| Message ID | 20200414223952.5886-1-f.fainelli@gmail.com |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
| Series | [net] net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes | expand |
On Wed, Apr 15, 2020 at 6:40 AM Florian Fainelli <f.fainelli@gmail.com> wrote: > > After commit bfcb813203e619a8960a819bf533ad2a108d8105 ("net: dsa: > configure the MTU for switch ports") my Lamobo R1 platform which uses > an allwinner,sun7i-a20-gmac compatible Ethernet MAC started to fail > by rejecting a MTU of 1536. The reason for that is that the DMA > capabilities are not readable on this version of the IP, and there > is also no 'tx-fifo-depth' property being provided in Device Tree. The > property is documented as optional, and is not provided. > > Chen-Yu indicated that the FIFO sizes are 4KB for TX and 16KB for RX, so > provide these values through platform data as an immediate fix until > various Device Tree sources get updated accordingly. > > Fixes: eaf4fac47807 ("net: stmmac: Do not accept invalid MTU values") > Suggested-by: Chen-Yu Tsai <wens@csie.org> > Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Chen-Yu Tsai <wens@csie.org>
From: Florian Fainelli <f.fainelli@gmail.com> Date: Tue, 14 Apr 2020 15:39:52 -0700 > After commit bfcb813203e619a8960a819bf533ad2a108d8105 ("net: dsa: > configure the MTU for switch ports") my Lamobo R1 platform which uses > an allwinner,sun7i-a20-gmac compatible Ethernet MAC started to fail > by rejecting a MTU of 1536. The reason for that is that the DMA > capabilities are not readable on this version of the IP, and there > is also no 'tx-fifo-depth' property being provided in Device Tree. The > property is documented as optional, and is not provided. > > Chen-Yu indicated that the FIFO sizes are 4KB for TX and 16KB for RX, so > provide these values through platform data as an immediate fix until > various Device Tree sources get updated accordingly. > > Fixes: eaf4fac47807 ("net: stmmac: Do not accept invalid MTU values") > Suggested-by: Chen-Yu Tsai <wens@csie.org> > Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Applied and queued up for -stable, thanks.
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c index 7d40760e9ba8..0e1ca2cba3c7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c @@ -150,6 +150,8 @@ static int sun7i_gmac_probe(struct platform_device *pdev) plat_dat->init = sun7i_gmac_init; plat_dat->exit = sun7i_gmac_exit; plat_dat->fix_mac_speed = sun7i_fix_speed; + plat_dat->tx_fifo_size = 4096; + plat_dat->rx_fifo_size = 16384; ret = sun7i_gmac_init(pdev, plat_dat->bsp_priv); if (ret)
After commit bfcb813203e619a8960a819bf533ad2a108d8105 ("net: dsa: configure the MTU for switch ports") my Lamobo R1 platform which uses an allwinner,sun7i-a20-gmac compatible Ethernet MAC started to fail by rejecting a MTU of 1536. The reason for that is that the DMA capabilities are not readable on this version of the IP, and there is also no 'tx-fifo-depth' property being provided in Device Tree. The property is documented as optional, and is not provided. Chen-Yu indicated that the FIFO sizes are 4KB for TX and 16KB for RX, so provide these values through platform data as an immediate fix until various Device Tree sources get updated accordingly. Fixes: eaf4fac47807 ("net: stmmac: Do not accept invalid MTU values") Suggested-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 2 ++ 1 file changed, 2 insertions(+)