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usb: phy: omap: Add omap-control Support for AM437x 

This adds omap control module support for USBSS in AM437x SoC.
Update DT binding information to reflect these changes.

Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
George Cherian 2013-10-15 15:32:14 +05:30 committed by Felipe Balbi
parent db67bc04bd
commit c4b34a3b7a
3 changed files with 27 additions and 0 deletions
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2
Documentation/devicetree/bindings/usb/omap-usb.txt
View File

@ -87,6 +87,8 @@ Required properties:
e.g. USB3 PHY and SATA PHY on OMAP5.
"ti,control-phy-dra7usb2" - if it has power down register like USB2 PHY on
DRA7 platform.
"ti,control-phy-am437usb2" - if it has power down register like USB2 PHY on
AM437 platform.
- reg : Address and length of the register set for the device. It contains
the address of "otghs_control" for control-phy-otghs or "power" register
for other types.

19
drivers/usb/phy/phy-omap-control.c
View File

@ -84,6 +84,20 @@ void omap_control_usb_phy_power(struct device *dev, int on)
else
val |= OMAP_CTRL_USB2_PHY_PD;
break;
case OMAP_CTRL_TYPE_AM437USB2:
if (on) {
val &= ~(AM437X_CTRL_USB2_PHY_PD |
AM437X_CTRL_USB2_OTG_PD);
val |= (AM437X_CTRL_USB2_OTGVDET_EN |
AM437X_CTRL_USB2_OTGSESSEND_EN);
} else {
val &= ~(AM437X_CTRL_USB2_OTGVDET_EN |
AM437X_CTRL_USB2_OTGSESSEND_EN);
val |= (AM437X_CTRL_USB2_PHY_PD |
AM437X_CTRL_USB2_OTG_PD);
}
break;
default:
dev_err(dev, "%s: type %d not recognized\n",
__func__, control_usb->type);
@ -197,6 +211,7 @@ static const enum omap_control_usb_type otghs_data = OMAP_CTRL_TYPE_OTGHS;
static const enum omap_control_usb_type usb2_data = OMAP_CTRL_TYPE_USB2;
static const enum omap_control_usb_type pipe3_data = OMAP_CTRL_TYPE_PIPE3;
static const enum omap_control_usb_type dra7usb2_data = OMAP_CTRL_TYPE_DRA7USB2;
static const enum omap_control_usb_type am437usb2_data = OMAP_CTRL_TYPE_AM437USB2;
static const struct of_device_id omap_control_usb_id_table[] = {
{
@ -215,6 +230,10 @@ static const struct of_device_id omap_control_usb_id_table[] = {
.compatible = "ti,control-phy-dra7usb2",
.data = &dra7usb2_data,
},
{
.compatible = "ti,control-phy-am437usb2",
.data = &am437usb2_data,
},
{},
};
MODULE_DEVICE_TABLE(of, omap_control_usb_id_table);

6
include/linux/usb/omap_control_usb.h
View File

@ -24,6 +24,7 @@ enum omap_control_usb_type {
OMAP_CTRL_TYPE_USB2, /* USB2_PHY, power down in CONTROL_DEV_CONF */
OMAP_CTRL_TYPE_PIPE3, /* PIPE3 PHY, DPLL & seperate Rx/Tx power */
OMAP_CTRL_TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */
OMAP_CTRL_TYPE_AM437USB2, /* USB2 PHY, power e.g. AM437x */
};
struct omap_control_usb {
@ -64,6 +65,11 @@ enum omap_control_usb_mode {
#define OMAP_CTRL_USB2_PHY_PD BIT(28)
#define AM437X_CTRL_USB2_PHY_PD BIT(0)
#define AM437X_CTRL_USB2_OTG_PD BIT(1)
#define AM437X_CTRL_USB2_OTGVDET_EN BIT(19)
#define AM437X_CTRL_USB2_OTGSESSEND_EN BIT(20)
#if IS_ENABLED(CONFIG_OMAP_CONTROL_USB)
extern void omap_control_usb_phy_power(struct device *dev, int on);
extern void omap_control_usb_set_mode(struct device *dev,