So I discovered the cause of my TX issues, at least on my
rk3328-roc-cc.
The rk3328.dtsi is missing several rgmii tx pull strength values.
This is causing them to default to 0ma.
I've pushed them to 12ma, same as the other tx values, and I'm
getting 600 mbps tx, with no TX failures.
I am also going to test his adaptive patch once it's done building.
Thoughts?
diff --git a/arch/arm65/boot/dts/rockchip/rk3328-roc-cc.dts
b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
index c0519bc5884e..696627bf3331 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
@@ -280,6 +280,26 @@
rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
+
+ gmac-1 {
+ rgmiim1_pins: rgmiim1-pins {
+ rockchip,pins =
+ /* mac_txclk */
+ <0 RK_PB0 1 &pcfg_pull_none_12ma>,
+ /* mac_txen */
+ <0 RK_PB4 1 &pcfg_pull_none_12ma>,
+ /* mac_clk */
+ <0 RK_PD0 1 &pcfg_pull_none_12ma>,
+ /* mac_txd1 */
+ <0 RK_PC0 1 &pcfg_pull_none_12ma>,
+ /* mac_txd0 */
+ <0 RK_PC1 1 &pcfg_pull_none_12ma>,
+ /* mac_txd3 */
+ <0 RK_PC7 1 &pcfg_pull_none_12ma>,
+ /* mac_txd2 */
+ <0 RK_PC6 1 &pcfg_pull_none_12ma>;
+ };
+ };
};
&sdmmc {
Good find! It seems like they're there in the dtsi, but configured as
none when it comes to ma. I'll test it
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