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authorSonic Zhang <sonic.zhang@analog.com>2013-08-28 18:55:39 +0800
committerDavid S. Miller <davem@davemloft.net>2013-08-30 17:26:09 -0400
commite2a240c7d3bcebf90936cc7c22c2729b3a4cec1f (patch)
tree3f64f44e21ffb77d25c5680cc92ffe579ae9648b /Documentation/networking
parent816c5b5b016acde51f0547cf1657d87cf22a6d47 (diff)
downloadop-kernel-dev-e2a240c7d3bcebf90936cc7c22c2729b3a4cec1f.zip
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driver:net:stmmac: Disable DMA store and forward mode if platform data force_thresh_dma_mode is set.
Some synopsys ip implementation doesn't support DMA store and forward mode, such as BF60x. So, set force_thresh_dma_mode to use DMA thresholds only. Update document and devicetree as well. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/stmmac.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/networking/stmmac.txt b/Documentation/networking/stmmac.txt
index 654d2e5..457b8bb 100644
--- a/Documentation/networking/stmmac.txt
+++ b/Documentation/networking/stmmac.txt
@@ -123,6 +123,7 @@ struct plat_stmmacenet_data {
int bugged_jumbo;
int pmt;
int force_sf_dma_mode;
+ int force_thresh_dma_mode;
int riwt_off;
void (*fix_mac_speed)(void *priv, unsigned int speed);
void (*bus_setup)(void __iomem *ioaddr);
@@ -159,6 +160,8 @@ Where:
o pmt: core has the embedded power module (optional).
o force_sf_dma_mode: force DMA to use the Store and Forward mode
instead of the Threshold.
+ o force_thresh_dma_mode: force DMA to use the Shreshold mode other than
+ the Store and Forward mode.
o riwt_off: force to disable the RX watchdog feature and switch to NAPI mode.
o fix_mac_speed: this callback is used for modifying some syscfg registers
(on ST SoCs) according to the link speed negotiated by the
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