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