How to make mmc/sd1 driver work on DM368? .

David Seo

Prodigy 20 points

I am using DM368 SDK V2.0 for Appro

I have the problem to access the mmc/sd1.

I cannot access the mmc/sd1.

MMC/SD0 works well

I modified the source code as follows:

include/asm-arm/arch-davinci/edma.h

#define DM365_DMACH2EVENT_MAP0 0x0C00000Cu => 0xCC00000Cu

arch/arm/mach-davinci/board-dm368-ipnc.c

static struct resource mmc1_resources[] = {

[0] = { /* registers */

.start = DM365_MMC_SD1_BASE,

.end = DM365_MMC_SD1_BASE + SZ_1K - 1,

.flags = IORESOURCE_MEM,

[1] = { /* interrupt */

.start = IRQ_DM3XX_MMCINT1,

.end = IRQ_DM3XX_MMCINT1,

.flags = IORESOURCE_IRQ,

[2] = { /* dma rx */

.start = DM365_DMA_MMC1RXEVT,

.end = DM365_DMA_MMC1RXEVT,

.flags = IORESOURCE_DMA | IORESOURCE_DMA_RX_CHAN,

[3] = { /* dma tx */

.start = DM365_DMA_MMC1TXEVT,

.end = DM365_DMA_MMC1TXEVT,

.flags = IORESOURCE_DMA | IORESOURCE_DMA_TX_CHAN,

[4] = { /* event queue */

.start = EVENTQ_3,

.end = EVENTQ_3,

.flags = IORESOURCE_DMA | IORESOURCE_DMA_EVENT_Q,

};

static struct davinci_mmc_platform_data mmc1_platform_data = {

.mmc_clk = "MMCSDCLK1",

.rw_threshold = 64,

.use_4bit_mode = 1,

.use_8bit_mode = 0,

.max_frq = 50000000,

.pio_set_dmatrig = 1,

};

static struct platform_device mmc1_device = {

.name = "davinci-mmc",

.id = 1,

.dev = {

.platform_data = &mmc1_platform_data,

.num_resources = ARRAY_SIZE(mmc1_resources),

.resource = mmc1_resources,

};

....

static struct platform_device *dm365_ipnc_devices[] __initdata = {

&serial_device,

&mmc0_device,

&mmc1_device,

&nand_device,

&rtc_device,

};

arch/arm/mach-davinci/mux_cfg.c

const struct pin_config __initdata_or_module davinci_dm365_pinmux[] = {

...

MUX_CFG("I2C_SDA", 3, 23, 3, 2, 0) < I checked.

...

}

=====================================================================

I can see the message for mmc/sd1

but mmc/sd1does not work.

the message is as follows:

davinci-mmc davinci-mmc.0: Supporting 4-bit mode

davinci-mmc davinci-mmc.0: Using DMA mode

MUX: initialized SD1_CLK

MUX: initialized SD1_CMD

MUX: initialized SD1_DATA3

MUX: initialized SD1_DATA2

MUX: initialized SD1_DATA1

MUX: initialized SD1_DATA0

davinci-mmc davinci-mmc.1: Supporting 4-bit mode

davinci-mmc davinci-mmc.1: Using DMA mode

mmcblk0: mmc0:0001 00000 7974912KiB

mmcblk0: p1

mmcblk1: mmc1:b368 USD 7830528KiB

mmcblk1:end_request: I/O error, dev mmcblk1, sector 0

Buffer I/O error on device mmcblk1, logical block 0

ls -l /dev/mmc*

brw-rw---- 1 root root 254, 0 Jan 1 00:09 /dev/mmcblk0

brw-rw---- 1 root root 254, 1 Jan 1 00:09 /dev/mmcblk0p1

I want access the mmc/sd1.

I need your help to resolve the problem.

thank you.

over 14 years ago

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How to make mmc/sd1 driver work on DM368? .