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usb: tegra: Use regulators instead of GPIOs for USB PHY VBUS

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The tegra ehci driver has enabled USB vbus regulators directly using
GPIOs and the device tree attribute nvidia,vbus-gpio. This is ugly
and causes error messages on boot when both the regulator driver
and the ehci driver want access to the same GPIO.

After this patch, usb vbus regulators for tegra usb phy devices are specified
with the device tree attribute vbus-supply = <&x> where x is a regulator defined
in the device tree. The old nvidia,vbus-gpio property is no longer supported.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mikko Perttunen
2013-07-17 10:37:49 +03:00
committed by Felipe Balbi
parent 81d5dfe6d8
commit f5b8c8b6d3
3 changed files with 26 additions and 33 deletions
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1
include/linux/usb/tegra_usb_phy.h
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@@ -55,6 +55,7 @@ struct tegra_usb_phy {
struct clk *clk;
struct clk *pll_u;
struct clk *pad_clk;
struct regulator *vbus;
enum tegra_usb_phy_mode mode;
void *config;
struct usb_phy *ulpi;