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Re: [Qemu-devel] [RFC PATCH] hw: arm: Add basic support for cprman (cloc

From: Peter Maydell
Subject: Re: [Qemu-devel] [RFC PATCH] hw: arm: Add basic support for cprman (clock subsystem)
Date: Mon, 16 Jul 2018 10:08:58 +0100

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:

> 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?

-- PMM

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