From 52349a2abff1a675ac51077e7bfc60054872245d Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Thu, 12 Jan 2017 11:14:29 -0600 Subject: 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 Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts') diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts index ca85570629fd..39a92aff0a0d 100644 --- 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>; +}; -- cgit v1.2.3-59-g8ed1b