diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 73333648a98c68cc61ea5a19edd4429e33af5fa3..cd7e351287df658260760b5f9c8cbe06678f9445 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1170,6 +1170,15 @@ config HISILICON_ERRATUM_162100125
 
 	  If unsure, say Y.
 
+config HISILICON_ERRATUM_1980005
+	bool "Hisilicon erratum IDC support"
+	default n
+	help
+	  The HiSilicon TSV100/200 SoC support idc but report wrong value to
+	  kernel.
+
+	  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..35d29c38d59fe2ae5a795fa42acbc71fe65ae013 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 = "Taishan IDC coherence workaround",
+		.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