pm_runtime_enable(&pdev->dev);
|
||||
if (pm_runtime_enabled(&pdev->dev))
|
||||
err = pm_runtime_get_sync(&pdev->dev);
|
||||
|
@ -1189,7 +1186,7 @@ static int tegra_xusb_probe(struct platform_device *pdev)
|
|||
|
||||
if (err < 0) {
|
||||
dev_err(&pdev->dev, "failed to enable device: %d\n", err);
|
||||
goto disable_rpm;
|
||||
goto disable_phy;
|
||||
}
|
||||
|
||||
tegra_xusb_config(tegra, regs);
|
||||
|
@ -1275,9 +1272,11 @@ remove_usb2:
|
|||
put_rpm:
|
||||
if (!pm_runtime_status_suspended(&pdev->dev))
|
||||
tegra_xusb_runtime_suspend(&pdev->dev);
|
||||
disable_rpm:
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
put_hcd:
|
||||
usb_put_hcd(tegra->hcd);
|
||||
disable_phy:
|
||||
tegra_xusb_phy_disable(tegra);
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
put_powerdomains:
|
||||
if (!of_property_read_bool(pdev->dev.of_node, "power-domains")) {
|
||||
tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC);
|
||||
|
@ -1314,6 +1313,8 @@ static int tegra_xusb_remove(struct platform_device *pdev)
|
|||
tegra_xusb_powerdomain_remove(&pdev->dev, tegra);
|
||||
}
|
||||
|
||||
tegra_xusb_phy_disable(tegra);
|
||||
|
||||
tegra_xusb_padctl_put(tegra->padctl);
|
||||
|
||||
return 0;
|
||||
|
|
Loading…
Reference in New Issue