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| author | Christian Lamparter <chunkeey@gmail.com> | 2018-08-10 23:24:47 +0200 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2018-08-13 08:48:37 +0200 |
| commit | f3ffac90bc7266b7d917616f3233f58e8c08a196 (patch) | |
| tree | 9271943472888de766c6523b0702cba95a03ae51 /target/linux/ath79/files | |
| parent | 7b1b49bd32199e8d0469efc8c02050dd740b744d (diff) | |
| download | upstream-f3ffac90bc7266b7d917616f3233f58e8c08a196.tar.gz upstream-f3ffac90bc7266b7d917616f3233f58e8c08a196.tar.bz2 upstream-f3ffac90bc7266b7d917616f3233f58e8c08a196.zip | |
ath79: gmac: add parsers for rxd(v)- and tx(d|en)-delay for AR9344
Some AR9344 boards do very poorly with the default settings and
need custom rxdv-delay, rxd-delay, txd-delay, txen-delay flags
to perform reasonably.
In this case the WD My Net Wi-Fi Range Extender can not even
manage 10Mbps on a 1Gbit link:
root@AR9344:~# iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from client [...]
[ 5] local [...] connected to client
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 1.09 MBytes 9.16 Mbits/sec
[ 5] 1.00-2.00 sec 895 KBytes 7.33 Mbits/sec
[ 5] 2.00-3.00 sec 762 KBytes 6.25 Mbits/sec
[...]
[ 5] 10.00-10.03 sec 17.0 KBytes 4.74 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.03 sec 9.00 MBytes 7.52 Mbits/sec
with but with the correct settings in place, it does much better:
root@AR9344:~# iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from client [...]
[ 5] local [...] connected to client
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 23.1 MBytes 193 Mbits/sec
[ 5] 1.00-2.00 sec 23.1 MBytes 194 Mbits/sec
[ 5] 2.00-3.00 sec 23.2 MBytes 195 Mbits/sec
[...]
[ 5] 10.00-10.04 sec 710 KBytes 180 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.04 sec 237 MBytes 198 Mbits/sec
The tx data and enable delay bits definitions are taken from Atheros'
AR9344 Data Sheet Section "8.6.1 Ethernet Configuration (ETH_CFG)" on
page 153.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Diffstat (limited to 'target/linux/ath79/files')
| -rw-r--r-- | target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_gmac.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_gmac.c b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_gmac.c index 2e5fb3a641..e69abb6438 100644 --- a/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_gmac.c +++ b/target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_gmac.c @@ -57,6 +57,14 @@ static void ag71xx_setup_gmac_934x(struct device_node *np, void __iomem *base) ag71xx_of_bit(np, "switch-phy-swap", &val, AR934X_ETH_CFG_SW_PHY_SWAP); ag71xx_of_bit(np, "switch-only-mode", &val, AR934X_ETH_CFG_SW_ONLY_MODE); + ag71xx_of_set(np, "rxdv-delay", &val, + AR934X_ETH_CFG_RDV_DELAY_SHIFT, 0x3); + ag71xx_of_set(np, "rxd-delay", &val, + AR934X_ETH_CFG_RXD_DELAY_SHIFT, 0x3); + ag71xx_of_set(np, "txd-delay", &val, + AR934X_ETH_CFG_TXD_DELAY_SHIFT, 0x3); + ag71xx_of_set(np, "txen-delay", &val, + AR934X_ETH_CFG_TXE_DELAY_SHIFT, 0x3); __raw_writel(val, base + AR934X_GMAC_REG_ETH_CFG); } |