Following commit broke DW GMAC functionality on AXS10x boards: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e34d65696d2ef13dc32f2a162556c86c461ed763 That's what happens on eth0 up: --------------------------->8------------------------ libphy: PHY stmmac-0:ffffffff not found eth0: Could not attach to PHY stmmac_open: Cannot attach to PHY (error: -19) --------------------------->8------------------------ Simplest solution is to add PHY description in board's .dts. And so we do here. Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com> Cc: Rob Herring <robh at kernel.org> Cc: Phil Reid <preid at electromag.com.au> Cc: David S. Miller <davem at davemloft.net> Cc: linux-kernel at vger.kernel.org Cc: netdev at vger.kernel.org Cc: stable at vger.kernel.org # 4.5.x Cc: Sergei Shtylyov <sergei.shtylyov at cogentembedded.com> --- Changes v1 -> v2: * PHY node name changed to match real PHY number being used (Sergei) arch/arc/boot/dts/axs10x_mb.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi index 44a578c..ab5d570 100644 --- a/arch/arc/boot/dts/axs10x_mb.dtsi +++ b/arch/arc/boot/dts/axs10x_mb.dtsi @@ -47,6 +47,14 @@ clocks = <&apbclk>; clock-names = "stmmaceth"; max-speed = <100>; + mdio0 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "snps,dwmac-mdio"; + phy1: ethernet-phy at 1 { + reg = <1>; + }; + }; }; ehci at 0x40000 { -- 2.5.0
