There is no way as of now to have a parent or bus defining properties
for child nodes. For now, avoid it in the example to silence warnings on
dt_schema_check. We can figure out how to deal with actual dts files
later.
[p.yadav@ti.com: Fix how compatible is defined, make reset optional, fix
minor typos, remove subnode properties in example, update commit
message.]
Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@linux.intel.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210326130034.15231-5-p.yadav@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The SPI core looks up GPIO lines from the device tree,
so let's stop trying to do that on our own and rely
on the core to do this for us.
In addition to the GPIO line we also need to keep
track of the chip select index separately, as the native
chip select needs this index. The driver was reusing
the same GPIO array for native chip select indices,
so keep this in a separate state variable instead.
The facility to pass in custom GPIO lines from the
platform data can go, because even if we do have
out-of-tree code that want to use platform data, they
can soon pass in GPIOs using machine GPIO descriptor
tables which will be available after the next step
when we convert the driver to using GPIO descriptors.
The implicit inclusion of <linux/of.h> is made
explicit as we no longer need to include <linux/of_gpio.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210330164907.2346010-2-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
When using the device tree, which must be considered normal
these days, in order to get some kind of normal functionality
out of the PL022 users have to actively go into the device
tree and edit the SPI clients like this:
spi {
compatible = "arm,pl022";
num-cs = <1>;
cs-gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
foo@0 {
compatible = "foo";
reg = <0>;
pl022,interface = <0>;
pl022,com-mode = <0>;
};
};
Otherwise the PL022 will come up as a client (slave) and
using polling mode. This is quite unintuitive and many users
will get their device trees wrong.
Alter the defaults such that we come up in host mode
(master) and use interrupt mode.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210328121530.1983081-1-linus.walleij@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
add compatible entry in nxp_fspi driver for imx8mp
@Shawn: If this series is accepted, can you apply the DTS patches from
series v2?
http://lists.infradead.org/pipermail/linux-arm-kernel/2021-March/643292.htmlhttp://lists.infradead.org/pipermail/linux-arm-kernel/2021-March/643293.html
Changes in v4:
rebased against:
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
a43e89624baea ("Merge remote-tracking branch 'spi/for-5.13' into spi-next")
Changes in v3:
- seperate spi changes from series:
http://lists.infradead.org/pipermail/linux-arm-kernel/2021-March/643289.html
into own series as Kuldeep suggested and rebased against
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
144c79ef33 ("Merge tag 'perf-tools-fixes-for-v5.12-2020-03-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux")
- no changes, rebased against
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
144c79ef33 Merge tag 'perf-tools-fixes-for-v5.12-2020-03-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Changes in v2:
- work in comments from Marco
add own compatible entry for imx8mp
Heiko Schocher (2):
spi: fspi: enable fspi driver for on imx8mp
dt-bindings: spi: add compatible entry for imx8mp in FlexSPI
controller
Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt | 1 +
drivers/spi/spi-nxp-fspi.c | 1 +
2 files changed, 2 insertions(+)
--
2.29.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.orghttp://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Fix checkpatch errors:
ERROR: code indent should use tabs where possible
#484: FILE: spi-rockchip.c:484:
+^I | CR0_BHT_8BIT << CR0_BHT_OFFSET$
ERROR: code indent should use tabs where possible
#485: FILE: spi-rockchip.c:485:
+^I | CR0_SSD_ONE << CR0_SSD_OFFSET$
ERROR: code indent should use tabs where possible
#486: FILE: spi-rockchip.c:486:
+^I | CR0_EM_BIG << CR0_EM_OFFSET;$
Signed-off-by: Jay Fang <f.fangjian@huawei.com>
Link: https://lore.kernel.org/r/1616566602-13894-11-git-send-email-f.fangjian@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
stm32_spi_remove() accesses the driver's private data after calling
spi_unregister_master() even though that function releases the last
reference on the spi_master and thereby frees the private data.
Fix by switching over to the new devm_spi_alloc_master() helper which
keeps the private data accessible until the driver has unbound.
Fixes: 8d559a64f0 ("spi: stm32: drop devres version of spi_register_master")
Reported-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1616052290-10887-1-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Hi,
The older API used to supply additional device properties for the
devices - so mainly the function device_add_properties() - is going to
be removed. The reason why the API will be removed is because it gives
false impression that the properties are assigned directly to the
devices, which has actually never been the case - the properties have
always been assigned to a software fwnode which was then just directly
linked with the device when the old API was used. By only accepting
device properties instead of complete software nodes, the subsystems
remove any change of taking advantage of the other features the
software nodes have.
The change that is required from the spi subsystem and the drivers is
trivial. Basically only the "properties" member in struct
spi_board_info, which was a pointer to struct property_entry, is
replaced with a pointer to a complete software node.
thanks,
Heikki Krogerus (4):
spi: Add support for software nodes
ARM: pxa: icontrol: Constify the software node
ARM: pxa: zeus: Constify the software node
spi: Remove support for dangling device properties
arch/arm/mach-pxa/icontrol.c | 12 ++++++++----
arch/arm/mach-pxa/zeus.c | 6 +++++-
drivers/spi/spi.c | 21 ++++++---------------
include/linux/spi/spi.h | 7 +++----
4 files changed, 22 insertions(+), 24 deletions(-)
--
2.30.1
base-commit: a38fd87484
A while back I started the introduction of the 'spi_delay' data type:
https://lore.kernel.org/linux-spi/20190926105147.7839-1-alexandru.ardelean@analog.com/
Users of the 'delay_usecs' were removed from drivers.
Now it's time to remove the 'delay_usecs' from the SPI subsystem and use
only the 'delay' field.
This changeset adapts all SPI drivers to do without 'delay_usecs'.
Additionally, for greybus we need to adapt it to use the 'delay' in
nano-seconds and convert it to micro-seconds.
Alexandru Ardelean (10):
spi: spi-axi-spi-engine: remove usage of delay_usecs
spi: bcm63xx-spi: don't check 'delay_usecs' field
spi: spi-bcm-qspi: replace 'delay_usecs' with 'delay.value' check
spi: spi-sh: replace 'delay_usecs' with 'delay.value' in pr_debug
spi: spi-tegra20-flash: don't check 'delay_usecs' field for spi
transfer
staging: greybus: spilib: use 'spi_delay_to_ns' for getting xfer delay
spi: spi-falcon: remove check for 'delay_usecs'
spi: fsl-espi: remove usage of 'delay_usecs' field
spi: core: remove 'delay_usecs' field from spi_transfer
spi: docs: update info about 'delay_usecs'
Documentation/spi/spi-summary.rst | 7 +++++--
drivers/spi/spi-axi-spi-engine.c | 12 ++++--------
drivers/spi/spi-bcm-qspi.c | 2 +-
drivers/spi/spi-bcm63xx.c | 2 +-
drivers/spi/spi-falcon.c | 2 +-
drivers/spi/spi-fsl-espi.c | 17 +++++------------
drivers/spi/spi-sh.c | 4 ++--
drivers/spi/spi-tegra20-sflash.c | 3 +--
drivers/spi/spi.c | 1 -
drivers/staging/greybus/spilib.c | 5 ++++-
include/linux/spi/spi.h | 12 ------------
11 files changed, 24 insertions(+), 43 deletions(-)
--
2.29.2
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devel mailing list
devel@linuxdriverproject.orghttp://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
The intent is the removal of the 'delay_usecs' field from the
spi_transfer struct, as there is a 'delay' field that does the same
thing.
The spi_delay_to_ns() can be used to get the transfer delay. It works by
using the 'delay_usecs' field first (if it is non-zero), and finally
uses the 'delay' field.
Since the 'delay_usecs' field is going away, this change makes use of the
spi_delay_to_ns() function. This also means dividing the return value of
the function by 1000, to convert it to microseconds.
To prevent any potential faults when converting to microseconds and since
the result of spi_delay_to_ns() is int, the delay is being computed in 32
bits and then clamped between 0 & U16_MAX.
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210308145502.1075689-7-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Introduce module_parport_driver() and use it.
Greg or Mark, since we have this series tagged, can somebody of you pick it up?
Changelog v3:
- added tag on patch 1 (Sudip)
- Cc'ed to Greg
Andy Shevchenko (3):
parport: Introduce module_parport_driver() helper macro
spi: butterfly: Switch to use module_parport_driver()
spi: lm70llp: Switch to use module_parport_driver()
drivers/spi/spi-butterfly.c | 13 +------------
drivers/spi/spi-lm70llp.c | 13 +------------
include/linux/parport.h | 12 +++++++++++-
3 files changed, 13 insertions(+), 25 deletions(-)
base-commit: fe07bfda2f
--
2.30.1
