net: stmmac: configuration of CBS in case of a TX AVB queue

[linux-2.6-block.git] / Documentation / devicetree / bindings / net / stmmac.txt

diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt
index 04a258e2d4e07fd0f7b92066e30ac9a5d1efc2d2..a7b0e41cb2647060b10ee68ab77cf532d9bce3c1 100644 (file)
--- a/Documentation/devicetree/bindings/net/stmmac.txt
+++ b/Documentation/devicetree/bindings/net/stmmac.txt
@@ -92,8 +92,15 @@ Optional properties:
                - snps,tx-sched-dwrr: Deficit Weighted Round Robin
                - snps,tx-sched-sp: Strict priority
        - For each TX queue
-               - snps,weight: TX queue weight (if using a weighted algorithm)
-
+               - snps,weight: TX queue weight (if using a DCB weight algorithm)
+               - Choose one of these modes:
+                       - snps,dcb-algorithm: TX queue will be working in DCB
+                       - snps,avb-algorithm: TX queue will be working in AVB
+               - Configure Credit Base Shaper (if AVB Mode selected):
+                       - snps,send_slope: enable Low Power Interface
+                       - snps,idle_slope: unlock on WoL
+                       - snps,high_credit: max write outstanding req. limit
+                       - snps,low_credit: max read outstanding req. limit
 Examples:
 
        stmmac_axi_setup: stmmac-axi-config {
@@ -112,10 +119,19 @@ Examples:
        };
 
        mtl_tx_setup: tx-queues-config {
-               snps,tx-queues-to-use = <1>;
+               snps,tx-queues-to-use = <2>;
                snps,tx-sched-wrr;
                queue0 {
                        snps,weight = <0x10>;
+                       snps,dcb-algorithm;
+               };
+
+               queue1 {
+                       snps,avb-algorithm;
+                       snps,send_slope = <0x1000>;
+                       snps,idle_slope = <0x1000>;
+                       snps,high_credit = <0x3E800>;
+                       snps,low_credit = <0xFFC18000>;
                };
        };