lede/target/linux/bcm27xx/patches-6.12/950-0122-bcmgenet-Better-coalescing-parameter-defaults.patch
=?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= d81c03f05e bcm27xx: add 6.12 patches from RPi repo
These patches were generated from:
https://github.com/raspberrypi/linux/commits/rpi-6.12.y
With the following command:
git format-patch -N v6.12.27..HEAD
(HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e)

Exceptions:
- (def)configs patches
- github workflows patches
- applied & reverted patches
- readme patches
- wireless patches

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2025-06-20 17:01:06 +08:00

44 lines
1.7 KiB
Diff

From deba99bb2d9661e363cb7540871d2b733f012eb6 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
@@ -2664,7 +2664,7 @@ 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);
@@ -4139,9 +4139,12 @@ 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);