target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch

   1 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
   2 +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
   3 @@ -259,6 +259,7 @@ static int ipq806x_gmac_probe(struct pla
   4  {
   5         struct plat_stmmacenet_data *plat_dat;
   6         struct stmmac_resources stmmac_res;
   7 +       struct stmmac_dma_cfg *dma_cfg;
   8         struct device *dev = &pdev->dev;
   9         struct ipq806x_gmac *gmac;
  10         int val;
  11 @@ -348,6 +349,16 @@ static int ipq806x_gmac_probe(struct pla
  12         plat_dat->bsp_priv = gmac;
  13         plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
  14
  15 +       dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
  16 +                              GFP_KERNEL);
  17 +
  18 +       dma_cfg->pbl = 32;
  19 +       dma_cfg->burst_len = DMA_AXI_BLEN_16 |
  20 +               (7 << DMA_AXI_RD_OSR_LMT_SHIFT) |
  21 +               (7 << DMA_AXI_WR_OSR_LMT_SHIFT);
  22 +
  23 +       plat_dat->dma_cfg = dma_cfg;
  24 +
  25         return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
  26  }
  27
  28 --- a/include/linux/stmmac.h
  29 +++ b/include/linux/stmmac.h
  30 @@ -73,6 +73,9 @@
  31                         | DMA_AXI_BLEN_32 | DMA_AXI_BLEN_64 \
  32                         | DMA_AXI_BLEN_128 | DMA_AXI_BLEN_256)
  33
  34 +#define DMA_AXI_RD_OSR_LMT_SHIFT       16
  35 +#define DMA_AXI_WR_OSR_LMT_SHIFT       20
  36 +
  37  /* Platfrom data for platform device structure's platform_data field */
  38
  39  struct stmmac_mdio_bus_data {