Re: [PATCH net] net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes

[Chen-Yu Tsai]

On Wed, Apr 15, 2020 at 6:40 AM Florian Fainelli <f.fainelli@xxxxxxxxx> 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@xxxxxxxx>
> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>

Acked-by: Chen-Yu Tsai <wens@xxxxxxxx>