blob: 5ef0249c6a8e157a111750f7fc6795bd25e34f4f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
From 07f7321c0f79c0b800d28898a480d044f839e813 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 6 Dec 2012 11:59:23 +0100
Subject: [PATCH 104/123] MIPS: lantiq: adds 4dword burst length for dma
---
arch/mips/lantiq/xway/dma.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/mips/lantiq/xway/dma.c b/arch/mips/lantiq/xway/dma.c
index b5d76d1..986fbce 100644
--- a/arch/mips/lantiq/xway/dma.c
+++ b/arch/mips/lantiq/xway/dma.c
@@ -47,6 +47,7 @@
#define DMA_IRQ_ACK 0x7e /* IRQ status register */
#define DMA_POLL BIT(31) /* turn on channel polling */
#define DMA_CLK_DIV4 BIT(6) /* polling clock divider */
+#define DMA_4W_BURST BIT(2) /* 4 word burst length */
#define DMA_2W_BURST BIT(1) /* 2 word burst length */
#define DMA_MAX_CHANNEL 20 /* the soc has 20 channels */
#define DMA_ETOP_ENDIANESS (0xf << 8) /* endianess swap etop channels */
@@ -195,7 +196,8 @@ ltq_dma_init_port(int p)
* Tell the DMA engine to swap the endianess of data frames and
* drop packets if the channel arbitration fails.
*/
- ltq_dma_w32_mask(0, DMA_ETOP_ENDIANESS | DMA_PDEN,
+ ltq_dma_w32_mask(0, (DMA_4W_BURST << 4) | (DMA_4W_BURST << 2) |
+ DMA_ETOP_ENDIANESS | DMA_PDEN,
LTQ_DMA_PCTRL);
break;
--
1.7.10.4
|
