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-rw-r--r--drivers/phy/keystone-usb-phy.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/phy/keystone-usb-phy.c b/drivers/phy/keystone-usb-phy.c
index e8146cabfa..14ac6bbbb2 100644
--- a/drivers/phy/keystone-usb-phy.c
+++ b/drivers/phy/keystone-usb-phy.c
@@ -9,6 +9,7 @@
#include <dm/device.h>
#include <generic-phy.h>
#include <asm/io.h>
+#include <asm/arch/psc_defs.h>
/* USB PHY control register offsets */
#define USB_PHY_CTL_UTMI 0x0000
@@ -22,15 +23,25 @@
#define PHY_REF_SSP_EN BIT(29)
struct keystone_usb_phy {
+ u32 psc_domain;
void __iomem *reg;
};
static int keystone_usb_init(struct phy *phy)
{
u32 val;
+ int rc;
struct udevice *dev = phy->dev;
struct keystone_usb_phy *keystone = dev_get_priv(dev);
+ /* Release USB from reset */
+ rc = psc_enable_module(keystone->psc_domain);
+ if (rc) {
+ debug("Cannot enable USB module");
+ return -rc;
+ }
+ mdelay(10);
+
/*
* VBUSVLDEXTSEL has a default value of 1 in BootCfg but shouldn't.
* It should always be cleared because our USB PHY has an onchip VBUS
@@ -72,13 +83,24 @@ static int keystone_usb_power_off(struct phy *phy)
static int keystone_usb_exit(struct phy *phy)
{
+ struct udevice *dev = phy->dev;
+ struct keystone_usb_phy *keystone = dev_get_priv(dev);
+
+ if (psc_disable_module(keystone->psc_domain))
+ debug("failed to disable USB module!\n");
+
return 0;
}
static int keystone_usb_phy_probe(struct udevice *dev)
{
+ int rc;
struct keystone_usb_phy *keystone = dev_get_priv(dev);
+ rc = dev_read_u32(dev, "psc-domain", &keystone->psc_domain);
+ if (rc)
+ return rc;
+
keystone->reg = dev_remap_addr_index(dev, 0);
if (!keystone->reg) {
pr_err("unable to remap usb phy\n");