BBB MMC / SD detection instability with U-Boot 2014.04 (CPU 1GHz)

[SAITOU Toshihide]

In message: <537B62D1.4090901 at hot.ee>
            "Sulev-Madis Silber (ketas)" <madis555 at hot.ee> writes:
> On 2014-05-20 15:20, SAITOU Toshihide wrote:
>> In message: <20140520.191001.03109216.toshi at ruby.ocn.ne.jp>
>>             SAITOU Toshihide <toshi at ruby.ocn.ne.jp> writes:
>>> In message: <537ACDB2.9080808 at hot.ee>
>>>             "Sulev-Madis Silber (ketas)" <madis555 at hot.ee> writes:
>>>>
>>>> Actually I guess many people might think like me... "HELL, optimizing
>>>> boot time of 1min?! I have more important tasks to do than this".
>>>
>>> If you have ``device sdhci'' line in conf/BEAGLEBONE, is there any
>>> differences by changing mmchs to sdhci in am335x.dtsi and
>>> beaglebone-black.dts? And also remove ``status = "disabled"''
> 
> Don't edit am335x.dtsi
> 
> And beaglebone-black.dts already has proper config.

In this case, how does ``device sdhci'' driver know the register address?
I thought that there is an inconsistency in BEAGLEBONE config and
dts file for the SD/MMC driver.


>>> It's needed for me to detect eMMC, and the perfomance is
>>> better: http://lists.freebsd.org/pipermail/freebsd-arm/2013-August/006332.html
>>>
>>> But I don't success to boot from eMMC yet with u-boot-2014.04. I need
>>> to change u-boot.
>> 
>> It was booted from eMMC, though it failed sometimes.
> 
> Are you sure it booted from eMMC? Like, I can't find eMMC in loader
> (ubldr). So I need SD to complete this part of boot.
> 
> Not sure what I need to patch, probably loader? Hopefully the old uboot
> can be used as well. Version check or something...

Yes sure, because SD card is detached.  The pach is for u-boot.


>> u-boot-2014.04.tar.bz2
>> 
>>   patch
>> 
>>     1. apply these patches:
>> 
>>          http://lists.freebsd.org/pipermail/freebsd-arm/2014-April/007922.html
>>          ~/crochet-freebsd/board/BeagleBone/files/uboot-2013.04_api_api_storage.c.patch
>>          ~/crochet-freebsd/board/BeagleBone/files/uboot-2013.04_drivers_mmc_mmc.c.patch
>> 
>>        patch -p1 or edit.
>> 
>>     2. add followings to include/configs/am335x_evm.h:
>> 
>>          #ifndef CONFIG_SPL_BUILD
>>          #define CONFIG_CMD_ELF
>>          #define CONFIG_API
>>          #define CONFIG_SYS_MMC_MAX_DEVICE 2
>>          #endif
>> 
>>     3. comment WATCHDOG in include/configs/ti_am335x_common.h:
>> 
>>         #define CONFIG_HW_WATCHDOG
>>         #define CONFIG_OMAP_WATCHDOG
>> 
>>         #define CONFIG_SPL_WATCHDOG_SUPPORT
>> 
>>   build
>> 
>>     gmake CROSS_COMPILE=arm-eabi- am335x_boneblack_config
>>     gmake CROSS_COMPILE=arm-eabi-
>> 
>> 
>>   uEnv.txt
>> 
>>     bootdelay=2
>>     fdtaddr=0x80000100
>>     loadaddr=0x88000000
>>     loaderdev=disk
>>     fdtfile=beaglebo.dtb
>>     bootdir=
>>     bootfile=ubldr
>>     mmcdev=1
>>     mmcloados=mmc rescan
>>     loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenv}
>>     importbootenv=env import -t $loadaddr $filesize
>>     findfdt=setenv fdtfile beaglebo.dtb
>>     loadimage=fatload mmc ${mmcdev} ${loadaddr} ${bootfile}
>>     loadfdt=fatload mmc ${mmcdev} ${fdtaddr} ${fdtfile}; fdt addr ${fdtaddr}
>>     mmcboot=bootelf ${loadaddr}
>>     nandboot=run mmcboot
>> 
>> Please ignore ``Card did not respond to voltage select!'' message.
>> 
> 
> Crochet already has all those patches, so I use uboot from there.

Yes, I use patches of crochet for u-boot-2014.04.

-- 
SAITOU Toshihide