Re: [PATCH] arm64: dts: meson: add ethernet fifo sizes

From: Martin Blumenstingl
Date: Tue Jul 23 2019 - 15:56:35 EST

On Thu, Jul 18, 2019 at 11:03 AM Jerome Brunet <jbrunet@xxxxxxxxxxxx> wrote:
> If unspecified in DT, the fifo sizes are not automatically detected by
> the dwmac1000 dma driver and the reported fifo sizes default to 0.
> Because of this, flow control will be turned off on the device.
> Add the fifo sizes provided by the datasheets in the SoC in DT so
> flow control may be enabled if necessary.
(only worth updating if you have to re-send it for whatever reason)
as far as I understand the stmmac code
(dwmac1000_dma_operation_mode_{rx,tx}) "RX flow control" depends on
the RX FIFO size but TX doesn't

> Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>