diff --git a/drivers/gpu/drm/i915/display/intel_psr_regs.h b/drivers/gpu/drm/i915/display/intel_psr_regs.h
index 0841242543ca..9ad7611506e8 100644
--- a/drivers/gpu/drm/i915/display/intel_psr_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_psr_regs.h
@@ -298,7 +298,7 @@
 #define _PORT_ALPM_CTL_B			0x16fc2c
 #define PORT_ALPM_CTL(port)			_MMIO_PORT(port, _PORT_ALPM_CTL_A, _PORT_ALPM_CTL_B)
 #define  PORT_ALPM_CTL_ALPM_AUX_LESS_ENABLE	REG_BIT(31)
-#define  PORT_ALPM_CTL_MAX_PHY_SWING_SETUP_MASK	REG_GENMASK(23, 20)
+#define  PORT_ALPM_CTL_MAX_PHY_SWING_SETUP_MASK	REG_GENMASK(25, 20)
 #define  PORT_ALPM_CTL_MAX_PHY_SWING_SETUP(val)	REG_FIELD_PREP(PORT_ALPM_CTL_MAX_PHY_SWING_SETUP_MASK, val)
 #define  PORT_ALPM_CTL_MAX_PHY_SWING_HOLD_MASK	REG_GENMASK(19, 16)
 #define  PORT_ALPM_CTL_MAX_PHY_SWING_HOLD(val)	REG_FIELD_PREP(PORT_ALPM_CTL_MAX_PHY_SWING_HOLD_MASK, val)