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usb: phy: tegra: Use generic stub for a missing VBUS regulator 

Regulator core provides dummy regulator if device-tree doesn't define VBUS
regulator.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200106013416.9604-10-digetx@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Osipenko 2020-01-06 04:34:05 +03:00 committed by Greg Kroah-Hartman
parent b07e5f863f
commit 9df3adca0b
1 changed files with 9 additions and 19 deletions
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12
drivers/usb/phy/phy-tegra-usb.c
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@ -836,9 +836,7 @@ static void tegra_usb_phy_shutdown(struct usb_phy *u_phy)
if (!phy->is_ulpi_phy)
utmip_pad_close(phy);
if (!IS_ERR(phy->vbus))
regulator_disable(phy->vbus);
clk_disable_unprepare(phy->pll_u);
phy->freq = NULL;
@ -900,15 +898,12 @@ static int tegra_usb_phy_init(struct usb_phy *u_phy)
goto fail;
}
if (!IS_ERR(phy->vbus)) {
err = regulator_enable(phy->vbus);
if (err) {
dev_err(phy->u_phy.dev,
"Failed to enable USB VBUS regulator: %d\n",
err);
"Failed to enable USB VBUS regulator: %d\n", err);
goto fail;
}
}
if (phy->is_ulpi_phy)
err = ulpi_open(phy);
@ -1140,14 +1135,9 @@ static int tegra_usb_phy_probe(struct platform_device *pdev)
}
/* On some boards, the VBUS regulator doesn't need to be controlled */
if (of_find_property(np, "vbus-supply", NULL)) {
tegra_phy->vbus = devm_regulator_get(&pdev->dev, "vbus");
if (IS_ERR(tegra_phy->vbus))
return PTR_ERR(tegra_phy->vbus);
} else {
dev_notice(&pdev->dev, "no vbus regulator");
tegra_phy->vbus = ERR_PTR(-ENODEV);
}
tegra_phy->pll_u = devm_clk_get(&pdev->dev, "pll_u");
err = PTR_ERR_OR_ZERO(tegra_phy->pll_u);