OMaP5432 - not detecting mmc card

Hi Gowthami,

Can you post your device tree entry and make sure the follwing configuration in 

drivers/mmc/host/Kconfig is applied:

tristate "TI OMAP High Speed Multimedia Card Interface support"

 config MMC_OMAP_HS

- depends on SOC_OMAP2430 || ARCH_OMAP3 || ARCH_OMAP4
+ depends on SOC_OMAP2430 || ARCH_OMAP3 || ARCH_OMAP4 || SOC_OMAP5

Regards,

Boyko

Hi Bokyo,

mmc@4809c000 {
                        compatible = "ti,omap4-hsmmc";
                        reg = <0x4809c000 0x400>;
                        interrupts = <0x0 0x53 0x4>;
                        ti,hwmods = "mmc1";
                        ti,dual-volt;
                        ti,needs-special-reset;
                        dmas = <0x14 0x3d 0x14 0x3e>;
                        dma-names = "tx", "rx";
                        vmmc-supply = <0x1b>;
                        bus-width = <0x4>;
                };

And yes, MMC_OMAP_HS is enabled.

Thanks,

Gowthami

Hi Gowthami,

What kernel are you using?

Regards,

Boyko

Hi Bokyo,

I am using linux 3.8.13. The one which is coming with ti-glsdk_omap5-uevm_6_01_00_01.

Thanks,

Gowthami

Did you check your pinmux settings? Perhaps something as simple as that can be missed sometimes.

Also take a look at this patch http://www.spinics.net/lists/linux-mmc/msg21035.html, in case the reader is working but it is misbehaving. Observe DMESG with small card ( <<4G) when  reboot.

Regards,

Boyko

Hi Bokyo,

Fails in mmc_send_app_op_cond. Getting the error code as -110(timeout).I am booting through emmc. I checked with the reference manual. It seems other dependent blocks are also enabled. What could be the other possibilities?

[    1.976562] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
[    1.976562] mmc0: starting CMD52 arg 00000c00 flags 00000195
[    1.976562] mmc0: req done (CMD52): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: starting CMD52 arg 80000c08 flags 00000195
[    1.976562] mmc1: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 18 width 0 timing 0
[    1.976562] mmc0: req done (CMD52): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 18 width 0 timing 0
[    1.976562] mmc0: starting CMD0 arg 00000000 flags 000000c0
[    1.976562] mmc0: req done (CMD0): 0: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 18 width 0 timing 0
[    1.976562] mmc0: starting CMD8 arg 000001aa flags 000002f5
[    1.976562] mmc0: req done (CMD8): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: starting CMD5 arg 00000000 flags 000002e1
[    1.976562] mmc0: req failed (CMD5): -110, retrying...
[    1.976562] mmc0: req failed (CMD5): -110, retrying...
[    1.976562] mmc0: req failed (CMD5): -110, retrying...
[    1.976562] mmc0: req done (CMD5): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: starting CMD55 arg 00000000 flags 000000f5
[    1.976562] mmc0: req done (CMD55): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: starting CMD55 arg 00000000 flags 000000f5
[    1.976562] mmc0: req done (CMD55): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: starting CMD55 arg 00000000 flags 000000f5
[    1.976562] mmc0: req done (CMD55): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: starting CMD55 arg 00000000 flags 000000f5
[    1.976562] mmc0: req done (CMD55): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 18 width 0 timing 0
[    1.976562] mmc0: starting CMD1 arg 00000000 flags 000000e1
[    1.976562] mmc0: req done (CMD1): -110: 00000000 00000000 00000000 00000000
[    1.976562] mmc0: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 timing 0

Thanks,

Gowthami

Hi Gowthami,

The card could be unresponsive because of noise, have you tested your setup perhaps with other  board or power supply?

Regards,

Boyko

Hi Bokyo,

Yes , the card is getting recognized when I tried with the same board but booted from u-boot.

Thanks,

Gowthami

Hi Bokyo,

What are the other blocks that need to be active for getting the response from the card?

Because, the same setup works when I boot from u-boot but I am not getting any response from the card when booted from emmc.

Thanks,

Gowthami