Re: [Qemu-arm] [RFC PATCH] hw: arm: Add basic support for cprman (clock subsystem)

[Peter Maydell]

On 15 July 2018 at 23:06, Guenter Roeck <address@hidden> wrote:
> Add basic support for BCM283x CPRMAN. Provide support for reading and
> writing CPRMAN registers and initialize registers with sensible default
> values. During runtime retain any written values.
>
> Basic CPRMAN support is necessary and sufficient to boot Linux on raspi2
> and raspi3 systems.

I can boot Linux on raspi3 with current upstream's level
of cprman support:
https://translatedcode.wordpress.com/2018/04/25/debian-on-qemus-raspberry-pi-3-model/

> Signed-off-by: Guenter Roeck <address@hidden>
> ---
> I don't seriously expect this patch to get accepted, but I thought
> it might be valuable enough for others to use it when playing with
> raspi2 and raspi3 emulations.

I'm not necessarily going to rule it out entirely, but I'm
definitely not very happy about having a model of hardware
that's very clearly "do something that Linux likes". I'd
really rather see hardware documentation here -- presumably
whoever is writing the Linux drivers has that?

thanks
-- PMM