From: Mark Brown <broonie@kernel.org>
To: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Cc: gregkh@linuxfoundation.org, stefan@agner.ch,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
Stefan Agner <stefan.agner@toradex.com>
Subject: Re: [RFC 1/2] spi: spidev: Use 'new_id' sysfs file for enabling spidev
Date: Wed, 20 Apr 2016 14:52:59 +0100 [thread overview]
Message-ID: <20160420135259.GK3217@sirena.org.uk> (raw)
In-Reply-To: <57177FEF.8080906@toradex.com>
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On Wed, Apr 20, 2016 at 06:41:11PM +0530, Bhuvanchandra DV wrote:
> On 04/20/2016 05:47 PM, Mark Brown wrote:
> >The DT should describe the hardware so the DT should describe whatever
> >device is connected to the spidev, what you're trying to do is have
> >spidev bind to these new compatible strings.
> The device which i was pointing earlier is the SPI master device(spiB.C) not
> the external h/w device interfaced to it. Yes, DT will describe the h/w
> interfaced on SPI master device(spiB.C). In case of spidev we are not
> supposed to describe in DT as it is not a real h/w. The intention of this
> patchset is to completely avoid spidev in DT and load it via sysfs new_id
> file for selected SPI master device(spiB.C).
This is the problem, you've not understood what spidev is. spidev is
providing access to a slave device so it binds to the slave device.
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next prev parent reply other threads:[~2016-04-20 13:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-18 11:18 [RFC 0/2] sysfs new_id file support for spidev Bhuvanchandra DV
2016-04-18 11:18 ` [RFC 1/2] spi: spidev: Use 'new_id' sysfs file for enabling spidev Bhuvanchandra DV
2016-04-18 13:01 ` Mark Brown
2016-04-20 12:13 ` Bhuvanchandra DV
2016-04-20 12:17 ` Mark Brown
2016-04-20 13:11 ` Bhuvanchandra DV
2016-04-20 13:52 ` Mark Brown [this message]
2016-04-18 11:18 ` [RFC 2/2] spi core: Add new sysfs 'num_chipselect' file Bhuvanchandra DV
2016-04-18 12:14 ` Mark Brown
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