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-rw-r--r--dts/src/arm64/rockchip/rk3328-rock64.dts2
1 files changed, 2 insertions, 0 deletions
diff --git a/dts/src/arm64/rockchip/rk3328-rock64.dts b/dts/src/arm64/rockchip/rk3328-rock64.dts
index d4f80786e7..3890468678 100644
--- a/dts/src/arm64/rockchip/rk3328-rock64.dts
+++ b/dts/src/arm64/rockchip/rk3328-rock64.dts
@@ -132,6 +132,8 @@
assigned-clocks = <&cru SCLK_MAC2IO>, <&cru SCLK_MAC2IO_EXT>;
assigned-clock-parents = <&gmac_clkin>, <&gmac_clkin>;
clock_in_out = "input";
+ /* shows instability at 1GBit right now */
+ max-speed = <100>;
phy-supply = <&vcc_io>;
phy-mode = "rgmii";
pinctrl-names = "default";