iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARC: [plat-hsdk]: Switch ethernet phy-mode to rgmii-id

Browse Source 
[ 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: Evgeniy Didin <Evgeniy.Didin@synopsys.com>
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Evgeniy Didin 2020-07-07 18:38:58 +03:00 committed by Greg Kroah-Hartman
parent 82d4cfa185
commit b011e41a8e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arc/boot/dts/hsdk.dts
View File

@ -210,7 +210,7 @@
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>;
@ -228,7 +228,7 @@
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
phy0: ethernet-phy@0 {
phy0: ethernet-phy@0 { /* Micrel KSZ9031 */
reg = <0>;
};
};