Linux/AM3354: Linux / AM3354: No receive on eth1

Part Number:AM3354

Tool/software: Linux

Hi,

we have a design with AM3354 and two TLK110 PHYs. eth0 is working fine. eth1 tx path is also fine, but no rx at all.

We are using TI SDK 04.01 with linux kernel 4.14.12.

	cpsw_default: cpsw_default {
		pinctrl-single,pins = <
			/* Slave 1, RMII mode */
			0x10c ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (H17) gmii1_crs.rmii1_crs_dv */
			0x110 ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (J15) gmii1_rxer.rmii1_rxer */
			0x114 ( PIN_OUTPUT_PULLDOWN | MUX_MODE1 ) /* (J16) gmii1_txen.rmii1_txen */
			0x124 ( PIN_OUTPUT_PULLDOWN | MUX_MODE1 ) /* (K16) gmii1_txd1.rmii1_txd1 */
			0x128 ( PIN_OUTPUT_PULLDOWN | MUX_MODE1 ) /* (K17) gmii1_txd0.rmii1_txd0 */
			0x13c ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (L15) gmii1_rxd1.rmii1_rxd1 */
			0x140 ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (M16) gmii1_rxd0.rmii1_rxd0 */
			0x144 ( PIN_INPUT_PULLDOWN | MUX_MODE0 ) /* (H18) rmii1_refclk.rmii1_refclk */
			/* Slave 2, RMII mode */
			0x40 ( PIN_OUTPUT_PULLDOWN | MUX_MODE3 ) /* (R13) gpmc_a0.rmii2_txen */
			0x50 ( PIN_OUTPUT_PULLDOWN | MUX_MODE3 ) /* (R14) gpmc_a4.rmii2_txd1 */
			0x54 ( PIN_OUTPUT_PULLDOWN | MUX_MODE3 ) /* (V15) gpmc_a5.rmii2_txd0 */
			0x64 ( PIN_INPUT_PULLDOWN | MUX_MODE3 ) /* (U16) gpmc_a9.rmii2_crs_dv */
			0x68 ( PIN_INPUT_PULLDOWN | MUX_MODE3 ) /* (T16) gpmc_a10.rmii2_rxd1 */
			0x6c ( PIN_INPUT_PULLDOWN | MUX_MODE3 ) /* (V17) gpmc_a11.rmii2_rxd0 */
			0x74 ( PIN_INPUT_PULLDOWN | MUX_MODE3 ) /* (U17) gpmc_wpn.rmii2_rxer */
			0x108 ( PIN_INPUT_PULLDOWN | MUX_MODE1 ) /* (H16) gmii1_col.rmii2_refclk */
		>;
	};

&mac {
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&cpsw_default>;
	pinctrl-1 = <&cpsw_sleep>;
	status = "okay";
	dual_emac = <1>; 
};

&davinci_mdio {
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&mdio_default>;
	pinctrl-1 = <&mdio_sleep>;
	status = "okay";
};

&cpsw_emac0 {
	phy_id = <&davinci_mdio>, <0>;
	phy-mode = "rmii";
	dual_emac_res_vlan = <1>;
};

&cpsw_emac1 {
	phy_id = <&davinci_mdio>, <1>;
	phy-mode = "rmii";
	dual_emac_res_vlan = <2>;
};

&phy_sel {
	rmii-clock-ext;
};

Reading the related thread this looks pretty much like our problem, as we also use pin U16 for signal rmii2_crs_dv.

Like another user in this thread, i have no idea where i could find the function am33xx_select_rmii2_crs_dv() that solved the problem.

Can you give me a hint where to find this function or which steps are necessary to fix this issue, please?

Thank you and best regards,

Matt