sdio - ocr confusions

sdio - ocr confusions

[Maximus]

Hi,
  im trying to develop and sdio driver modifying the existing SD card driver.
  Im using an OMAP processor and a Wifi SDIO Card.

  I have send CMD 5 to get the OCR.

  i do get the EOC Status bit set.

  I do get the response resp[0] => 0x10fff000   (Contents of RSP6 & RSP7)


  According to this -> ocr => 0xfff000 (right most 24 bits)
                                mem present => 0
                                No of IO functions => 1

  I am using a Wifi SDIO Card - am not sure if these values are correct?.

  Am i doing something wrong here?


  I understand from the SDIO specs that only one of the bits (0-24) must be set.

  How do u interpreset an ocr of 0xfff000 ?.



  #define MMC_RSP_R4  (MMC_RSP_SHORT|MMC_RSP_CRC)
  #define SDIO_IO_SEND_OP_COND   (5)

    cmd.opcode = SDIO_IO_SEND_OP_COND ;
    cmd.arg = 0;
    cards.flags = MMC_RSP_R4

  Is this wrong?


Regards,
Jo

MMC1: set_ios: clock 0Hz busmode 1 powermode 0 Vdd 0.00
MMC1: set_ios: clock 0Hz busmode 1 powermode 0 Vdd 0.00
MMC1: set_ios: clock 400000Hz busmode 1 powermode 1 Vdd 0.21
MMC1: set_ios: clock 400000Hz busmode 1 powermode 1 Vdd 0.21
MMC1: set_ios: clock 400000Hz busmode 1 powermode 2 Vdd 0.21
MMC1: set_ios: clock 400000Hz busmode 1 powermode 2 Vdd 0.21

MMC: starting cmd 05 arg 00000000 flags 00000009
MMC1: CMD5, argument 0x00000000, 32-bit response, CRC
MMC IRQ 0001 (CMD 5): EOC
MMC1: Response 10fff000
MMC1: End request, err 0
MMC: req done (05): 0: 10fff000 00000000 00000000 00000000
  MC1: set_ios: clock 0Hz busmode 1 powermode 0 Vdd 0.00
MMC1: set_ios: clock 0Hz busmode 1 powermode 0 Vdd 0.00

Re: sdio - ocr confusions

[Marcel Holtmann]

Hi John,

>   im trying to develop and sdio driver modifying the existing SD card driver.
>   Im using an OMAP processor and a Wifi SDIO Card.

I am trying to get SDIO working with the SDHCI driver, but so far with
no success at all. Did you modify the OMAP driver or the mmc_core to add
support for SDIO. From my understanding no changes to any of the drivers
should be necessary.

Regards

Marcel