2 SDIO ports on IMX233

[kamejoko80]

Hello,

Is it possible to configure 2 SDIO ports at them same time on IMX233  ?

I need to use them for microSD and 88W8686 based SDIO card module.

IMX233 doesn't support SPI 16bit data mode, so I coudn't configure the libertas wifi driver by using GSPI interface.

Thanks and best regards.

[phuongdangminh]

OK,

After some time of modifing and testing, switching between sadness and happiness and pulling my hair out, I finally got my custome board work with two SDIO ports support.

Here is the job:

linux-2.6.35.3/arch/arm/mach-mx23/device.c

#if defined(CONFIG_MMC_MXS) || defined(CONFIG_MMC_MXS_MODULE)

#if !defined(CONFIG_SPI_MXS) && !defined(CONFIG_SPI_MXS_MODULE)

#if defined(CONFIG_MMC_ON_SSP1)

/* mmc0 platform data */

static struct mxs_mmc_platform_data mx23_mmc0_data = {

  .hw_init = mxs_mmc_hw_init_mmc0,

  .hw_release = mxs_mmc_hw_release_mmc0,

  .get_wp = mxs_mmc_get_wp_mmc0,

  .cmd_pullup = mxs_mmc_cmd_pullup_mmc0,

  /*

  Don't change ssp clock because ssp1 and ssp2 share one ssp clock source

  ssp module have own divider.

  .setclock = mxs_mmc_setclock_mmc0,

  */

  .caps = MMC_CAP_4_BIT_DATA,

  .min_clk = 400000,

  .max_clk = 48000000,

  .read_uA        = 50000,

  .write_uA       = 70000,

  .clock_mmc = "ssp.0",

  .power_mmc = NULL,

};

/* mmc0 resource */

static struct resource mx23_mmc0_resource[] = {

  {

  .flags = IORESOURCE_MEM,

  .start = SSP1_PHYS_ADDR,

  .end = SSP1_PHYS_ADDR + 0x2000 - 1,

  },

  {

  .flags = IORESOURCE_DMA,

  .start = MXS_DMA_CHANNEL_AHB_APBH_SSP1,

  .end = MXS_DMA_CHANNEL_AHB_APBH_SSP1,

  },

  {

  .flags = IORESOURCE_IRQ,

  .start = IRQ_SSP1_DMA,

  .end = IRQ_SSP1_DMA,

  },

  {

  .flags = IORESOURCE_IRQ,

  .start = IRQ_SSP_ERROR,

  .end = IRQ_SSP_ERROR,

  },

};

static void __init mx23_init_mmc0(void)

{

  struct platform_device *pdev;

  pdev = mxs_get_device("mxs-mmc", 0);

  if (pdev == NULL || IS_ERR(pdev)) {

  printk ("mxs-mmc0 get device failed\n");

  return;

    }

  pdev->resource = mx23_mmc0_resource;

  pdev->num_resources = ARRAY_SIZE(mx23_mmc0_resource);

  pdev->dev.platform_data = &mx23_mmc0_data;

  mxs_add_device(pdev, 2);

}

#else /* CONFIG_MMC_ON_SSP1*/

static void mx23_init_mmc0(void)

{

}

#endif /* CONFIG_MMC_ON_SSP1 */

#endif /* !defined(CONFIG_SPI_MXS) */

#if defined(CONFIG_MMC_ON_SSP2)

/* mmc1 platform data */

static struct mxs_mmc_platform_data mx23_mmc1_data = {

  .hw_init = mxs_mmc_hw_init_mmc1,

  .hw_release = mxs_mmc_hw_release_mmc1,

  .get_wp = mxs_mmc_get_wp_mmc1,

  .cmd_pullup = mxs_mmc_cmd_pullup_mmc1,

  /*

  Don't change ssp clock because ssp1 and ssp2 share one ssp clock source

  ssp module have own divider.

  .setclock = mxs_mmc_setclock_mmc1,

  */

  .caps = MMC_CAP_4_BIT_DATA,

  .min_clk = 400000,

  .max_clk = 48000000,

  .read_uA        = 50000,

  .write_uA       = 70000,

  .clock_mmc = "ssp.0",

  .power_mmc = NULL,

};

/* mmc1 resource */

static struct resource mx23_mmc1_resource[] = {

  {

  .flags = IORESOURCE_MEM,

  .start = SSP2_PHYS_ADDR,

  .end = SSP2_PHYS_ADDR + 0x2000 - 1,

  },

  {

  .flags = IORESOURCE_DMA,

  .start = MXS_DMA_CHANNEL_AHB_APBH_SSP2,

  .end = MXS_DMA_CHANNEL_AHB_APBH_SSP2,

  },

  {

  .flags = IORESOURCE_IRQ,

  .start = IRQ_SSP2_DMA,

  .end = IRQ_SSP2_DMA,

  },

  {

  .flags = IORESOURCE_IRQ,

  .start = IRQ_SSP_ERROR,

  .end = IRQ_SSP_ERROR,

  },

};

static void __init mx23_init_mmc1(void)

{

  struct platform_device *pdev;

  pdev = mxs_get_device("mxs-mmc", 1);

  if (pdev == NULL || IS_ERR(pdev)) {

  printk ("mxs-mmc1 get device failed\n");

  return;

    }

  pdev->resource = mx23_mmc1_resource;

  pdev->num_resources = ARRAY_SIZE(mx23_mmc1_resource);

  pdev->dev.platform_data = &mx23_mmc1_data;

  mxs_add_device(pdev, 2);

}

#else  /* CONFIG_MMC_ON_SSP2 */

static void mx23_init_mmc1(void)

{

}

#endif /* CONFIG_MMC_ON_SSP2 */

#else /* defined(CONFIG_MMC_MXS) */

#endif /* defined(CONFIG_MMC_MXS) */

...

#if defined(CONFIG_SPI_MXS) || defined(CONFIG_SPI_MXS_MODULE)

CMDLINE_DEVICE_CHOOSE(ssp1, spi1, spi1)

#else

CMDLINE_DEVICE_CHOOSE(ssp1, mmc0, mmc0)

#endif

CMDLINE_DEVICE_CHOOSE(ssp2, mmc1, mmc1)

#if defined(CONFIG_MMC_MXS) || defined(CONFIG_MMC_MXS_MODULE)

#if defined(CONFIG_MMC_ON_SSP1)

linux-2.6.35.3/arch/arm/mach-mx23/mx23evk_pins.c

static struct pin_desc mx23evk_mmc0_pins[] = {

  /* Configurations of SSP1 SD/MMC port pins */

  {

  .name = "SSP1_DATA0",

  .id = PINID_SSP1_DATA0,

  .fun = PIN_FUN1,

  .strength = PAD_4MA,

  .voltage = PAD_3_3V,

  .drive = 1,

  },

  {

  .name = "SSP1_DATA1",

  .id = PINID_SSP1_DATA1,

  .fun = PIN_FUN1,

  .strength = PAD_4MA,

  .voltage = PAD_3_3V,

  .drive = 1,

  },

  {

  .name = "SSP1_DATA2",

  .id = PINID_SSP1_DATA2,

  .fun = PIN_FUN1,

  .strength = PAD_4MA,

  .voltage = PAD_3_3V,

  .drive = 1,

  },

  {

  .name = "SSP1_DATA3",

  .id = PINID_SSP1_DATA3,

  .fun = PIN_FUN1,

  .strength = PAD_4MA,

  .voltage = PAD_3_3V,

  .drive = 1,

  },

  {

  .name = "SSP1_CMD",

  .id = PINID_SSP1_CMD,

  .fun = PIN_FUN1,

  .strength = PAD_4MA,

  .voltage = PAD_3_3V,

  .drive = 1,

  },

  {

  .name = "SSP1_SCK",

  .id = PINID_SSP1_SCK,

  .fun = PIN_FUN1,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .drive = 1,

  },

};

#endif /* CONFIG_MMC_ON_SSP1 */

#if defined(CONFIG_MMC_ON_SSP2)

static struct pin_desc mx23evk_mmc1_pins[] = {

  /* Configurations of SSP2 SD/MMC port pins */

  {

  .name = "SSP2_DATA0",

  .id = PINID_SSP2_DATA0,

  .fun = PIN_FUN3,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .pullup = 1,

  .drive = 1,

  .pull = 1,

  },

  {

  .name = "SSP2_DATA1",

  .id = PINID_SSP2_DATA1,

  .fun = PIN_FUN3,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .pullup = 1,

  .drive = 1,

  .pull = 1,

  },

  {

  .name = "SSP2_DATA2",

  .id = PINID_SSP2_DATA2,

  .fun = PIN_FUN3,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .pullup = 1,

  .drive = 1,

  .pull = 1,

  },

  {

  .name = "SSP2_DATA3",

  .id = PINID_SSP2_DATA3,

  .fun = PIN_FUN3,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .pullup = 1,

  .drive = 1,

  .pull = 1,

  },

  {

  .name = "SSP2_CMD",

  .id = PINID_SSP2_CMD,

  .fun = PIN_FUN3,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .pullup = 1,

  .drive = 1,

  .pull = 1,

  },

  {

  .name = "SSP2_SCK",

  .id = PINID_SSP2_SCK,

  .fun = PIN_FUN3,

  .strength = PAD_8MA,

  .voltage = PAD_3_3V,

  .pullup = 0,

  .drive = 1,

  .pull = 0,

  },

};

#endif /* CONFIG_MMC_ON_SSP2 */

#endif /* CONFIG_MMC_MXS */

...

linux-2.6.35.3/drivers/mmc/host/Kconfig

config MMC_ON_SSP1

  tristate "MMC0 on SSP1"

  depends on MMC_MXS && MACH_MX23EVK

  help

  Select Y to enable MMC0 on SSP1.

config MMC_ON_SSP2

  tristate "MMC1 on SSP2"

  depends on MMC_MXS && MACH_MX23EVK

  help

  Select Y to enable MMC0 on SSP2.