4.5-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alexey Brodkin <[email protected]> commit 667a490bdb6e27db0887d2ca515b907d6aa87118 upstream. Commit e34d65696d2e ("stmmac: create of compatible mdio bus for stmmac driver") broke DW GMAC functionality on ARC AXS10x boards: 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 <[email protected]> Cc: Rob Herring <[email protected]> Cc: Phil Reid <[email protected]> Cc: David S. Miller <[email protected]> Cc: [email protected] Cc: [email protected] Reviewed-by: Sergei Shtylyov <[email protected]> Signed-off-by: Vineet Gupta <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/arc/boot/dts/axs10x_mb.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) --- 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 {
