diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
index 658890f73515..152a4e751bdc 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
@@ -78,10 +78,10 @@
 #define XELPDP_PCLK_PLL_ENABLE_TIMEOUT_US		3200
 #define XELPDP_PCLK_PLL_DISABLE_TIMEOUT_US		20
 #define XELPDP_PORT_BUF_SOC_READY_TIMEOUT_US		100
-#define XELPDP_PORT_RESET_START_TIMEOUT_US		5
+#define XELPDP_PORT_RESET_START_TIMEOUT_US		10
 #define XELPDP_PORT_POWERDOWN_UPDATE_TIMEOUT_MS		2
 #define XELPDP_PORT_RESET_END_TIMEOUT_MS		15
-#define XELPDP_REFCLK_ENABLE_TIMEOUT_US			1
+#define XELPDP_REFCLK_ENABLE_TIMEOUT_US			10
 
 #define _XELPDP_PORT_BUF_CTL1_LN0_A			0x64004
 #define _XELPDP_PORT_BUF_CTL1_LN0_B			0x64104