diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 56ba8f1..191b897 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2930,7 +2930,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define MBUS_BBOX_CTL_S2		_MMIO(0x45044)
 
 #define HDPORT_STATE			_MMIO(0x45050)
-#define   HDPORT_DPLL_USED_MASK		REG_GENMASK(14, 12)
+#define   HDPORT_DPLL_USED_MASK		REG_GENMASK(15, 12)
 #define   HDPORT_DDI_USED(phy)		REG_BIT(2 * (phy) + 1)
 #define   HDPORT_ENABLED		REG_BIT(0)
 
@@ -10345,11 +10345,14 @@ enum skl_power_gate {
 /* CNL PLL */
 #define DPLL0_ENABLE		0x46010
 #define DPLL1_ENABLE		0x46014
+#define _ADLS_DPLL2_ENABLE	0x46018
+#define _ADLS_DPLL3_ENABLE	0x46030
 #define  PLL_ENABLE		(1 << 31)
 #define  PLL_LOCK		(1 << 30)
 #define  PLL_POWER_ENABLE	(1 << 27)
 #define  PLL_POWER_STATE	(1 << 26)
-#define CNL_DPLL_ENABLE(pll)	_MMIO_PLL(pll, DPLL0_ENABLE, DPLL1_ENABLE)
+#define CNL_DPLL_ENABLE(pll)	_MMIO_PLL3(pll, DPLL0_ENABLE, DPLL1_ENABLE, \
+					   _ADLS_DPLL2_ENABLE, _ADLS_DPLL3_ENABLE)
 
 #define TBT_PLL_ENABLE		_MMIO(0x46020)
 
@@ -10595,6 +10598,21 @@ enum skl_power_gate {
 						   _DG1_DPLL2_CFGCR1, \
 						   _DG1_DPLL3_CFGCR1)
 
+/* For ADL-S DPLL4_CFGCR0/1 are used to control DPLL2 */
+#define _ADLS_DPLL3_CFGCR0		0x1642C0
+#define _ADLS_DPLL4_CFGCR0		0x164294
+#define ADLS_DPLL_CFGCR0(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR0, \
+						   _TGL_DPLL1_CFGCR0, \
+						   _ADLS_DPLL4_CFGCR0, \
+						   _ADLS_DPLL3_CFGCR0)
+
+#define _ADLS_DPLL3_CFGCR1		0x1642C4
+#define _ADLS_DPLL4_CFGCR1		0x164298
+#define ADLS_DPLL_CFGCR1(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR1, \
+						   _TGL_DPLL1_CFGCR1, \
+						   _ADLS_DPLL4_CFGCR1, \
+						   _ADLS_DPLL3_CFGCR1)
+
 #define _DKL_PHY1_BASE			0x168000
 #define _DKL_PHY2_BASE			0x169000
 #define _DKL_PHY3_BASE			0x16A000