net: stmmac: add support for independent DMA pbl for tx/rx

[karo-tx-linux.git] / Documentation / devicetree / bindings / net / stmmac.txt

diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt
index b95ff998ba73c8284f41f74cfaaa9d863d59dfbb..8080038ff1b2424edf0544919c8fd48a4628b126 100644 (file)
--- a/Documentation/devicetree/bindings/net/stmmac.txt
+++ b/Documentation/devicetree/bindings/net/stmmac.txt
@@ -34,7 +34,11 @@ Optional properties:
   platforms.
 - tx-fifo-depth: See ethernet.txt file in the same directory
 - rx-fifo-depth: See ethernet.txt file in the same directory
-- snps,pbl             Programmable Burst Length
+- snps,pbl             Programmable Burst Length (tx and rx)
+- snps,txpbl           Tx Programmable Burst Length. Only for GMAC and newer.
+                       If set, DMA tx will use this value rather than snps,pbl.
+- snps,rxpbl           Rx Programmable Burst Length. Only for GMAC and newer.
+                       If set, DMA rx will use this value rather than snps,pbl.
 - snps,aal             Address-Aligned Beats
 - snps,fixed-burst     Program the DMA to use the fixed burst mode
 - snps,mixed-burst     Program the DMA to use the mixed burst mode