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net: stmmac: fixed the pbl setting with DT
This patch fixed the pbl(programmable burst length) setting using DT. Even though the default pbl is 8, If there is no pbl property in device tree file, pbl is set 0 and it causes bandwidth degradation. Signed-off-by: Byungho An <bh74.an@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -71,14 +71,18 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
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plat->force_sf_dma_mode = 1;
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}
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dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), GFP_KERNEL);
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if (!dma_cfg)
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return -ENOMEM;
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plat->dma_cfg = dma_cfg;
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of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
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dma_cfg->fixed_burst = of_property_read_bool(np, "snps,fixed-burst");
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dma_cfg->mixed_burst = of_property_read_bool(np, "snps,mixed-burst");
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if (of_find_property(np, "snps,pbl", NULL)) {
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dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
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GFP_KERNEL);
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if (!dma_cfg)
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return -ENOMEM;
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plat->dma_cfg = dma_cfg;
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of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
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dma_cfg->fixed_burst =
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of_property_read_bool(np, "snps,fixed-burst");
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dma_cfg->mixed_burst =
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of_property_read_bool(np, "snps,mixed-burst");
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}
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return 0;
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}
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