arm64: dts: rockchip: fix rk3328-roc-cc gmac2io stability issues

This patch is a port of the fix from
commit 73e42e186699 ("arm64: dts: rockchip: fix rock64 gmac2io stability
issues")

As per that patch, enabling thresh dma mode force disables checksuming.
This is necessary as tx checksuming does not work with packets larger
than 1498.

The rk3328-roc-cc board exhibits tx stability issues with large packets
similar to rock64's issues. This patch resolves that issue.

Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
index 99d0d9912950bf6d33fecd4519c98eadc8e89e35..33c44e857247e4a64847f22945c4c06bb7735ecf 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
@@ -104,6 +104,7 @@
        phy-mode = "rgmii";
        pinctrl-names = "default";
        pinctrl-0 = <&rgmiim1_pins>;
+       snps,force_thresh_dma_mode;
        snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
        snps,reset-active-low;
        snps,reset-delays-us = <0 10000 50000>;