[U-Boot] Generic uclass ID

[Ramon Fried]

On Sat, Jun 2, 2018 at 9:03 PM, Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
> On 06/02/2018 06:25 PM, Ramon Fried wrote:
>> Hi Simon, all.
>>
>> I want to port a specific driver from Linux Kernel (Qualcomm smem)
>> which is declared in Linux as platform device.
>> The implementation is very specific and It doesn't fall into any
>> defined uclass id.
>> I still want to use the dm framework, what's the approach taken on
>> these kind of things ?
>> Is it possible to create a generic uclass id ?
>
> Hello Ramon,
>
> a major benefit of the driver model is that drivers are selected via the
> device tree.
>
> In Linux the driver is in drivers/soc. Wouldn't it make sense to create
> a minimal uclass for platform devices in drivers/soc on U-Boot?
>
> drivers/ram/ram-uclass.c shows what a minimal uclass looks like.
> The identifier has to be added in include/dm/uclass-id.h.
>
> Best regards
>
> Heinrich
Thanks for the comment Heinrich.
My initial intention was to place the driver under drivers/soc and I
do thing that
creating a UCLASS_PLATFORM make sense, acutally, it's exaclt what I'm suggesting
in a different name.
The thing is that there's no apperent ops that I think will suit all
the platform drivers as they're different in nature.
So, I don't see any requirement to create a platform_uclass.c file.

Thanks,
Ramon.