phy: pipe3: insert delay to enumerate in GEN2 mode

8-bit delay value (0xF1) is required for GEN2 devices to be enumerated
consistently. Added an API to be called from PHY drivers to set this delay
value and called it from PIPE3 driver to set the delay value.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/phy/omap_control_phy.h b/include/linux/phy/omap_control_phy.h
index 5450403c7546..e9e6cfbfbb58 100644
--- a/include/linux/phy/omap_control_phy.h
+++ b/include/linux/phy/omap_control_phy.h
@@ -23,6 +23,7 @@ enum omap_control_phy_type {
         OMAP_CTRL_TYPE_OTGHS = 1,       /* Mailbox OTGHS_CONTROL */
         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_PCIE,    /* RX TX control of ACSPCIE */
         OMAP_CTRL_TYPE_DRA7USB2, /* USB2 PHY, power and power_aux e.g. DRA7 */
         OMAP_CTRL_TYPE_AM437USB2, /* USB2 PHY, power e.g. AM437x */
 };
@@ -33,6 +34,7 @@ struct omap_control_phy {
         u32 __iomem *otghs_control;
         u32 __iomem *power;
         u32 __iomem *power_aux;
+        u32 __iomem *pcie_pcs;
 
         struct clk *sys_clk;
 
@@ -63,6 +65,9 @@ enum omap_control_usb_mode {
 #define OMAP_CTRL_PIPE3_PHY_TX_RX_POWERON       0x3
 #define OMAP_CTRL_PIPE3_PHY_TX_RX_POWEROFF      0x0
 
+#define OMAP_CTRL_PCIE_PCS_MASK                 0xff
+#define OMAP_CTRL_PCIE_PCS_DELAY_COUNT_SHIFT    0x8
+
 #define OMAP_CTRL_USB2_PHY_PD           BIT(28)
 
 #define AM437X_CTRL_USB2_PHY_PD         BIT(0)
@@ -74,6 +79,7 @@ enum omap_control_usb_mode {
 void omap_control_phy_power(struct device *dev, int on);
 void omap_control_usb_set_mode(struct device *dev,
                                enum omap_control_usb_mode mode);
+void omap_control_pcie_pcs(struct device *dev, u8 id, u8 delay);
 #else
 
 static inline void omap_control_phy_power(struct device *dev, int on)
@@ -84,6 +90,10 @@ static inline void omap_control_usb_set_mode(struct device *dev,
         enum omap_control_usb_mode mode)
 {
 }
+
+static inline void omap_control_pcie_pcs(struct device *dev, u8 id, u8 delay)
+{
+}
 #endif
 
 #endif  /* __OMAP_CONTROL_PHY_H__ */