Hi, On Thursday 17 March 2016 03:11 PM, Alexey Brodkin wrote: > 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 <abrod...@synopsys.com> > Cc: Rob Herring <r...@kernel.org> > Cc: Phil Reid <pr...@electromag.com.au> > Cc: David S. Miller <da...@davemloft.net> > Cc: linux-ker...@vger.kernel.org > Cc: netdev@vger.kernel.org > Cc: sta...@vger.kernel.org # 4.5.x > Cc: Sergei Shtylyov <sergei.shtyl...@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@1 { > + reg = <1>; > + }; > + }; > }; > > ehci@0x40000 {
So above DT fix for ARC went into 4.6-rc1 and ethernet was still broken on axs103 board. ---------->8------------- libphy: PHY stmmac-0:ffffffff not found eth0: Could not attach to PHY stmmac_open: Cannot attach to PHY (error: -19) ---------->8------------- On 4.6-rc2 if I revert the DT change, ethernet works again. @Giuseppe, @Phil, @Gabriel, I see you have made changes in that area. I presume that above revert is the right/sufficient thing or do we need to do something else as well. TIA, -Vineet
