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From: Philipp Zabel <p.zabel@pengutronix.de>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>,
	linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] reset: add acquired/released state for exclusive reset controls
Date: Tue, 19 Mar 2019 17:37:54 +0100	[thread overview]
Message-ID: <1553013474.6482.5.camel@pengutronix.de> (raw)
In-Reply-To: <20190221152858.GA8652@ulmo>

Hi Thierry,

On Thu, 2019-02-21 at 16:28 +0100, Thierry Reding wrote:
> On Thu, Feb 21, 2019 at 04:25:53PM +0100, Thierry Reding wrote:
> > From: Philipp Zabel <p.zabel@pengutronix.de>
> > 
> > There are cases where a driver needs explicit control over a reset line
> > that is exclusively conneted to its device, but this control has to be
> > temporarily handed over to the power domain controller to handle reset
> > requirements during power transitions.
> > Allow multiple exclusive reset controls to be requested in 'released'
> > state for the same physical reset line, only one of which can be
> > acquired at the same time.
> > 
> > Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> > Signed-off-by: Thierry Reding <treding@nvidia.com>
> > ---
> >  drivers/reset/core.c  | 139 ++++++++++++++++++++++++++++++++++++++----
> >  include/linux/reset.h |  93 ++++++++++++++++++++++------
> >  2 files changed, 200 insertions(+), 32 deletions(-)
> 
> Hi Philipp,
> 
> the bulk of this is unchanged relative to what you had posted
> originally. I squashed in the few things that we had already discussed
> earlier (EINVAL -> EPERM) and a couple of minor fixes for issues that I
> found while working with this.
> 
> Attached is my fixup patch which contains all the changes I made on top
> of your version and that I squashed into this.

I have no further comments on this, I find all these changes either
necessary or useful.

regards
Philipp

      parent reply	other threads:[~2019-03-19 16:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-21 15:25 Thierry Reding
2019-02-21 15:25 ` [PATCH 2/5] reset: Add acquired flag to of_reset_control_array_get() Thierry Reding
2019-03-19 16:37   ` Philipp Zabel
2019-03-20  6:51     ` Felipe Balbi
2019-03-20 10:27       ` Philipp Zabel
2019-02-21 15:25 ` [PATCH 3/5] reset: Add acquire/release support for arrays Thierry Reding
2019-03-19 16:43   ` Philipp Zabel
2019-02-21 15:25 ` [PATCH 4/5] soc/tegra: pmc: Implement acquire/release for resets Thierry Reding
2019-03-19 16:45   ` Philipp Zabel
2019-02-21 15:25 ` [PATCH 5/5] drm/tegra: sor: Implement acquire/release for reset Thierry Reding
2019-03-19 16:45   ` Philipp Zabel
2019-02-21 15:28 ` [PATCH 1/5] reset: add acquired/released state for exclusive reset controls Thierry Reding
2019-03-18  9:12   ` Thierry Reding
2019-03-18 16:40     ` Philipp Zabel
2019-03-18 16:59       ` Thierry Reding
2019-03-19 16:37   ` Philipp Zabel [this message]

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