Driver load order
Ahmad Fatoum
a.fatoum at pengutronix.de
Thu May 19 05:42:10 PDT 2022
On 19.05.22 14:17, Ahmad Fatoum wrote:
> Hello Frank,
>
> On 19.05.22 12:59, Frank Wunderlich wrote:
>> Hi,
>>
>> I try to create a basic driver for rk808 pmic/iodomains. I've noticed that first the iodomain driver is probed and then the rk808 on,but i need it reversed as rk808 registers regulators linked in iodomain via devicetree.
>>
>> How can i defer iodomain probing till rk808 is ready (regulators available defined as phandles in iodomain dt node)? Currently i get always ENODEV (property does not exist or regulator is not ready yet)....
>>
>> This is my current (dirty) source:
>> https://github.com/frank-w/barebox-r2pro/commits/r2pro-iodomain
>
> While I don't know what iodomains are, I had ported the rk808 driver to barebox for
> use with the Rock Pi N10. I haven't come around to upstream it, because I haven't
> figured out why I can't use the existing regmap helpers like Linux does.
>
> I have sent you the patches as a reply to your mail. Perhaps they'll
> save you some effort.
I see now that Kconfig/Makefile parts are missing, but I trust you can easily add those.
Also, you'll need this patch: https://lore.barebox.org/barebox/20220114084728.311277-1-a.fatoum@pengutronix.de/
(preferably after incorporating Sascha's feedback).
Cheers,
Ahmad
>
> Cheers,
> Ahmad
>
>
>> regards Frank
>>
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>
>
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