[PATCH 4/4] mmc: omap_hsmmc: Simplify init for twl6030 MMC card detect

T Krishnamoorthy, Balaji balajitk at ti.com
Mon Mar 5 05:25:56 EST 2012


On Mon, Mar 5, 2012 at 2:46 PM, Rajendra Nayak <rnayak at ti.com> wrote:
> On Friday 02 March 2012 10:52 PM, Tony Lindgren wrote:
>>
>> BTW, with -rc5, looks like re-inserting omap_hsmmc on omap4 fails
>> to detect any cards, and then fails to unload. This works on omap3
>> just fine. Any ideas why that would be?
>
>
> Yeah, looks like thats broken. I am not sure whats going wrong though.
> I just enabled CONFIG_MMC_DEBUG and saw these logs below.
>
> Venkat/Balaji, care to look at this one?
>

Let me check this

> # insmod omap_hsmmc.ko
> [   43.358398] omap_hsmmc omap_hsmmc.0: context was not lost
> [   43.364105] omap_hsmmc omap_hsmmc.0: enabled
> [   44.434661] mmc0: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0
> timing 0
> [   44.442352] omap_hsmmc omap_hsmmc.0: Set clock to 0Hz
> [   44.474365] omap_hsmmc omap_hsmmc.0: disabled
> [   44.482208] omap_hsmmc omap_hsmmc.4: context was not lost
> [   44.482208] omap_hsmmc omap_hsmmc.4: enabled
> [   44.546600] omap_hsmmc omap_hsmmc.0: context was not lost
> [   44.552276] omap_hsmmc omap_hsmmc.0: enabled
> [   44.552276] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
> [   44.563720] mmc0: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 18 width 0
> timing 0
> [   44.572174] omap_hsmmc omap_hsmmc.0: Set clock to 0Hz
> [   44.613800] mmc0: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 18 width
> 0 timing 0
> [   44.621887] omap_hsmmc omap_hsmmc.0: Set clock to 400000Hz
> [   44.735290] mmc0: starting CMD52 arg 00000c00 flags 00000195
> [   44.741271] omap_hsmmc omap_hsmmc.0: mmc0: CMD52, argument 0x00000c00
> [   45.560241] mmc1: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0
> timing 0
> [   45.567871] omap_hsmmc omap_hsmmc.4: Set clock to 0Hz
> [   45.591491] omap_hsmmc omap_hsmmc.4: disabled
> #
> #
> # rmmod omap_hsmmc
> [  607.302307] omap_hsmmc omap_hsmmc.4: context was not lost
> [  607.308044] omap_hsmmc omap_hsmmc.4: enabled
> [  607.312591] omap_hsmmc omap_hsmmc.4: disabled
> [  607.317199] omap_hsmmc omap_hsmmc.4: context was not lost
> [  607.322875] omap_hsmmc omap_hsmmc.4: enabled
>



More information about the linux-arm-kernel mailing list