From 07f7321c0f79c0b800d28898a480d044f839e813 Mon Sep 17 00:00:00 2001 From: John Crispin 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(-) --- 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;