riscv: implement Zicbom-based CMO instructions + the t-head variant

[linux-block.git] / arch / riscv / Kconfig.erratas

diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
index f62b62807e853a7a608bb47a516c02220b25f64b..6850e9389930240eab28852e1c4f8f7bd3f07fc3 100644 (file)
--- a/arch/riscv/Kconfig.erratas
+++ b/arch/riscv/Kconfig.erratas
@@ -55,4 +55,15 @@ config ERRATA_THEAD_PBMT
 
          If you don't know what to do here, say "Y".
 
+config ERRATA_THEAD_CMO
+       bool "Apply T-Head cache management errata"
+       depends on ERRATA_THEAD
+       select RISCV_DMA_NONCOHERENT
+       default y
+       help
+         This will apply the cache management errata to handle the
+         non-standard handling on non-coherent operations on T-Head SoCs.
+
+         If you don't know what to do here, say "Y".
+
 endmenu # "CPU errata selection"