Some PHY bugs are fixed by IC logic, but these bits are not
enabled by default, so we enable them at driver.
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
---
drivers/usb/phy/phy-mxs-usb.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index 8738890..0908d74 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -31,6 +31,10 @@
#define HW_USBPHY_CTRL_SET 0x34
#define HW_USBPHY_CTRL_CLR 0x38
+#define HW_USBPHY_IP 0x90
+#define HW_USBPHY_IP_SET 0x94
+#define HW_USBPHY_IP_CLR 0x98
+
#define BM_USBPHY_CTRL_SFTRST BIT(31)
#define BM_USBPHY_CTRL_CLKGATE BIT(30)
#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26)
@@ -42,6 +46,8 @@
#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14)
#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1)
+#define BM_USBPHY_IP_FIX (BIT(17) | BIT(18))
+
#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
/* Do disconnection between PHY and controller without vbus */
@@ -97,6 +103,16 @@ struct mxs_phy {
struct regmap *regmap_anatop;
};
+static inline bool is_imx6q_phy(struct mxs_phy *mxs_phy)
+{
+ return mxs_phy->data == &imx6q_phy_data;
+}
+
+static inline bool is_imx6sl_phy(struct mxs_phy *mxs_phy)
+{
+ return mxs_phy->data == &imx6sl_phy_data;
+}
+
static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
{
int ret;
@@ -123,6 +139,10 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy)
BM_USBPHY_CTRL_ENUTMILEVEL3,
base + HW_USBPHY_CTRL_SET);
+ /* Enable IC solution */
+ if (is_imx6q_phy(mxs_phy) || is_imx6sl_phy(mxs_phy))
+ writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET);
+
return 0;
}
--
1.7.8
--
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