diff --git a/sdk/software/bsp/include/dma.h b/sdk/software/bsp/include/dma.h
index 76ca3f1..8187fb9 100644
--- a/sdk/software/bsp/include/dma.h
+++ b/sdk/software/bsp/include/dma.h
@@ -13,7 +13,7 @@ typedef struct {
     volatile uint32_t RESV[10];  // 0x18 ~ 0x3C: 保留空间，凑齐 0x40 字节
 } dma_ch_regs_t;
 
-// 8通道 DMA 控制器基地址
+// DMA 控制器基地址
 #define CDMA_MUX_BASE 0xbf300000
 #define DMA_CH(i)     ((volatile dma_ch_regs_t*)(CDMA_MUX_BASE + (i) * 0x40))