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Date:   Thu, 8 Nov 2018 07:00:30 +0100
From:   Andreas Kemnade <andreas@kemnade.info>
To:     t-kristo@ti.com, mturquette@baylibre.com, sboyd@kernel.org,
        linux-omap@vger.kernel.org, linux-clk@vger.kernel.org,
        linux-kernel@vger.kernel.org, bcousson@baylibre.com,
        paul@pwsan.com, tony@atomide.com, letux-kernel@openphoenux.org
Subject: Re: [PATCH 0/2] mach-omap2: handle autoidle denial
Message-ID: <20181108070030.5febd96b@kemnade.info>
In-Reply-To: <20181004203817.22101-1-andreas@kemnade.info>
References: <20181004203817.22101-1-andreas@kemnade.info>
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ping.

..after stumbling again about that problem during testing with 4.20-rc1.
will retest it there.

On Thu,  4 Oct 2018 22:38:15 +0200
Andreas Kemnade <andreas@kemnade.info> wrote:

> On the gta04 with a dm3730 omap_hdq does not work properly when the
> device enters lower power states. Idling uart1 and 2 is enough
> to show up that problem, if there are no other things enabled.
> Further research reveals that hdq iclk must not be turned off during
> transfers, also according to the TRM. That fact is also correctly describ=
ed
> in the flags but the code to handle that is incomplete.
>=20
> To handle multiple users of a single ick, autoidle is disabled
> when a user of that ick requires that (has the OCPIF_SWSUP_IDLE))
>=20
> Changes since the RFC version:
> - mutex lock for autoidle changes
> - deny_idle/allow_idle calls moved to clock enable/disable of the
>   individual modules
>=20
> Andreas Kemnade (2):
>   clk: ti: add a usecount for autoidle
>   arm: omap_hwmod disable ick autoidling when a hwmod requires that
>=20
>  arch/arm/mach-omap2/omap_hwmod.c | 16 ++++++++++++----
>  drivers/clk/ti/autoidle.c        | 32 ++++++++++++++++++++++++--------
>  include/linux/clk/ti.h           |  1 +
>  3 files changed, 37 insertions(+), 12 deletions(-)
>=20
> --=20
> 2.11.0
>=20
>=20

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