From: Evgeniy Didin <evgeniy.di...@synopsys.com>
[ 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.di...@synopsys.com>
Cc: Eugeniy Paltsev <eugeniy.palt...@synopsys.com>
Cc: Alexey Brodkin <abrod...@synopsys.com>
Signed-off-by: Vineet Gupta <vgu...@synopsys.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
arch/arc/boot/dts/hsdk.dts | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index 5d64a5a940ee6..dcaa44e408ace 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -210,7 +210,7 @@ gmac: ethernet@8000 {
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 @@ mdio {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
- phy0: ethernet-phy@0 {
+ phy0: ethernet-phy@0 { /* Micrel KSZ9031 */
reg = <0>;
};
};
--
2.25.1
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