Commit 44781fef authored by Joao Pinto's avatar Joao Pinto Committed by David S. Miller

net: stmmac: fix cbs configuration

Sending again, because forgot to include net-dev.

The QoS IP does not accept AVB capabilities to default/queue 0, this way we
guarantee 75% bandwidth for AVB. This patch assures that only queues >= 1
gets CBS confgured. Additional info was also added to stmmac.txt.
Reported-by: default avatarNiklas Cassel <niklas.cassel@axis.com>
Signed-off-by: default avatarJoao Pinto <jpinto@synopsys.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a6fc09df
...@@ -103,6 +103,8 @@ Optional properties: ...@@ -103,6 +103,8 @@ Optional properties:
- Choose one of these modes: - Choose one of these modes:
- snps,dcb-algorithm: TX queue will be working in DCB - snps,dcb-algorithm: TX queue will be working in DCB
- snps,avb-algorithm: TX queue will be working in AVB - snps,avb-algorithm: TX queue will be working in AVB
[Attention] Queue 0 is reserved for legacy traffic
and so no AVB is available in this queue.
- Configure Credit Base Shaper (if AVB Mode selected): - Configure Credit Base Shaper (if AVB Mode selected):
- snps,send_slope: enable Low Power Interface - snps,send_slope: enable Low Power Interface
- snps,idle_slope: unlock on WoL - snps,idle_slope: unlock on WoL
......
...@@ -1880,7 +1880,8 @@ static void stmmac_configure_cbs(struct stmmac_priv *priv) ...@@ -1880,7 +1880,8 @@ static void stmmac_configure_cbs(struct stmmac_priv *priv)
u32 mode_to_use; u32 mode_to_use;
u32 queue; u32 queue;
for (queue = 0; queue < tx_queues_count; queue++) { /* queue 0 is reserved for legacy traffic */
for (queue = 1; queue < tx_queues_count; queue++) {
mode_to_use = priv->plat->tx_queues_cfg[queue].mode_to_use; mode_to_use = priv->plat->tx_queues_cfg[queue].mode_to_use;
if (mode_to_use == MTL_QUEUE_DCB) if (mode_to_use == MTL_QUEUE_DCB)
continue; continue;
......
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