Thread (20 messages) 20 messages, 4 authors, 2017-11-14

Re: [PATCH v9 3/7] mailbox: qcom: Move the apcs struct into a separate header

From: Stephen Boyd <hidden>
Date: 2017-11-14 18:12:24
Also in: linux-arm-msm, linux-clk, lkml

On 11/13, Bjorn Andersson wrote:
On Mon 13 Nov 18:12 PST 2017, Stephen Boyd wrote:
quoted
On 10/27, Georgi Djakov wrote:
quoted
Hi Bjorn,

Thanks for reviewing!

On 10/26/2017 07:28 AM, Bjorn Andersson wrote:
quoted
On Thu 21 Sep 09:49 PDT 2017, Georgi Djakov wrote:
quoted
Move the structure shared by the APCS IPC device and its subdevices
into a separate header file.
As you're creating the apcs regmap with devm_regmap_init_mmio() you can
just call dev_get_regmap(dev->parent) in your child to get the handle.
Ok, thanks!
quoted
But I would prefer that you just add the clock code to the existing
driver.
This will require an ack from Stephen, and i got the impression that he
prefers a separate clk driver [1].

Stephen, are you ok with registering the clocks from the apcs mailbox
driver?

[1] https://lkml.org/lkml/2017/6/26/750
The parent regmap "trick" was the plan. Is something wrong with
that?
Not at all, but then this patch (moving apcs context to a shared header
file) shouldn't be needed, or am I missing something?
Agreed.
quoted
Not having random clk drivers scattered throughout the tree is
sort of nice because it makes for an easier time finding things
that are similar. Maybe that's an abuse of the driver model
though? Just to get things into some same directory. I'm fine
either way.
Keeping the clock driver in the clock subsystem does make sense. I see
now that there is a include of a local header file as well, so that
would just be messy to keep split.

I'm fine with the extra driver instance, it's the DT that I don't think
should describe the fact that we want to keep the clock-part in the
clock subsystem.

Do you see any problems spawning the clock driver programmatically and
then calling of_clk_add_hw_provider() on the parent's of_node?
Nope. We shouldn't need to modify DT to make this work.

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