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AM68: sysconfig ethernet config

Tony Tang
Mastermind 30542 points

Part Number: AM68
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

There are several conflicts after adding CPSW2G or/and MCU_cpsw2g, And there is not optional Use Case for pin assignment. 

How to configure it in right way?

  • 0
    TI__Guru* 89341 points

    Hi,

    The assigned expert is out of office. Please expect a response by end of this week

    Regards,

    Nikhil

  • 0 in reply to Nikhil Dasan
    TI__Mastermind 43220 points

    Hi,

    Not all of the pins of the CPSW are required. Some are only required for RMII others for only RGMII. Based on your use case, you can see the device-tree to see which pins are used in the EVM design

    For MCU CPSW2G, Evm only uses the following pins:

    J721S2_WKUP_IOPAD(0x02c, PIN_INPUT, 0) /* (B22) MCU_RGMII1_RD0 */
    J721S2_WKUP_IOPAD(0x028, PIN_INPUT, 0) /* (B21) MCU_RGMII1_RD1 */
    J721S2_WKUP_IOPAD(0x024, PIN_INPUT, 0) /* (C22) MCU_RGMII1_RD2 */
    J721S2_WKUP_IOPAD(0x020, PIN_INPUT, 0) /* (D23) MCU_RGMII1_RD3 */
    J721S2_WKUP_IOPAD(0x01c, PIN_INPUT, 0) /* (D22) MCU_RGMII1_RXC */
    J721S2_WKUP_IOPAD(0x004, PIN_INPUT, 0) /* (E23) MCU_RGMII1_RX_CTL */
    J721S2_WKUP_IOPAD(0x014, PIN_OUTPUT, 0) /* (F23) MCU_RGMII1_TD0 */
    J721S2_WKUP_IOPAD(0x010, PIN_OUTPUT, 0) /* (G22) MCU_RGMII1_TD1 */
    J721S2_WKUP_IOPAD(0x00c, PIN_OUTPUT, 0) /* (E21) MCU_RGMII1_TD2 */
    J721S2_WKUP_IOPAD(0x008, PIN_OUTPUT, 0) /* (E22) MCU_RGMII1_TD3 */
    J721S2_WKUP_IOPAD(0x018, PIN_OUTPUT, 0) /* (F21) MCU_RGMII1_TXC */
    J721S2_WKUP_IOPAD(0x000, PIN_OUTPUT, 0) /* (F22) MCU_RGMII1_TX_CTL */

    For Main CPSW, they are:

    J721S2_IOPAD(0x0b8, PIN_INPUT, 6) /* (AA24) MCASP1_ACLKX.RGMII1_RD0 */
    J721S2_IOPAD(0x0a0, PIN_INPUT, 6) /* (AB25) MCASP0_AXR12.RGMII1_RD1 */
    J721S2_IOPAD(0x0a4, PIN_INPUT, 6) /* (T23) MCASP0_AXR13.RGMII1_RD2 */
    J721S2_IOPAD(0x0a8, PIN_INPUT, 6) /* (U24) MCASP0_AXR14.RGMII1_RD3 */
    J721S2_IOPAD(0x0b0, PIN_INPUT, 6) /* (AD26) MCASP1_AXR3.RGMII1_RXC */
    J721S2_IOPAD(0x0ac, PIN_INPUT, 6) /* (AC25) MCASP0_AXR15.RGMII1_RX_CTL */
    J721S2_IOPAD(0x08c, PIN_OUTPUT, 6) /* (T25) MCASP0_AXR7.RGMII1_TD0 */
    J721S2_IOPAD(0x090, PIN_OUTPUT, 6) /* (W24) MCASP0_AXR8.RGMII1_TD1 */
    J721S2_IOPAD(0x094, PIN_OUTPUT, 6) /* (AA25) MCASP0_AXR9.RGMII1_TD2 */
    J721S2_IOPAD(0x098, PIN_OUTPUT, 6) /* (V25) MCASP0_AXR10.RGMII1_TD3 */
    J721S2_IOPAD(0x0b4, PIN_OUTPUT, 6) /* (U25) MCASP1_AXR4.RGMII1_TXC */
    J721S2_IOPAD(0x09c, PIN_OUTPUT, 6) /* (T24) MCASP0_AXR11.RGMII1_TX_CTL */

    For RGMII, only use the signals with RGMII in the bracket and for RMII, use others.

    Regards,
    Tanmay

  • 0 in reply to Tanmay Patil
    TI__Mastermind 30542 points

    Hi Tanmay,

    Should it have two options for different use case of RMII and RGMII in the tool like other devices have?

  • 0 in reply to Tony Tang
    TI__Mastermind 43220 points

    Hi Tony,

    Correct. I will pass this on to the sysconfig team. But right now it seems to be not present.

    Regards,
    Tanmay