I found that an additional error is -110 (EMEDIA) today.

[  117.697662] mmc0: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 21 width
0 timing 0
[  117.705810] microsd_set_power
[  117.712768] regulator_enable (0)
[  117.736663] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21
width 0 timing 0
[  117.802551] mmc0: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 21
width 0 timing 0
[  117.818450] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21
width 0 timing 0
[  117.865142] mmc0: mmc_spi_read_ocr (ff8000).
[  117.869689] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20
width 0 timing 0
[  117.877777] mmc0: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 20
width 0 timing 0
[  117.888031] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20
width 0 timing 0
[  118.082366] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 20
width 0 timing 0
[  118.113098] mmc0: mmc_sd_switch (err : -84).
[  118.117858] mmc0: read switch failed (attempt 1)
[  118.157897] mmc0: mmc_sd_switch (err : -110).
[  118.162536] mmc0: read switch failed (attempt 2)


On 7월18일, 오전10시20분, mindole <mindole....@gmail.com> wrote:
> I'm using TI (OMAP4) in Kernel.
>
> I'm testing the function of SDCard external.
>
> After change the pin the device tree, I can the log as following.
> mmc_sd_switch (err : -84).
>
> [   48.682037] mmc0: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 21 width
> 0 timing 0
>
> [   48.690368] microsd_set_power
>
> [   48.697662] regulator_enable (0)
>
> [   48.721008] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21
> width 0 timing 0
>
> [   48.786651] mmc0: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 21
> width 0 timing 0
>
> [   48.802276] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21
> width 0 timing 0
>
> [   48.871459] mmc0: mmc_spi_read_ocr (ff8000).
>
> [   48.875915] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20
> width 0 timing 0
>
> [   48.883972] mmc0: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 20
> width 0 timing 0
>
> [   48.893951] mmc0: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 20
> width 0 timing 0
>
> [   49.089843] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 20
> width 0 timing 0
>
> [   49.112396] mmc0: mmc_sd_switch (err : -84).
>
> [   49.117065] mmc0: read switch failed (attempt 1)
>
> [  126.978851] dwork_timer: pm_qos_remove_request for CPU_DMA_LATENCY
>
> Could you please the answer about problem??
>
> Thanks,

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