diff options
| author | Sonic Zhang <sonic.zhang@analog.com> | 2015-01-22 09:55:58 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-27 02:48:01 +0300 |
| commit | fa067467d84b9ebf6886383fe79715f3df90f255 (patch) | |
| tree | a87a515d75666fdf5c96410877a5341003f91a70 | |
| parent | dec2165ff38a99f937fe61875d102c6c8596c815 (diff) | |
| download | linux-fa067467d84b9ebf6886383fe79715f3df90f255.tar.xz | |
stmmac: Add an optional device tree property "snps,burst_len"
This property define the AXI bug lenth.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | Documentation/devicetree/bindings/net/stmmac.txt | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt index c41afd963edf..8ca65cec52ae 100644 --- a/Documentation/devicetree/bindings/net/stmmac.txt +++ b/Documentation/devicetree/bindings/net/stmmac.txt @@ -43,6 +43,7 @@ Optional properties: 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 platforms. +- snps,burst_len: The AXI burst lenth value of the AXI BUS MODE register. Examples: diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 879e29f48a89..fb846ebba1d9 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -235,6 +235,9 @@ static int stmmac_probe_config_dt(struct platform_device *pdev, of_property_read_bool(np, "snps,fixed-burst"); dma_cfg->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"); if (plat->force_thresh_dma_mode) { |