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Commit 099df531 authored by Evgeniy Didin's avatar Evgeniy Didin Committed by Greg Kroah-Hartman
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ARC: [plat-hsdk]: Switch ethernet phy-mode to rgmii-id 



[ Upstream commit 26907eb605fbc3ba9dbf888f21d9d8d04471271d ]

HSDK board has Micrel KSZ9031, recent commit
bcf3440c6dd ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
caused a breakdown of Ethernet.
Using 'phy-mode = "rgmii"' is not correct because accodring RGMII
specification it is necessary to have delay on RX (PHY to MAX)
which is not generated in case of "rgmii".
Using "rgmii-id" adds necessary delay and solves the issue.

Also adding name of PHY placed on HSDK board.

Signed-off-by: default avatarEvgeniy Didin <Evgeniy.Didin@synopsys.com>
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 4023bad0

arch/arc/boot/dts/hsdk.dts

+2 −2
Original line number Diff line number Diff line
@@ -175,7 +175,7 @@ 
			reg = <0x8000 0x2000>;

			interrupts = <10>;

			interrupt-names = "macirq";

			phy-mode = "rgmii";

			phy-mode = "rgmii-id";

			snps,pbl = <32>;

			snps,multicast-filter-bins = <256>;

			clocks = <&gmacclk>;
@@ -193,7 +193,7 @@ 
				#address-cells = <1>;

				#size-cells = <0>;

				compatible = "snps,dwmac-mdio";

				phy0: ethernet-phy@0 {

				phy0: ethernet-phy@0 { /* Micrel KSZ9031 */

					reg = <0>;

					ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;

					ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;