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net: stmmac: dwmac-sun8i: Provide TX and RX fifo sizes 

MTU cannot be changed on dwmac-sun8i. (ip link set eth0 mtu xxx returning EINVAL)
This is due to tx_fifo_size being 0, since this value is used to compute valid
MTU range.
Like dwmac-sunxi (with commit 806fd188ce ("net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes"))
dwmac-sun8i need to have tx and rx fifo sizes set.
I have used values from datasheets.
After this patch, setting a non-default MTU (like 1000) value works and network is still useable.

Tested-on: sun8i-h3-orangepi-pc
Tested-on: sun8i-r40-bananapi-m2-ultra
Tested-on: sun50i-a64-bananapi-m64
Tested-on: sun50i-h5-nanopi-neo-plus2
Tested-on: sun50i-h6-pine-h64
Fixes: 9f93ac8d40 ("net-next: stmmac: Add dwmac-sun8i")
Reported-by: Belisko Marek <marek.belisko@gmail.com>
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Corentin Labbe 2021-03-19 13:44:22 +00:00 committed by David S. Miller
parent f91a50d8b5
commit 014dfa26ce
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
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@ -1214,6 +1214,8 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
plat_dat->init = sun8i_dwmac_init;
plat_dat->exit = sun8i_dwmac_exit;
plat_dat->setup = sun8i_dwmac_setup;
plat_dat->tx_fifo_size = 4096;
plat_dat->rx_fifo_size = 16384;
ret = sun8i_dwmac_set_syscon(&pdev->dev, plat_dat);
if (ret)