> On Dec 10, 2014, at 19:42, Ian Campbell <ijc@hellion.org.uk> wrote:
>
>>>> The second question is about adding missing .ko while making initrd.
>>>> Right now, in order to include necessary regulator drivers
>>>> (palmas-regulator.ko etc.) in the initrd, I have to manually add
>>>> the required modules in /etc/initramfs-tools/modules. Is it necessary
>>>> to look into initramfs-tools and make a patch to include the required
>>>> .ko by default? Or there are other preferred ways to solve the
>>>> problem if the OMAP5432 uEVM can be called supported by Debian.
>>>
>>> This is the job or initramfs-tools. v0.118 in sid tries harder to load
>>> things like regulators, clk, phy and pinctrl, what version are you
>>> using?
>>
>> v0.118 is the current version I used, but looks like it doesn’t include
>> the regulator .ko properly on OMAP5432 uEVM unless I told it explicitly...
>
> Probably best to file a bug then. The maintainers will likely want to
> know the names of all the missing modules, plus the contents of /sys
> ("find /sys -ls", I suppose).
>
> If you want to dig into this yourself then look for the file
> hook-functions in initramfs-tools and search for "regulator", there are
> two references corresponding to the MODULES=dep and MODULES=most
> configurations. Since it isn't working I expect you are using
> MODULES=dep which is handled with:
> # sys walk some important device classes
> for class in gpio phy regulator; do
> for device in /sys/class/$class/*; do
> device="$(readlink -f "$device")" \
> && sys_walk_mod_add "$device"
> done
> done
>
> MODULES=most copies the whole of kernel/drivers/regulator, which seems
> less likely to be able to go wrong.
I looked through the scripts both in the unstable archive and git. The
current v0.118 (yes, it does be packaged as v0.118) I got from unstable archive
doesn’t contain the patch that handles with the ‘regulator, clk, phy
and pinctrl’ modules, while the git tree has already had it. I rebuilt
the initramfs-tools directly from the git. And it works on OMAP5432 uEVM.
Baozi
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