Commit 52349a2a authored by Grygorii Strashko's avatar Grygorii Strashko Committed by Tony Lindgren

ARM: dts: am57xx-beagle-x15: implement errata "Ethernet RGMII2 Limited to 10/100 Mbps"

According to errata i880 description the speed of Ethernet port 1 on AM572x
SoCs rev 1.1 should be limited to 10/100Mbps, because RGMII2 Switching
Characteristics are not compatible with 1000 Mbps operation [1].
The issue is fixed with Rev 2.0 silicon.

Hence, rework Beagle-X15 and Begale-X15-revb1 to use phy-handle instead of
phy_id and apply corresponding limitation to the Ethernet Phy 1.

[1] http://www.ti.com/lit/er/sprz429j/sprz429j.pdfSigned-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent c554a6d8
...@@ -421,19 +421,29 @@ &uart3 { ...@@ -421,19 +421,29 @@ &uart3 {
<&dra7_pmx_core 0x3f8>; <&dra7_pmx_core 0x3f8>;
}; };
&davinci_mdio {
phy0: ethernet-phy@1 {
reg = <1>;
};
phy1: ethernet-phy@2 {
reg = <2>;
};
};
&mac { &mac {
status = "okay"; status = "okay";
dual_emac; dual_emac;
}; };
&cpsw_emac0 { &cpsw_emac0 {
phy_id = <&davinci_mdio>, <1>; phy-handle = <&phy0>;
phy-mode = "rgmii"; phy-mode = "rgmii";
dual_emac_res_vlan = <1>; dual_emac_res_vlan = <1>;
}; };
&cpsw_emac1 { &cpsw_emac1 {
phy_id = <&davinci_mdio>, <2>; phy-handle = <&phy1>;
phy-mode = "rgmii"; phy-mode = "rgmii";
dual_emac_res_vlan = <2>; dual_emac_res_vlan = <2>;
}; };
......
...@@ -22,3 +22,8 @@ &mmc1 { ...@@ -22,3 +22,8 @@ &mmc1 {
vmmc-supply = <&vdd_3v3>; vmmc-supply = <&vdd_3v3>;
vmmc-aux-supply = <&ldo1_reg>; vmmc-aux-supply = <&ldo1_reg>;
}; };
/* errata i880 "Ethernet RGMII2 Limited to 10/100 Mbps" */
&phy1 {
max-speed = <100>;
};
...@@ -22,3 +22,8 @@ &tpd12s015 { ...@@ -22,3 +22,8 @@ &tpd12s015 {
&mmc1 { &mmc1 {
vmmc-supply = <&ldo1_reg>; vmmc-supply = <&ldo1_reg>;
}; };
/* errata i880 "Ethernet RGMII2 Limited to 10/100 Mbps" */
&phy1 {
max-speed = <100>;
};
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