From 5e0340c81b748fac82da2805498324ae95a640b9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=91=A8=E7=9D=BF?= <zrufo747@outlook.com>
Date: Thu, 2 Jan 2025 07:45:22 +0000
Subject: [PATCH] add doc

---
 modules/axhal/src/arch/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/axhal/src/arch/mod.rs b/modules/axhal/src/arch/mod.rs
index b255a74245..43d2c73a4a 100644
--- a/modules/axhal/src/arch/mod.rs
+++ b/modules/axhal/src/arch/mod.rs
@@ -16,7 +16,10 @@ cfg_if::cfg_if! {
 /// Cache operations.
 #[derive(Debug, Clone, Copy)]
 pub enum CacheOp {
+    // Write back to memory
     Clean,
+    // Invalidate cache
     Invalidate,
+    // Clean and invalidate
     CleanAndInvalidate,
 }