linux-kernel - Re: [PATCH v2 0/2] Add initial support for RPM clocks

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Message-ID: <20150921043310.GO13472@usrtlx11787.corpusers.net>
Date:	Sun, 20 Sep 2015 21:33:10 -0700
From:	Bjorn Andersson <bjorn.andersson@...ymobile.com>
To:	Georgi Djakov <georgi.djakov@...aro.org>
CC:	<sboyd@...eaurora.org>, <mturquette@...libre.com>,
	<linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH v2 0/2] Add initial support for RPM clocks

On Mon 03 Aug 09:48 PDT 2015, Georgi Djakov wrote:

> This patchset adds initial support for the clocks controlled by
> the RPM (Resource Power Manager) processor on Qualcomm platforms.
> It depends on Bjorn's Qualcomm SMD & RPM patches, that are now in
> linux-next: https://lkml.org/lkml/2015/7/27/1125
> 
> The first patch implements the RPM clock operations, which are
> using a shared memory for sending requests to the RPM processor.
> The second patch adds the support of RPM clocks on the MSM8916
> platform.
> 

I pulled this set into my local tree and added a MSM8974 driver; so I
could enable cxo_a2 and load the WCNSS firmware. This works great.

I do however have a problem that if I revise the gcc and mmcc drivers to
be rooted in cxo_clk_src (like you have for 8916) the clk_set_rate() in
msm_serial messes up my uart - way before the rpmcc driver is loaded.
I have not debugged this further (as it wasn't needed for my usecase),
but have you seen any issues related to this?

Will you be able to send out v3 anytime soon, so I can rebase my 8974
patch and send that out? Or would you be interested in me sending you my
8974 and you can include that in your series later?

Regards,
Bjorn
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