diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 94bf065c8ac7..e2d37ee221b8 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -3761,7 +3761,9 @@ Sysreg	ICC_CR0_EL1	3	1	12	0	1
 Res0	63:39
 Field	38	PID
 Field	37:32	IPPT
-Res0	31:1
+Res0	31:3
+Field	2	LINK_IDLE
+Field	1	LINK
 Field	0	EN
 EndSysreg
 
diff --git a/drivers/irqchip/irq-gic-v5.c b/drivers/irqchip/irq-gic-v5.c
index ac2d423b1723..5f2551cf077d 100644
--- a/drivers/irqchip/irq-gic-v5.c
+++ b/drivers/irqchip/irq-gic-v5.c
@@ -974,7 +974,8 @@ static void gicv5_cpu_disable_interrupts(void)
 {
 	u64 cr0;
 
-	cr0 = FIELD_PREP(ICC_CR0_EL1_EN, 0);
+	cr0 = read_sysreg_s(SYS_ICC_CR0_EL1);
+	cr0 &= ~ICC_CR0_EL1_EN_MASK;
 	write_sysreg_s(cr0, SYS_ICC_CR0_EL1);
 	isb();
 }
@@ -991,7 +992,8 @@ static void gicv5_cpu_enable_interrupts(void)
 	pcr = FIELD_PREP(ICC_PCR_EL1_PRIORITY, GICV5_IRQ_PRI_MI);
 	write_sysreg_s(pcr, SYS_ICC_PCR_EL1);
 
-	cr0 = FIELD_PREP(ICC_CR0_EL1_EN, 1);
+	cr0 = read_sysreg_s(SYS_ICC_CR0_EL1);
+	cr0 |= ICC_CR0_EL1_EN_MASK;
 	write_sysreg_s(cr0, SYS_ICC_CR0_EL1);
 }