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

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>

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
index 78bee26361f15847ccc0a950a61d201de9e3feb2..0429fa0822e085dd14a3daa270a7fe2b6fabe898 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
@@ -421,19 +421,29 @@
                              <&dra7_pmx_core 0x3f8>;
 };
 
+&davinci_mdio {
+       phy0: ethernet-phy@1 {
+               reg = <1>;
+       };
+
+       phy1: ethernet-phy@2 {
+               reg = <2>;
+       };
+};
+
 &mac {
        status = "okay";
        dual_emac;
 };
 
 &cpsw_emac0 {
-       phy_id = <&davinci_mdio>, <1>;
+       phy-handle = <&phy0>;
        phy-mode = "rgmii";
        dual_emac_res_vlan = <1>;
 };
 
 &cpsw_emac1 {
-       phy_id = <&davinci_mdio>, <2>;
+       phy-handle = <&phy1>;
        phy-mode = "rgmii";
        dual_emac_res_vlan = <2>;
 };

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
index ca85570629fd59db591da18c15b6c1a37ac8d007..39a92aff0a0dc5338d29c13949001e2558f17474 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
@@ -22,3 +22,8 @@
        vmmc-supply = <&vdd_3v3>;
        vmmc-aux-supply = <&ldo1_reg>;
 };
+
+/* errata i880 "Ethernet RGMII2 Limited to 10/100 Mbps" */
+&phy1 {
+       max-speed = <100>;
+};

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index 8c66f2efd283b2bcea47c5a219966303e838e915..19a60a11c19890d49f608e12c4a4c3a5d3c822bc 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15.dts
@@ -22,3 +22,8 @@
 &mmc1 {
        vmmc-supply = <&ldo1_reg>;
 };
+
+/* errata i880 "Ethernet RGMII2 Limited to 10/100 Mbps" */
+&phy1 {
+       max-speed = <100>;
+};