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From: Chris Packham <chris.packham@alliedtelesis.co.nz>
To: broonie@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com,
	Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Chris Packham <chris.packham@alliedtelesis.co.nz>
Subject: [PATCH v5 0/2] SPI bus multiplexing
Date: Tue,  4 Feb 2020 16:28:36 +1300	[thread overview]
Message-ID: <20200204032838.20739-1-chris.packham@alliedtelesis.co.nz> (raw)

This is a revisit of two earlier efforts to add more complex mutliplexing to
SPI busses.

https://patchwork.kernel.org/patch/2706151/
https://patchwork.kernel.org/patch/10897255/

This version makes use of the general purpose mux controller which simplifies
things greatly.

One outstanding problem is the need for the spi-max-frequency on the mux
device. This is not used for anything and is just needed to satisfy the spi
driver infrastructure which expects all spi devices to have this property.

Chris Packham (2):
  dt-bindings: spi: Document binding for generic SPI multiplexer
  spi: Add generic SPI multiplexer

 .../devicetree/bindings/spi/spi-mux.yaml      |  89 +++++++++
 drivers/spi/Kconfig                           |  11 ++
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-mux.c                         | 187 ++++++++++++++++++
 4 files changed, 288 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-mux.yaml
 create mode 100644 drivers/spi/spi-mux.c

-- 
2.25.0


WARNING: multiple messages have this Message-ID (diff)
From: Chris Packham <chris.packham-6g8wRflRTwXFdCa3tKVlE6U/zSkkHjvu@public.gmane.org>
To: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	Andy Shevchenko
	<andy.shevchenko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Chris Packham
	<chris.packham-6g8wRflRTwXFdCa3tKVlE6U/zSkkHjvu@public.gmane.org>
Subject: [PATCH v5 0/2] SPI bus multiplexing
Date: Tue,  4 Feb 2020 16:28:36 +1300	[thread overview]
Message-ID: <20200204032838.20739-1-chris.packham@alliedtelesis.co.nz> (raw)

This is a revisit of two earlier efforts to add more complex mutliplexing to
SPI busses.

https://patchwork.kernel.org/patch/2706151/
https://patchwork.kernel.org/patch/10897255/

This version makes use of the general purpose mux controller which simplifies
things greatly.

One outstanding problem is the need for the spi-max-frequency on the mux
device. This is not used for anything and is just needed to satisfy the spi
driver infrastructure which expects all spi devices to have this property.

Chris Packham (2):
  dt-bindings: spi: Document binding for generic SPI multiplexer
  spi: Add generic SPI multiplexer

 .../devicetree/bindings/spi/spi-mux.yaml      |  89 +++++++++
 drivers/spi/Kconfig                           |  11 ++
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-mux.c                         | 187 ++++++++++++++++++
 4 files changed, 288 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-mux.yaml
 create mode 100644 drivers/spi/spi-mux.c

-- 
2.25.0

             reply	other threads:[~2020-02-04  3:28 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-04  3:28 Chris Packham [this message]
2020-02-04  3:28 ` [PATCH v5 0/2] SPI bus multiplexing Chris Packham
2020-02-04  3:28 ` [PATCH v5 1/2] dt-bindings: spi: Document binding for generic SPI multiplexer Chris Packham
2020-02-04  3:28   ` Chris Packham
2020-02-12 23:58   ` Applied "dt-bindings: spi: Document binding for generic SPI multiplexer" to the spi tree Mark Brown
2020-02-12 23:58     ` Mark Brown
2020-02-04  3:28 ` [PATCH v5 2/2] spi: Add generic SPI multiplexer Chris Packham
2020-02-04 11:10   ` Andy Shevchenko
2020-02-12 23:58   ` Applied "spi: Add generic SPI multiplexer" to the spi tree Mark Brown
2020-02-12 23:58     ` Mark Brown
2020-11-13 15:46   ` [PATCH v5 2/2] spi: Add generic SPI multiplexer Nicolas Saenz Julienne
2020-11-17  0:08     ` Chris Packham
2020-11-20 16:18       ` Nicolas Saenz Julienne

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