diff -aurN a/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h b/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h
--- a/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h	2019-02-12 19:46:14.000000000 +0100
+++ b/arch/mips/include/asm/mach-lantiq/xway/xway_dma.h	2019-02-16 18:03:50.504856916 +0100
@@ -19,7 +19,7 @@
 #define LTQ_DMA_H__
 
 #define LTQ_DESC_SIZE		0x08	/* each descriptor is 64bit */
-#define LTQ_DESC_NUM		0x40	/* 64 descriptors / channel */
+#define LTQ_DESC_NUM		0x80	/* 128 descriptors / channel */
 
 #define LTQ_DMA_OWN		BIT(31) /* owner bit */
 #define LTQ_DMA_C		BIT(30) /* complete bit */