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authorGrygorii Strashko <grygorii.strashko@ti.com>2017-01-12 18:14:29 +0100
committerTony Lindgren <tony@atomide.com>2017-01-12 23:52:54 +0100
commit52349a2abff1a675ac51077e7bfc60054872245d (patch)
treef0541859af0a838565046d1ea847ea28eef666eb /arch/arm/boot/dts/am57xx-beagle-x15.dts
parentARM: dts: am335x-phycore-som: Remove partition tables (diff)
downloadlinux-52349a2abff1a675ac51077e7bfc60054872245d.tar.xz
linux-52349a2abff1a675ac51077e7bfc60054872245d.zip
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>
Diffstat (limited to 'arch/arm/boot/dts/am57xx-beagle-x15.dts')
-rw-r--r--arch/arm/boot/dts/am57xx-beagle-x15.dts5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/am57xx-beagle-x15.dts b/arch/arm/boot/dts/am57xx-beagle-x15.dts
index 8c66f2efd283..19a60a11c198 100644
--- 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>;
+};