diff --git a/Documentation/arch/arm64/silicon-errata.rst b/Documentation/arch/arm64/silicon-errata.rst
index bb62e0dbd5465ca0231b395ace04236d14e99f9b..30d3091452f959a5161bafa27eb816f3e81632cd 100644
--- a/Documentation/arch/arm64/silicon-errata.rst
+++ b/Documentation/arch/arm64/silicon-errata.rst
@@ -205,6 +205,8 @@ stable kernels.
 +----------------+-----------------+-----------------+-----------------------------+
 | Hisilicon      | LINXICORE9100   | #162100125      | HISILICON_ERRATUM_162100125 |
 +----------------+-----------------+-----------------+-----------------------------+
+| Hisilicon      | LINXICORE9100   | #1980005        | HISILICON_ERRATUM_1980005   |
++----------------+-----------------+-----------------+-----------------------------+
 +----------------+-----------------+-----------------+-----------------------------+
 | Qualcomm Tech. | Kryo/Falkor v1  | E1003           | QCOM_FALKOR_ERRATUM_1003    |
 +----------------+-----------------+-----------------+-----------------------------+
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 73333648a98c68cc61ea5a19edd4429e33af5fa3..2aca373a703843367541bf90d877a7352553a3cb 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1170,6 +1170,16 @@ config HISILICON_ERRATUM_162100125
 
 	  If unsure, say Y.
 
+config HISILICON_ERRATUM_1980005
+	bool "Hisilicon erratum 1980005: IDC support"
+	default n
+	help
+	  Some of the Hisilicon linxicore support idc but report wrong value to
+	  the kernel, which result to the unnecessary cache flush, leading to
+	  performance degradation.
+
+	  If unsure, say N.
+
 config QCOM_FALKOR_ERRATUM_1003
 	bool "Falkor E1003: Incorrect translation due to ASID change"
 	default y
diff --git a/arch/arm64/include/asm/cache.h b/arch/arm64/include/asm/cache.h
index ceb368d33bf4eae8a054c16e54d578afde28e2f5..1613779be63acfdcb31ecf782088d3d8b1ecddc7 100644
--- a/arch/arm64/include/asm/cache.h
+++ b/arch/arm64/include/asm/cache.h
@@ -112,6 +112,15 @@ int cache_line_size(void);
 static inline u32 __attribute_const__ read_cpuid_effective_cachetype(void)
 {
 	u32 ctr = read_cpuid_cachetype();
+#ifdef CONFIG_HISILICON_ERRATUM_1980005
+	static const struct midr_range idc_support_list[] = {
+		MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
+		MIDR_REV(MIDR_HISI_LINXICORE9100, 1, 0),
+		{ /* sentinel */ }
+	};
+	if (is_midr_in_range_list(read_cpuid_id(), idc_support_list))
+		ctr |= BIT(CTR_EL0_IDC_SHIFT);
+#endif
 
 	if (!(ctr & BIT(CTR_EL0_IDC_SHIFT))) {
 		u64 clidr = read_sysreg(clidr_el1);
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index e40b76ac471109336c10bb02da1789194b7c3f89..a686a96d966aa652d70c834b8fd8259b7478403f 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c
@@ -60,6 +60,30 @@ is_kryo_midr(const struct arm64_cpu_capabilities *entry, int scope)
 	return model == entry->midr_range.model;
 }
 
+#ifdef CONFIG_HISILICON_ERRATUM_1980005
+static bool
+hisilicon_1980005_match(const struct arm64_cpu_capabilities *entry,
+			int scope)
+{
+	static const struct midr_range idc_support_list[] = {
+		MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
+		MIDR_REV(MIDR_HISI_LINXICORE9100, 1, 0),
+		{ /* sentinel */ }
+	};
+
+	return is_midr_in_range_list(read_cpuid_id(), idc_support_list);
+}
+
+static void
+hisilicon_1980005_enable(const struct arm64_cpu_capabilities *__unused)
+{
+	__set_bit(ARM64_HAS_CACHE_IDC, system_cpucaps);
+	arm64_ftr_reg_ctrel0.sys_val |= BIT(CTR_EL0_IDC_SHIFT);
+	arm64_ftr_reg_ctrel0.strict_mask &= ~BIT(CTR_EL0_IDC_SHIFT);
+	sysreg_clear_set(sctlr_el1, SCTLR_EL1_UCT, 0);
+}
+#endif
+
 static bool
 has_mismatched_cache_type(const struct arm64_cpu_capabilities *entry,
 			  int scope)
@@ -567,6 +591,15 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
 		ERRATA_MIDR_RANGE_LIST(hisilicon_erratum_162100125_cpus),
 	},
 #endif
+#ifdef CONFIG_HISILICON_ERRATUM_1980005
+	{
+		.desc = "Hisilicon erratum 1980005 (IDC)",
+		.capability = ARM64_WORKAROUND_HISILICON_1980005,
+		.matches = hisilicon_1980005_match,
+		.type = ARM64_CPUCAP_SYSTEM_FEATURE,
+		.cpu_enable = hisilicon_1980005_enable,
+	},
+#endif
 #ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003
 	{
 		.desc = "Qualcomm Technologies Falkor/Kryo erratum 1003",
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index cb4996edc09fd668633630f7b5a895e6560b0c2a..0b62edb918764132bfa87d20d4b340ecd9dd8efa 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -102,3 +102,4 @@ WORKAROUND_REPEAT_TLBI
 WORKAROUND_SPECULATIVE_AT
 WORKAROUND_HISILICON_ERRATUM_162100125
 WORKAROUND_HISI_HIP08_RU_PREFETCH
+WORKAROUND_HISILICON_1980005