The spi on rv1108 is the same as other rockchip based
socs, add compatible string for it.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add support for MSIOF in r8a7795 (R-Car H3).
Due to a hardware erratum on R-Car H3 ES1.x, this is only supported on
ES2.0 and later.
No driver update is needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
ECSPI contorller for iMX53 and iMX6 has few hardware issues
comparing to iMX51.
The change add possibility to detect which controller is used
to apply possible workaround and limitations.
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch aligns example with the optional property description,
removes status and replace spidev unvalid compatible with
Aarvark SPI Host Adapter one.
In slave mode, Aardvark SPI Host Adapter requires 4ms delay
between the end of byte n and the start of byte n+1, hence the
use of the optional property st,spi-midi-ns.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch replaces st,stm32-spi compatible with st,stm32h7-spi SoC
specific compatible and updates the example accondingly.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds the documentation of device tree bindings
for the STM32 SPI controller.
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add slave mode support to the MSIOF driver, in both PIO and DMA mode.
For now this only supports the transmission of messages with a size
that is known in advance.
Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
[geert: Timeout handling cleanup, spi core integration, cancellation,
rewording]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add the SPICC (SPI Communications Controller) bindings variant.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch implements consideration of the SPI_READY mode flag as
defined in spi.h. It extends the device tree bindings to support
the values defined by the reference manual for the DRCTL field.
Thus supporting edge-triggered and level-triggered bursts.
Signed-off-by: Leif Middelschulte <Leif.Middelschulte@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The property "pl022,com-mode" can only assume one of the values of
the enum ssp_mode, defined in include/linux/amba/pl022.h
List the possible numeric values and report the associated meaning.
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The properties "pl022,hierarchy" and "pl022,slave-tx-disable" were
initially proposed till patch V4 [1] but then discarded in V5 [2]
when the patch set was taken over by another developer, as
explained in patch history in [3].
The above properties never landed in mainline code but were then
listed in the binding example by a following commit dc715452e9
("spi: pl022: use generic DMA slave configuration if possible")
and later on they were copy-paste in some board's DT.
Remove the nonexistent properties from the example.
Also remove a spaces-only line at the end of the file.
[1] https://lkml.org/lkml/2012/7/9/421
[2] https://lkml.org/lkml/2012/8/21/427
[3] https://lkml.org/lkml/2012/8/21/436
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add documentation for the bindings of the high speed SPI controller found
on newer bcm63xx SoCs.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add documentation for the bindings of the low speed SPI controller found
on most bcm63xx SoCs.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This driver supports the Lantiq SSC SPI controller in master
mode. This controller is found on Intel (former Lantiq) SoCs like
the Danube, Falcon, xRX200, xRX300.
The hardware uses two hardware FIFOs one for received and one for
transferred bytes. When the driver writes data into the transmit FIFO
the complete word is taken from the FIFO into a shift register. The
data from this shift register is then written to the wire. This driver
uses the interrupts signaling the status of the FIFOs and not the shift
register. It is also possible to use the interrupts for the shift
register, but they will send a signal after every word. When using the
interrupts for the shift register we get a signal when the last word is
written into the shift register and not when it is written to the wire.
After all FIFOs are empty the driver busy waits till the hardware is
not busy any more and returns the transfer status.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
In the case of Renesas R-Car hardware we know that there are generations of
SoCs, e.g. Gen 2 and Gen 3. But beyond that it's not clear what the
relationship between IP blocks might be. For example, I believe that
r8a7790 is older than r8a7791 but that doesn't imply that the latter is a
descendant of the former or vice versa.
We can, however, by examining the documentation and behaviour of the
hardware at run-time observe that the current driver implementation appears
to be compatible with the IP blocks on SoCs within a given generation.
For the above reasons and convenience when enabling new SoCs a
per-generation fallback compatibility string scheme is being adopted for
drivers for Renesas SoCs.
Also:
* Deprecate renesas,sh-msiof. It seems poorly named as it is only
compatible with SH-Mobile. It also appears unused in mainline.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
MSIOF in R-Car M3-W (r8a7796) is handled fine by the existing driver.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
H3 SPI has same architecture as A31 except FIFO capacity.
To configure the buffer size separately, compatible property should be
different. Optional DMA specifiers and example are added.
Signed-off-by: Milo Kim <woogyom.kim@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Added device tree bindings documentation for BRCMSTB, NSP, NS2 iProc
SoCs supported by spi-bcm-qspi, spi-brcmstb-qspi and spi-iproc-qspi driver.
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds missing commas to the spi-bus documentation of the
cs-gpio lines.
The device tree compiler fails if chip select lines are not
comma-separated. Fix the erroneous documentation by adding missing
commas.
Signed-off-by: Guenther Wutz <info@gunibert.de>
Signed-off-by: Ralf Ramsauer <ralf@ramses-pyramidenbau.de>
Signed-off-by: Rob Herring <robh@kernel.org>
The samsung,exynos5433-spi has some peculiarities that bring the
need of creating a new compatible in the binding.
One of those is the 3-clocks controller management where the spi
is fed with three clocks: "spi", "busclkN" and "ioclk".
By adding the exynos5433-spi, we deprecate the exynos7 compatible
and discourage its use.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Michael Turquette <mturquette@baylibre.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This documents the binding used by Alexander Shiyan's DT support for
the clps711x SPI controller.
I've left the file name to match the ARM platform port name "clps711x"
for consistency with the other bindings, even though the compatible
string refers to the later ep7309 chip.
Linux no longer supports the old clps711x and ep72xx product lines,
but we still use the name. The entire family is now discontinued
by the manufacturer.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
When the CS line is not connected, it is not needed to enable or
disable the chip selection functionality from the s3c64xx
devices in order to perform a transfer.
Set the CS controller logically always enabled already during
initialization (by writing '0' in the S3C64XX_SPI_SLAVE_SEL
register) and never disable it.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch fix spelling typos found in
Documentation/devicetree/bingings/spi.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
- Add missing verbs and periods,
- Add spaces before opening parentheses,
- Align list layout,
- Correct grammar,
- Move "cs-gpios" from the required to the optional properties
section,
- Remove spaces before tabs.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
