* Using spidev driver for spi over gpio-device?
@ 2010-08-12 8:26 Orjan Friberg
[not found] ` <4C63B034.1000007-Gxjboj7dVqxWk0Htik3J/w@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Orjan Friberg @ 2010-08-12 8:26 UTC (permalink / raw)
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Hi,
Is a SPI device as bitbanged over GPIO enough of a "real" SPI device
that the spidev can be used for it? I'm having trouble getting the
interfaces to line up.
Thanks,
Orjan
--
Orjan Friberg
FlatFrog Laboratories AB
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* Re: Using spidev driver for spi over gpio-device?
[not found] ` <4C63B034.1000007-Gxjboj7dVqxWk0Htik3J/w@public.gmane.org>
@ 2010-08-12 9:40 ` David Brownell
[not found] ` <556655.15797.qm-g47maUHHHF8HBU+L9ui1Svu2YVrzzGjVVpNB7YpNyf8@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: David Brownell @ 2010-08-12 9:40 UTC (permalink / raw)
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
Orjan Friberg
> Is a SPI device as bitbanged over GPIO enough of
> a "real" SPI device
> that the spidev can be used for it?
Yes -- modulo bugs. The bitbanging would be via
the SPI master controller, and that's written to
be fairly close to a reference implementation.
and spidev is just one possible client.
I'm having
> trouble getting the
> interfaces to line up.
>
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* Re: Using spidev driver for spi over gpio-device?
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@ 2010-08-12 9:47 ` Orjan Friberg
0 siblings, 0 replies; 3+ messages in thread
From: Orjan Friberg @ 2010-08-12 9:47 UTC (permalink / raw)
To: David Brownell
Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
On 2010-08-12 11:40, David Brownell wrote:
>> Is a SPI device as bitbanged over GPIO enough of
>> a "real" SPI device
>> that the spidev can be used for it?
>
> Yes -- modulo bugs. The bitbanging would be via
> the SPI master controller, and that's written to
> be fairly close to a reference implementation.
>
> and spidev is just one possible client.
Great, thanks.
--
Orjan Friberg
FlatFrog Laboratories AB
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2010-08-12 8:26 Using spidev driver for spi over gpio-device? Orjan Friberg
[not found] ` <4C63B034.1000007-Gxjboj7dVqxWk0Htik3J/w@public.gmane.org>
2010-08-12 9:40 ` David Brownell
[not found] ` <556655.15797.qm-g47maUHHHF8HBU+L9ui1Svu2YVrzzGjVVpNB7YpNyf8@public.gmane.org>
2010-08-12 9:47 ` Orjan Friberg
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