phy: starfive: Add Starfive JH7110 USB 2.0 PHY driver

Add Starfive JH7110 USB 2.0 PHY driver, which is generic
PHY driver.

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Tested-by: E Shattow <lucent@gmail.com>
diff --git a/drivers/phy/starfive/phy-jh7110-usb-syscon.h b/drivers/phy/starfive/phy-jh7110-usb-syscon.h
new file mode 100644
index 0000000..0eb66f0
--- /dev/null
+++ b/drivers/phy/starfive/phy-jh7110-usb-syscon.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef PHY_JH7110_USB_SYSCON_H_
+#define PHY_JH7110_USB_SYSCON_H_
+
+#define SYSCON_USB_PDRSTN_REG_OFFSET	0x18
+#define USB_PDRSTN_SPLIT_BIT		 17
+
+#endif