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AM335X 在使用SD卡烧写emmc时，uboot已经从SD卡启动，怎么显示Card did not respond to voltage select!，导致无法正常烧写emmc，这是哪里出了问题

user6350786
Prodigy 230 points

U-Boot SPL 2019.01-g1ebdbc7-dirty (Jun 15 2020 - 23:30:29 +0800)
Trying to boot from MMC1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

Loading Environment from MMC... Card did not respond to voltage select!
*** Warning - No block device, using default environment

U-Boot 2019.01-g1ebdbc7-dirty (Jun 15 2020 - 23:30:29 +0800)

CPU : AM335X-GP rev 2.1
Model: TI AM335x BeagleBone Black
DRAM: 512 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

Loading Environment from MMC... Card did not respond to voltage select!
*** Warning - No block device, using default environment

<ethaddr> not set. Validating first E-fuse MAC
Net: Could not get PHY for ethernet@4a100000: addr 0
eth0: ethernet@4a100000
Warning: usb_ether MAC addresses don't match:
Address in ROM is de:ad:be:ef:00:01
Address in environment is 4c:3f:d3:cb:f2:55
, eth1: usb_ether
Press SPACE to abort autoboot in 2 seconds
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
4244032 bytes read in 360 ms (11.2 MiB/s)
49049 bytes read in 7 ms (6.7 MiB/s)
Card did not respond to voltage select!
Card did not respond to voltage select!
SD/MMC found on device 1
Card did not respond to voltage select!
Card did not respond to voltage select!
## Error: "bootcmd_nand0" not defined
starting USB...
USB0: Port not available.
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC de:ad:be:ef:00:01
HOST MAC de:ad:be:ef:00:00
RNDIS ready
The remote end did not respond in time.missing environment variable: pxeuuid
Retrieving file: pxelinux.cfg/01-4c-3f-d3-cb-f2-53

Warning: usb_ether MAC addresses don't match:
Address in ROM is de:ad:be:ef:00:01
Address in environment is 4c:3f:d3:cb:f2:55
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC de:ad:be:ef:00:01
HOST MAC de:ad:be:ef:00:00
RNDIS ready
The remote end did not respond in time.Retrieving file: pxelinux.cfg/00000000

Warning: usb_ether MAC addresses don't match:
Address in ROM is de:ad:be:ef:00:01
Address in environment is 4c:3f:d3:cb:f2:55
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC de:ad:be:ef:00:01
HOST MAC de:ad:be:ef:00:00
RNDIS ready

U-Boot SPL 2019.01-g1ebdbc7-dirty (Jun 15 2020 - 23:30:29 +0800)
Trying to boot from MMC1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

Loading Environment from MMC... Card did not respond to voltage select!
*** Warning - No block device, using default environment

U-Boot 2019.01-g1ebdbc7-dirty (Jun 15 2020 - 23:30:29 +0800)

CPU : AM335X-GP rev 2.1
Model: TI AM335x BeagleBone Black
DRAM: 512 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from FAT... *** Warning - bad CRC, using default environment

Loading Environment from MMC... Card did not respond to voltage select!
*** Warning - No block device, using default environment

<ethaddr> not set. Validating first E-fuse MAC
Net: Could not get PHY for ethernet@4a100000: addr 0
eth0: ethernet@4a100000
Warning: usb_ether MAC addresses don't match:
Address in ROM is de:ad:be:ef:00:01
Address in environment is 4c:3f:d3:cb:f2:55
, eth1: usb_ether
Press SPACE to abort autoboot in 2 seconds
=>
=>
=>
=> mmc info
Device: OMAP SD/MMC
Manufacturer ID: 12
OEM: 3456
Name: SDBus Speed: 48000000
Mode : SD High Speed (50MHz)
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 14.6 GiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
=>

  • 0
    TI__Guru** 110395 points
    是自制板吗？是参考的哪块开发板设计的？mmc0的硬件连接部分对照开发板检查一下。
    参考以下帖子，电源部分有没有问题。
    e2e.ti.com/.../765665
  • 0 回复 Nancy Wang
    Prodigy 230 points


    mmc2_pins_default: pinmux_mmc2_pins {
    pinctrl-single,pins = <
    0x000 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
    0x004 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
    0x008 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
    0x00c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
    0x010 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
    0x014 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
    0x018 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
    0x01c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
    >;
    };

    mmc2_pins_sleep: pinmux_mmc2_pins_sleep {
    pinctrl-single,pins = <
    0x000 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
    0x004 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
    0x008 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
    0x00c (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
    0x010 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
    0x014 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
    0x018 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
    0x01c (PIN_INPUT_PULLDOWN | MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */
    >;
    };

    emmc_pins: pinmux_emmc_pins {
    pinctrl-single,pins = <
    0x80 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn1.mmc1_clk */
    0x84 (PIN_INPUT_PULLUP | MUX_MODE2) /* gpmc_csn2.mmc1_cmd */
    0x00 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad0.mmc1_dat0 */
    0x04 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad1.mmc1_dat1 */
    0x08 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad2.mmc1_dat2 */
    0x0c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad3.mmc1_dat3 */
    0x10 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad4.mmc1_dat4 */
    0x14 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad5.mmc1_dat5 */
    0x18 (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad6.mmc1_dat6 */
    0x1c (PIN_INPUT_PULLUP | MUX_MODE1) /* gpmc_ad7.mmc1_dat7 */

    &mmc2 {
    vmmc-supply = <&vmmcsd_fixed>;
    pinctrl-names = "default", "sleep";
    pinctrl-0 = <&emmc_pins>;
    pinctrl-1 = <&mmc2_pins_sleep>;
    pinctrl-2 = <&mmc2_pins_default>;
    bus-width = <8>;
    status = "okay";
    };

    &mmc1 {
    status = "okay";
    vmmc-supply = <&vmmcsd_fixed>;
    bus-width = <0x4>;
    pinctrl-names = "default";
    pinctrl-0 = <&mmc1_pins>;
    cd-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;

    我的EMMC硬件如图，mmc2的配置如上，为什么emmc还是显示Card did not respond to voltage select