Re: [PATCH] arm64: tegra: Fix ethernet phy-mode for Jetson Xavier

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On Fri, May 01, 2020 at 08:27:56AM +0100, Jon Hunter wrote:
> The 'phy-mode' property is currently defined as 'rgmii' for Jetson
> Xavier. This indicates that the RGMII RX and TX delays are set by the
> MAC and the internal delays set by the PHY are not used.
> 
> If the Marvell PHY driver is enabled, such that it is used and not the
> generic PHY, ethernet failures are seen (DHCP is failing to obtain an
> IP address) and this is caused because the Marvell PHY driver is
> disabling the internal RX and TX delays. For Jetson Xavier the internal
> PHY RX and TX delay should be used and so fix this by setting the
> 'phy-mode' to 'rgmii-id' and not 'rgmii'.
> 
> Cc: stable@xxxxxxxxxxxxxxx
> 
> Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Added a Fixes: tag and applied to for-5.8/arm64/dt, thanks.

Thierry

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