MMC THGBM4G4D1HBAIR on IMX53

[cristiansicilia]

Hello *,

I have an IMX53 with an MMC THGBM4G4D1HBAIR, but seems that linux can't read the Card ID.

The Layout

The MMC_RST and MMC_CMD are connected on PATA_IORDY and NPATA_RESET_B respectivelly.

In my board code have:

// IOMUX MMC
MX53_PAD_PATA_DATA8__ESDHC3_DAT0,
MX53_PAD_PATA_DATA9__ESDHC3_DAT1,
MX53_PAD_PATA_DATA10__ESDHC3_DAT2,
MX53_PAD_PATA_DATA11__ESDHC3_DAT3,
MX53_PAD_PATA_DATA0__ESDHC3_DAT4,
MX53_PAD_PATA_DATA1__ESDHC3_DAT5,
MX53_PAD_PATA_DATA2__ESDHC3_DAT6,
MX53_PAD_PATA_DATA3__ESDHC3_DAT7,
MX53_PAD_PATA_IORDY__ESDHC3_CLK,
MX53_PAD_PATA_RESET_B__ESDHC3_CMD,
MX53_PAD_PATA_DA_0__ESDHC3_RST,

static struct mxc_mmc_platform_data mmc3_data = {
  .ocr_mask = MMC_VDD_31_32,
  .caps = MMC_CAP_NONREMOVABLE | MMC_CAP_8_BIT_DATA | MMC_CAP_DATA_DDR,
  .min_clk = 400000,
  .max_clk = 50000000,
  .card_fixed = 1,
  .card_inserted_state = 0, 
  .clock_mmc = "esdhc_clk",
  .power_mmc = NULL,
};

  mxc_register_device(&mxc_iim_device, &iim_data);
  //mxc_register_device(&mxc_pwm2_device, NULL);
  mxc_register_device(&mxcsdhc1_device, &mmc1_data); // SDCARD this work good
  mxc_register_device(&mxcsdhc3_device, &mmc3_data); // MMC not work
  mxc_register_device(&mxc_ssi1_device, NULL); 
  mxc_register_device(&mxc_ssi2_device, NULL);    //

The kernel log oututp with MMC debug enabled say:

Jan  2 00:25:19 nsip user.warn kernel: .
Jan  2 00:25:19 nsip user.debug kernel: mmc1: starting CMD2 arg 00000000 flags 00000067
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: sdhci_send_command 0x2 is starting...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: Complete sending cmd, transfer mode would be 0x2090000.
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00010001
Jan  2 00:25:19 nsip user.debug kernel: mmc1: req failed (CMD2): -110, retrying...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: sdhci_send_command 0x2 is starting...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: Complete sending cmd, transfer mode would be 0x2090000.
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00010001
Jan  2 00:25:19 nsip user.debug kernel: mmc1: req failed (CMD2): -110, retrying...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: sdhci_send_command 0x2 is starting...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: Complete sending cmd, transfer mode would be 0x2090000.
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00010001
Jan  2 00:25:19 nsip user.debug kernel: mmc1: req failed (CMD2): -110, retrying...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: sdhci_send_command 0x2 is starting...
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_send_command()]: Complete sending cmd, transfer mode would be 0x2090000.
Jan  2 00:25:19 nsip user.debug kernel: mxsdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00010001
Jan  2 00:25:19 nsip user.debug kernel: mmc1: req done (CMD2): -110: 00000000 00000000 00000000 00000000

Seems that the function mmc_all_send_cid fail for timeout (err -110).

Any Idea?

[cristiansicilia]

Hello Igorpaykov,

thank's for reply.

The iomux settings:

1. // IOMUX MMC 
2. MX53_PAD_PATA_DATA8__ESDHC3_DAT0, 
3. MX53_PAD_PATA_DATA9__ESDHC3_DAT1, 
4. MX53_PAD_PATA_DATA10__ESDHC3_DAT2, 
5. MX53_PAD_PATA_DATA11__ESDHC3_DAT3, 
6. MX53_PAD_PATA_DATA0__ESDHC3_DAT4, 
7. MX53_PAD_PATA_DATA1__ESDHC3_DAT5, 
8. MX53_PAD_PATA_DATA2__ESDHC3_DAT6, 
9. MX53_PAD_PATA_DATA3__ESDHC3_DAT7, 
10. MX53_PAD_PATA_IORDY__ESDHC3_CLK, 
11. MX53_PAD_PATA_RESET_B__ESDHC3_CMD, 
12. MX53_PAD_PATA_DA_0__ESDHC3_RST, 

was not call, so I simply don't apply this settings (as your indication).

Really thank's for your suggestion!!

[igorpadykov · Accepted solution]

Hi Cristian

had you set SION bit for mmc pad iomux settings ?

One can try to test mmc signals with oscilloscope using simple OBDS

mmc_test.c (read mmc ID)

On-Board Diagnostic Suit for the i.MX53 Quick Start Board

Best regards

igor

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