Dear Support Team,
We are testing external RGMII interface on Apalis iMX8 V1.1B with latest 5.0 Ycoto Linux BSP 5.0.0+build.3(20201006), and found that when enable fec2 in device tree, the eth0 and eth1 assignment will exchange to eth0 for external RGMII interface and eth1 for internal on-board network, then this lead to both ports can’t connect to corresponding PHY chips, could you help check on this? and please find detailed device tree modification and dmesg log as below.
BTW, Also tested with Ycoto Linux multimedia image 202009 build 2 monthly release, the issue is same.
./ device tree modifcation
diff --git a/arch/arm64/boot/dts/freescale/imx8qm-apalis-eval.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-apalis-eval.dtsi
index 1f0de824031c..ffa90243f635 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-apalis-eval.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-apalis-eval.dtsi
@@ -179,6 +179,10 @@
status = "okay";
};
+&fec2 {
+ status = "okay";
+};
+
&flexcan1 {
status = "okay";
};
diff --git a/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi
index 08bd086463db..09e05dbdf6cb 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-apalis-v1.1.dtsi
@@ -338,6 +338,27 @@
};
};
+/* External RGMII interface PHY */
+&fec2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_fec2>;
+ fsl,magic-packet;
+ fsl,rgmii_txc_dly;
+ //local-mac-address = [00 14 2D 76 D1 CA];
+ phy-handle = <ðphy1>;
+ phy-mode = "rgmii-rxid";
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethphy1: ethernet-phy@1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ };
+ };
+};
+
/* Apalis CAN1 */
&flexcan1 {
/* define the following property to disable CAN-FD mode */
@@ -436,7 +457,7 @@
&iomuxc {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_cam1_gpios>, <&pinctrl_dap1_gpios>,
- <&pinctrl_esai0_gpios>, <&pinctrl_fec2_gpios>,
+ <&pinctrl_esai0_gpios>,
<&pinctrl_gpio3>, <&pinctrl_gpio4>,
<&pinctrl_gpio_usbh_oc_n>, <&pinctrl_lpuart1ctrl>,
<&pinctrl_lvds0_i2c0_gpio>, <&pinctrl_lvds1_i2c0_gpios>,
@@ -966,8 +987,6 @@
fsl,pins = <
IMX8QM_LVDS1_I2C1_SCL_DMA_UART3_TX 0x06000020
IMX8QM_LVDS1_I2C1_SDA_DMA_UART3_RX 0x06000020
- IMX8QM_ENET1_RGMII_TXD3_DMA_UART3_RTS_B 0x06000020
- IMX8QM_ENET1_RGMII_RXC_DMA_UART3_CTS_B 0x06000020
>;
};
@@ -1119,6 +1138,27 @@
>;
};
+ pinctrl_fec2: fec2grp {
+ fsl,pins = <
+ IMX8QM_COMP_CTL_GPIO_1V8_3V3_ENET_ENETA_PAD 0x000014a0
+ IMX8QM_ENET1_MDC_CONN_ENET1_MDC 0x06000020
+ IMX8QM_ENET1_MDIO_CONN_ENET1_MDIO 0x06000020
+ IMX8QM_ENET1_REFCLK_125M_25M_CONN_ENET1_REFCLK_125M_25M 0x06000020
+ IMX8QM_ENET1_RGMII_TX_CTL_CONN_ENET1_RGMII_TX_CTL 0x06000020
+ IMX8QM_ENET1_RGMII_TXC_CONN_ENET1_RGMII_TXC 0x06000020
+ IMX8QM_ENET1_RGMII_TXD0_CONN_ENET1_RGMII_TXD0 0x06000020
+ IMX8QM_ENET1_RGMII_TXD1_CONN_ENET1_RGMII_TXD1 0x06000020
+ IMX8QM_ENET1_RGMII_TXD2_CONN_ENET1_RGMII_TXD2 0x06000020
+ IMX8QM_ENET1_RGMII_TXD3_CONN_ENET1_RGMII_TXD3 0x06000020
+ IMX8QM_ENET1_RGMII_RXC_CONN_ENET1_RGMII_RXC 0x06000020
+ IMX8QM_ENET1_RGMII_RX_CTL_CONN_ENET1_RGMII_RX_CTL 0x06000020
+ IMX8QM_ENET1_RGMII_RXD0_CONN_ENET1_RGMII_RXD0 0x06000020
+ IMX8QM_ENET1_RGMII_RXD1_CONN_ENET1_RGMII_RXD1 0x06000020
+ IMX8QM_ENET1_RGMII_RXD2_CONN_ENET1_RGMII_RXD2 0x06000020
+ IMX8QM_ENET1_RGMII_RXD3_CONN_ENET1_RGMII_RXD3 0x06000020
+ >;
+ };
+
/* On-module HDMI_CTRL */
pinctrl_hdmi_ctrl: hdmictrlgrp {
fsl,pins = <
Then after compiling and deploying the modified device tree file “imx8qm-apalis-v1.1-eval.dtb” to module, both interface eth0 and eth1 don’t work, dmesg as below:
root@apalis-imx8:~# dmesg |grep eth
[ 0.000000] psci: probing for conduit method from DT.
[ 1.879075] fec 5b040000.ethernet: Adding to iommu group 1
[ 1.886019] fec 5b050000.ethernet: Adding to iommu group 1
[ 1.896469] fec 5b050000.ethernet: Invalid MAC address: 00:00:00:00:00:00
[ 1.903280] fec 5b050000.ethernet: Using random MAC address: 56:48:36:68:ca:17
[ 1.915585] mdio_bus 5b050000.ethernet-1: MDIO device at address 1 is missing.
[ 1.923130] fec 5b050000.ethernet eth0: registered PHC device 0
[ 2.934182] fec 5b040000.ethernet eth1: registered PHC device 1
[ 6.960929] using random self ethernet address
[ 6.966404] using random host ethernet address
[ 7.441776] fec 5b050000.ethernet eth0: Unable to connect to phy
[ 7.464425] fec 5b040000.ethernet eth1: Unable to connect to phy
And if disable any one inferface (fec1 or fec2) in device tree, then the other one works well. Also tried boddle mac address to both fec interface in device tree with “local-mac-address” parameter, but doesn’t work.
Thanks and Best Regards
Simon