Initial commit

target/linux/bcm27xx/patches-5.10/950-0131-bcmgenet-Better-coalescing-parameter-defaults.patch

@@ -0,0 +1,43 @@
+From c69b192667d50c317bab33e283e7cfce1622e499 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 27 Mar 2019 13:45:46 +0000
+Subject: [PATCH] bcmgenet: Better coalescing parameter defaults
+
+Set defaults for TX and RX packet coalescing to be equivalent to:
+
+  # ethtool -C eth0 tx-frames 10
+  # ethtool -C eth0 rx-usecs 50
+
+This may be something we want to set via DT parameters in the
+future.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/net/ethernet/broadcom/genet/bcmgenet.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
++++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+@@ -2595,7 +2595,7 @@ static void bcmgenet_init_tx_ring(struct
+ 
+ 	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_PROD_INDEX);
+ 	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_CONS_INDEX);
+-	bcmgenet_tdma_ring_writel(priv, index, 1, DMA_MBUF_DONE_THRESH);
++	bcmgenet_tdma_ring_writel(priv, index, 10, DMA_MBUF_DONE_THRESH);
+ 	/* Disable rate control for now */
+ 	bcmgenet_tdma_ring_writel(priv, index, flow_period_val,
+ 				  TDMA_FLOW_PERIOD);
+@@ -4058,9 +4058,12 @@ static int bcmgenet_probe(struct platfor
+ 	netif_set_real_num_rx_queues(priv->dev, priv->hw_params->rx_queues + 1);
+ 
+ 	/* Set default coalescing parameters */
+-	for (i = 0; i < priv->hw_params->rx_queues; i++)
++	for (i = 0; i < priv->hw_params->rx_queues; i++) {
+ 		priv->rx_rings[i].rx_max_coalesced_frames = 1;
++		priv->rx_rings[i].rx_coalesce_usecs = 50;
++	}
+ 	priv->rx_rings[DESC_INDEX].rx_max_coalesced_frames = 1;
++	priv->rx_rings[DESC_INDEX].rx_coalesce_usecs = 50;
+ 
+ 	/* libphy will determine the link state */
+ 	netif_carrier_off(dev);