[U-Boot] [PATCH] imx: mx7dsabresd: include BLK for MMC/eMMC support of driver model

[Eric Nelson]

Hi Tom,

On 10/11/2017 01:51 PM, Tom Rini wrote:
> On Wed, Oct 11, 2017 at 05:50:04PM -0300, Fabio Estevam wrote:
>> Hi Eric,
>>
>> That was the fix I was waiting for, thanks!
>>
>> On Wed, Oct 11, 2017 at 5:29 PM, Eric Nelson <eric at nelint.com> wrote:
>>
>> Please add a commit log and explain that this fixes a regression.
>>
>>> Change-Id: I1bdfffe782a61a4c688f1bb56e85448024cd497b
>>
>> Please remove this line.
>>
>> Also, when you send a v2, please do the same change in
>> mx7dsabresd_secure_defconfig.
>>
>>> Signed-off-by: Eric Nelson <eric at nelint.com>
>>
>> Now I can boot a kernel successfully, thanks:
>>
>> Tested-by: Fabio Estevam <fabio.estevam at nxp.com>
> 
> Is there perhaps a dependency here we need to enforce via Kconfig so
> this isn't a game of whack-a-mole?  Thanks!
> 

We have a "default Y if DM" for it, which should be enough.

http://git.denx.de/?p=u-boot.git;a=blob;f=drivers/block/Kconfig;h=26760895f99dd53370f9077f5b7213a1a6f241fe;hb=HEAD#l3

Commit 6fbbcfd explicitly disabled it when converting to
DM_MMC (secure_defconfig followed suit in commit 8ae5bb3), and
that's where the trouble came in.

Hmmm. A quick search shows that quite a few configurations
have this choice (CONFIG_DM_MMC without CONFIG_BLK):

~u-boot/configs$ git grep -l CONFIG_DM_MMC=y | xargs grep BLK
am335x_boneblack_vboot_defconfig:# CONFIG_BLK is not set
am335x_evm_defconfig:# CONFIG_BLK is not set
am335x_hs_evm_defconfig:# CONFIG_BLK is not set
am43xx_evm_defconfig:# CONFIG_BLK is not set
am43xx_evm_usbhost_boot_defconfig:# CONFIG_BLK is not set
am43xx_hs_evm_defconfig:# CONFIG_BLK is not set
am57xx_evm_defconfig:# CONFIG_BLK is not set
am57xx_hs_evm_defconfig:# CONFIG_BLK is not set
k2g_evm_defconfig:# CONFIG_BLK is not set
k2g_hs_evm_defconfig:# CONFIG_BLK is not set
ls1012aqds_qspi_defconfig:# CONFIG_BLK is not set
ls1012ardb_qspi_defconfig:# CONFIG_BLK is not set
mx6slevk_defconfig:# CONFIG_BLK is not set
mx6slevk_spinor_defconfig:# CONFIG_BLK is not set
mx6sllevk_defconfig:# CONFIG_BLK is not set
mx6sllevk_plugin_defconfig:# CONFIG_BLK is not set
mx6sxsabreauto_defconfig:# CONFIG_BLK is not set
mx6ull_14x14_evk_defconfig:# CONFIG_BLK is not set
mx6ull_14x14_evk_plugin_defconfig:# CONFIG_BLK is not set
mx7ulp_evk_defconfig:# CONFIG_BLK is not set
mx7ulp_evk_plugin_defconfig:# CONFIG_BLK is not set
omap3_logic_defconfig:# CONFIG_BLK is not set
pic32mzdask_defconfig:# CONFIG_BLK is not set

Are all of these broken?

I don't have any of the other boards, and am not in a
position to say whether there's a legitimate use case
for DM_MMC without BLK.