[U-Boot] u-boot-mmc fails on almost every Tegra board

[Jaehoon Chung]

Hi Stephen,

On 01/23/2018 10:39 AM, Jaehoon Chung wrote:
> Hi Stephen,
> 
> On 01/23/2018 02:02 AM, Stephen Warren wrote:
>> Jaehoon,
>>
>> The latest commit in u-boot-mmc.git master branch fails on almost every Tegra board. The MMC device experiences an error during initialization and hence isn't available:
> 
> Thanks for reporting this. I'm not sure but it seems that relevant to my fixing patch.
> 
> commit 9546eb92cb648a8bba0aa9d5930ac751e6e5b9a4
> Author: Jaehoon Chung <jh80.chung at samsung.com>
> Date:   Wed Jan 17 19:36:58 2018 +0900
> 
>     mmc: fix the wrong disabling clock
>     
>     When power is off, clock is not disabling.
>     Because it's passed to 1, mmc->clock should be set to f_min value.
>     Some drivers can't initialize the eMMC/SD card with current status.
>     
>     This patch is to fix the disabling clock value to 0.
>     
>     Fixes: 2e7410d76ad1 ("mmc: disable the mmc clock during power off")
>     
>     Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
>     Reviewed-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
>     Tested-by: Guillaume GARDET <guillaume.gardet at free.fr>
>     Tested-by: Anand Moon <linux.amoon at gmail.com>
> 
> Will check on today. And share the result. Thanks!

I reproduced this issue. i will send the patch for fixing. Thanks!

Best Regards,
Jaehoon Chung

> 
> Best Regards,
> Jaehoon Chung
> 
>>
>> U-Boot 2018.01-05974-gb9b4f146c9 (Jan 22 2018 - 09:18:42 -0700), Build: jenkins-u-boot-denx_uboot_mmc-master-build-U_BOOT_BOARD=p2371-2180-151
>>
>> TEGRA210
>> Model: NVIDIA P2371-2180
>> Board: NVIDIA P2371-2180
>> DRAM:  3.5 GiB
>> MMC:   sdhci at 700b0000: 1, sdhci at 700b0600: 0
>> tegra_mmc_send_cmd_bounced: waiting for status update
>> mmc_init: -110, time 1068
>> *** Warning - No block device, using default environment
>>
>>
>>
> 
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