Problem running NXP TJA1100 with IMX6

mdmosaddekhossa — Wed, 14 Feb 2018 13:11:53 GMT

I have setup my device tree according to the specification of NXP TJA1100.

       pinctrl_enet: enetgrp { /* Ethernet MII */
           fsl,pins = <
               MX6QDL_PAD_ENET_CRS_DV__ENET_RX_EN         0x000130B0
               MX6QDL_PAD_ENET_RX_ER__ENET_RX_ER          0x000130B0
               MX6QDL_PAD_KEY_COL0__ENET_RX_DATA3         0x000130B0
               MX6QDL_PAD_KEY_COL2__ENET_RX_DATA2         0x0001B0B0
               MX6QDL_PAD_ENET_RXD0__ENET_RX_DATA0        0x000130B0
               MX6QDL_PAD_ENET_RXD1__ENET_RX_DATA1        0x0001B0B0
               MX6QDL_PAD_ENET_MDC__ENET_MDC              0x000130B0
               MX6QDL_PAD_ENET_MDIO__ENET_MDIO            0x0001B0B0
               MX6QDL_PAD_ENET_TXD0__ENET_TX_DATA0        0x000130B0
               MX6QDL_PAD_ENET_TXD1__ENET_TX_DATA1        0x0001B0B0
               MX6QDL_PAD_ENET_TX_EN__ENET_TX_EN          0x000130B0
               MX6QDL_PAD_KEY_ROW0__ENET_TX_DATA3         0x000130B0
               MX6QDL_PAD_KEY_ROW2__ENET_TX_DATA2         0x000130B0
               MX6QDL_PAD_GPIO_18__ENET_RX_CLK            0x0001B0B0
               MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK       0x0001B0B0
               MX6QDL_PAD_KEY_COL4__GPIO4_IO14            0x000130B0
           >;
       };

/*Ethernet*/
&fec{
   pinctrl-names = "default";
   pinctrl-0 = <&pinctrl_enet>;
   phy-mode = "mii";
    phy-handle = <&ethphy>;
   phy-reset-gpios = <&gpio4 14 1>; //todo
   status = "okay";
   mdio {
        ethphy: ethernet-phy@06{
            compatible = "0x0180dc48";
            device_type = "ethernet-phy";
            reg = <0>;
        };
    };
};

First problem is it does not recognize other registers but only 0. When zero is assigned then it shows an error.

Error message: "fec 2188000.ethernet eth0: MDIO read timeout" and "TJA1100 2188000.ethernet:06: read error: did_interrupt failed"

Their is an link up error. It will be really helpful for any suggestion as I am stuck with this problem for 3 weeks. I cannot find any solution.

Re: Problem running NXP TJA1100 with IMX6

igorpadykov — Tue, 20 Feb 2018 07:37:35 GMT

Hi MD Mosaddek Hossain

one can look at linux/drivers/net/phy/nxp

linux.git - Automotive Linux Tree

Best regards
igor
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Re: Problem running NXP TJA1100 with IMX6

mdmosaddekhossa — Thu, 22 Feb 2018 08:12:31 GMT

I have already created a patch for this driver and I am running the driver according to the specification. But it does not recognize the phy address.

topic Re: Problem running NXP TJA1100 with IMX6 in i.MX Processors

Problem running NXP TJA1100 with IMX6

Re: Problem running NXP TJA1100 with IMX6

Re: Problem running NXP TJA1100 with IMX6