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Commit fa067467 authored by Sonic Zhang's avatar Sonic Zhang Committed by David S. Miller
Browse files

stmmac: Add an optional device tree property "snps,burst_len" 



This property define the AXI bug lenth.

Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dec2165f

Documentation/devicetree/bindings/net/stmmac.txt

+1 −0
Original line number Original line Diff line number Diff line
@@ -43,6 +43,7 @@ Optional properties: 
  available this clock is used for programming the Timestamp Addend Register.

  available this clock is used for programming the Timestamp Addend Register.

  If not passed then the system clock will be used and this is fine on some

  If not passed then the system clock will be used and this is fine on some

  platforms.

  platforms.

- snps,burst_len: The AXI burst lenth value of the AXI BUS MODE register.





Examples:

Examples:

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -235,6 +235,9 @@ static int stmmac_probe_config_dt(struct platform_device *pdev, 
			of_property_read_bool(np, "snps,fixed-burst");

			of_property_read_bool(np, "snps,fixed-burst");

		dma_cfg->mixed_burst =

		dma_cfg->mixed_burst =

			of_property_read_bool(np, "snps,mixed-burst");

			of_property_read_bool(np, "snps,mixed-burst");

		of_property_read_u32(np, "snps,burst_len", &dma_cfg->burst_len);

		if (dma_cfg->burst_len < 0 || dma_cfg->burst_len > 256)

			dma_cfg->burst_len = 0;

	}

	}

	plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode");

	plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode");

	if (plat->force_thresh_dma_mode) {

	if (plat->force_thresh_dma_mode) {