From 21e04f0f54c173acdd03035029e5d17ff3c82d27 Mon Sep 17 00:00:00 2001 From: Alexey Brodkin <Alexey.Brodkin@synopsys.com> Date: Thu, 17 Mar 2016 12:41:52 +0300 Subject: [PATCH] ARC: [plat-axs10x] add Ethernet PHY description in .dts 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 <abrodkin@synopsys.com> Cc: Rob Herring <robh@kernel.org> Cc: Phil Reid <preid@electromag.com.au> Cc: David S. Miller <davem@davemloft.net> Cc: linux-kernel@vger.kernel.org Cc: netdev@vger.kernel.org Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- 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 44a578c10732..ab5d5701e11d 100644 --- a/arch/arc/boot/dts/axs10x_mb.dtsi +++ b/arch/arc/boot/dts/axs10x_mb.dtsi @@ -47,6 +47,14 @@ ethernet@0x18000 { 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 { -- 2.30.9