From: Vladimir Oltean <olteanv@gmail.com>
To: Mark Brown <broonie@kernel.org>
Cc: linux-spi@vger.kernel.org, lkml <linux-kernel@vger.kernel.org>,
devicetree@vger.kernel.org, netdev <netdev@vger.kernel.org>,
Rob Herring <robh@kernel.org>, Shawn Guo <shawnguo@kernel.org>
Subject: Re: [PATCH v2 5/5] ARM: dts: ls1021a-tsn: Use the DSPI controller in poll mode
Date: Tue, 27 Aug 2019 21:16:39 +0300 [thread overview]
Message-ID: <CA+h21hqMVdsUjBdtiHKtKGpyvuaOf25tc4h-GdDEBQqa3EB7tw@mail.gmail.com> (raw)
In-Reply-To: <20190827181318.GG23391@sirena.co.uk>
On Tue, 27 Aug 2019 at 21:13, Mark Brown <broonie@kernel.org> wrote:
>
> On Tue, Aug 27, 2019 at 09:06:14PM +0300, Vladimir Oltean wrote:
> > On Tue, 27 Aug 2019 at 21:05, Mark Brown <broonie@kernel.org> wrote:
> > > On Mon, Aug 26, 2019 at 04:10:51PM +0300, Vladimir Oltean wrote:
>
> > > > I noticed you skipped applying this patch, and I'm not sure that Shawn
> > > > will review it/take it.
> > > > Do you have a better suggestion how I can achieve putting the DSPI
> > > > driver in poll mode for this board? A Kconfig option maybe?
>
> > > DT changes go through the relevant platform trees, not the
> > > subsystem trees, so it's not something I'd expect to apply.
>
> > But at least is it something that you expect to see done through a
> > device tree change?
>
> Well, it's not ideal - if it performs better all the time the
> driver should probably just do it unconditionally. If there's
> some threashold where it tends to perform better then the driver
> should check for that but IIRC it sounds like the interrupt just
> isn't at all helpful here.
I can't seem to find any situation where it performs worse. Hence my
question on whether it's a better idea to condition this behavior on a
Kconfig option rather than a DT blob which may or may not be in sync.
next prev parent reply other threads:[~2019-08-27 18:16 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-22 21:15 [PATCH v2 0/5] Poll mode for NXP DSPI driver Vladimir Oltean
2019-08-22 21:15 ` [PATCH v2 1/5] spi: spi-fsl-dspi: Reduce indentation level in dspi_interrupt Vladimir Oltean
2019-08-23 11:02 ` Applied "spi: spi-fsl-dspi: Reduce indentation level in dspi_interrupt" to the spi tree Mark Brown
2019-08-22 21:15 ` [PATCH v2 2/5] spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours Vladimir Oltean
2019-08-23 10:28 ` Mark Brown
2019-08-23 10:30 ` Vladimir Oltean
2019-08-23 10:50 ` Mark Brown
2019-08-23 10:59 ` Mark Brown
2019-08-23 12:06 ` Vladimir Oltean
2019-08-23 21:03 ` Mark Brown
2019-08-23 11:02 ` Applied "spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours" to the spi tree Mark Brown
2019-08-22 21:15 ` [PATCH v2 3/5] spi: spi-fsl-dspi: Remove impossible to reach error check Vladimir Oltean
2019-08-23 11:02 ` Applied "spi: spi-fsl-dspi: Remove impossible to reach error check" to the spi tree Mark Brown
2019-08-22 21:15 ` [PATCH v2 4/5] spi: spi-fsl-dspi: Use poll mode in case the platform IRQ is missing Vladimir Oltean
2019-08-23 11:02 ` Applied "spi: spi-fsl-dspi: Use poll mode in case the platform IRQ is missing" to the spi tree Mark Brown
2019-08-22 21:15 ` [PATCH v2 5/5] ARM: dts: ls1021a-tsn: Use the DSPI controller in poll mode Vladimir Oltean
2019-08-26 13:10 ` Vladimir Oltean
2019-08-27 18:05 ` Mark Brown
2019-08-27 18:06 ` Vladimir Oltean
2019-08-27 18:13 ` Mark Brown
2019-08-27 18:16 ` Vladimir Oltean [this message]
2019-08-27 18:31 ` Mark Brown
2019-09-11 6:33 ` Shawn Guo
2019-09-11 7:00 ` Geert Uytterhoeven
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