On Sat, Jun 2, 2018 at 9:03 PM, Heinrich Schuchardt xypron.glpk@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.