Support UTMI+ combo phy for this SoC which is somewhat simmilar to
what the existing Exynos850 support does. The difference is that
some register offsets and bit fields are defferent from Exynos850.

Add required change in phy driver to support combo HS phy for this SoC.

Signed-off-by: Pritam Manohar Sutar <redacted>
---
 drivers/phy/samsung/phy-exynos5-usbdrd.c | 210 +++++++++++++++++++++++
 1 file changed, 210 insertions(+)

diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c
index 5400dd23e500..c22f4de7d094 100644
--- a/drivers/phy/samsung/phy-exynos5-usbdrd.c
+++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c

@@ -41,6 +41,13 @@
 #define EXYNOS2200_CLKRST_LINK_PCLK_SEL		BIT(1)
 
 #define EXYNOS2200_DRD_UTMI			0x10
+
+/* ExynosAutov920 bits */
+#define UTMICTL_FORCE_UTMI_SUSPEND		BIT(13)
+#define UTMICTL_FORCE_UTMI_SLEEP		BIT(12)
+#define UTMICTL_FORCE_DPPULLDOWN		BIT(9)
+#define UTMICTL_FORCE_DMPULLDOWN		BIT(8)
+
 #define EXYNOS2200_UTMI_FORCE_VBUSVALID		BIT(1)
 #define EXYNOS2200_UTMI_FORCE_BVALID		BIT(0)
 

@@ -250,6 +257,22 @@
 #define EXYNOS850_DRD_HSP_TEST			0x5c
 #define HSP_TEST_SIDDQ				BIT(24)
 
+#define EXYNOSAUTOV920_DRD_HSP_CLKRST		0x100
+#define HSPCLKRST_PHY20_SW_PORTRESET		BIT(3)
+#define HSPCLKRST_PHY20_SW_POR			BIT(1)
+#define HSPCLKRST_PHY20_SW_POR_SEL		BIT(0)
+
+#define EXYNOSAUTOV920_DRD_HSPCTL		0x104
+#define HSPCTRL_VBUSVLDEXTSEL			BIT(13)
+#define HSPCTRL_VBUSVLDEXT			BIT(12)
+#define HSPCTRL_EN_UTMISUSPEND			BIT(9)
+#define HSPCTRL_COMMONONN			BIT(8)
+
+#define EXYNOSAUTOV920_DRD_HSP_TEST		0x10c
+
+#define EXYNOSAUTOV920_DRD_HSPPLLTUNE		0x110
+#define HSPPLLTUNE_FSEL				GENMASK(18, 16)
+
 /* Exynos9 - GS101 */
 #define EXYNOS850_DRD_SECPMACTL			0x48
 #define SECPMACTL_PMA_ROPLL_REF_CLK_SEL		GENMASK(13, 12)

@@ -2054,6 +2077,139 @@ static const struct exynos5_usbdrd_phy_drvdata exynos990_usbdrd_phy = {
 	.n_regulators		= ARRAY_SIZE(exynos5_regulator_names),
 };
 
+static void
+exynosautov920_usbdrd_utmi_init(struct exynos5_usbdrd_phy *phy_drd)
+{
+	void __iomem *reg_phy = phy_drd->reg_phy;
+	u32 reg;
+
+	/*
+	 * Disable HWACG (hardware auto clock gating control). This
+	 * forces QACTIVE signal in Q-Channel interface to HIGH level,
+	 * to make sure the PHY clock is not gated by the hardware.
+	 */
+	reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL);
+	reg |= LINKCTRL_FORCE_QACT;
+	writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL);