soc: it8xxx2: correct extensions
it8xxx2 supports 'm', 'a', and 'c' extensions.
Enable them to save flash space and also improve
latency of fetching code from flash.
Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
diff --git a/soc/riscv/riscv-ite/CMakeLists.txt b/soc/riscv/riscv-ite/CMakeLists.txt
index 93bc016..0ffddb0 100644
--- a/soc/riscv/riscv-ite/CMakeLists.txt
+++ b/soc/riscv/riscv-ite/CMakeLists.txt
@@ -1,3 +1,3 @@
add_subdirectory(common)
add_subdirectory(${SOC_SERIES})
-zephyr_compile_options(-march=rv32i)
+zephyr_compile_options(-march=rv32imac)
diff --git a/soc/riscv/riscv-ite/it8xxx2/Kconfig.soc b/soc/riscv/riscv-ite/it8xxx2/Kconfig.soc
index 1b23e70..5da2ec2 100644
--- a/soc/riscv/riscv-ite/it8xxx2/Kconfig.soc
+++ b/soc/riscv/riscv-ite/it8xxx2/Kconfig.soc
@@ -8,7 +8,7 @@
config SOC_IT8XXX2
bool "ITE IT8XXX2 system implementation"
select RISCV
- select ATOMIC_OPERATIONS_C
+ select ATOMIC_OPERATIONS_BUILTIN
endchoice
