39 lines
1.2 KiB
Diff
39 lines
1.2 KiB
Diff
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
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@@ -259,6 +259,7 @@ static int ipq806x_gmac_probe(struct pla
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{
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struct plat_stmmacenet_data *plat_dat;
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struct stmmac_resources stmmac_res;
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+ struct stmmac_dma_cfg *dma_cfg;
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struct device *dev = &pdev->dev;
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struct ipq806x_gmac *gmac;
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int val;
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@@ -348,6 +349,16 @@ static int ipq806x_gmac_probe(struct pla
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plat_dat->bsp_priv = gmac;
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plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
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+ dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
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+ GFP_KERNEL);
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+
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+ dma_cfg->pbl = 32;
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+ dma_cfg->burst_len = DMA_AXI_BLEN_16 |
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+ (7 << DMA_AXI_RD_OSR_LMT_SHIFT) |
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+ (7 << DMA_AXI_WR_OSR_LMT_SHIFT);
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+
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+ plat_dat->dma_cfg = dma_cfg;
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+
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return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
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}
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--- a/include/linux/stmmac.h
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+++ b/include/linux/stmmac.h
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@@ -73,6 +73,9 @@
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| DMA_AXI_BLEN_32 | DMA_AXI_BLEN_64 \
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| DMA_AXI_BLEN_128 | DMA_AXI_BLEN_256)
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+#define DMA_AXI_RD_OSR_LMT_SHIFT 16
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+#define DMA_AXI_WR_OSR_LMT_SHIFT 20
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+
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/* Platfrom data for platform device structure's platform_data field */
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struct stmmac_mdio_bus_data {
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