| Commit message (Collapse) | Author | Age | Files | Lines |
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Add missing error handling for spi_new_device().
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The 'config DRIVER_SPI_MXS' section is already under 'if SPI'
so 'depends on SPI' is unneeded.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Some of the i.MXs drivers can be build tested even if building for other
platforms. Support adding a future COMPILE_TEST dependency to some of
these drivers by explicitly having their Kconfig symbol select STMP_DEVICE
if the driver calls stmp_reset_block.
This has not been necessary for the normal build, because the ARCH
symbols for the IMX23 and IMX28 already selected STMP_DEVICE.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The fsl-dspi is found on Freescale Vybrid, Coldfire and Layerscape SoCs.
This adds the driver based on the Linux driver as of v5.5. Coldfire
support has been dropped as it's rather obsolete. Vybrid support has
been dropped because it needs the DMA engine support we do not have in
barebox. What's left is support for Layerscape where this driver has
been tested on.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds __spi_validate() to validate spi messages. This function is a
stripped down version from the Kernel. The motivation for adding this
was to fill in xfer->bits_per_word from spi->bits_per_word so that a
spi bus driver can use the former.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the driver for the QSPI controller found on
the Xilinx Zynq SoCs.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Fixes: 812a9ddcdf21 (spi: Generalize SPI "master" to "controller")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds support for the Atmel quadspi device. Ported from Linux-5.2.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Use the potentially endianness-changing readl, writel and siblings
directly. They looks prettier and are the correct thing to do, as
even if the CPU is in big-endian mode, the peripherals are little-endian.
Unlike Linux, barebox readl,writel are the same Linux'
{readl,writel}_relaxed (they don't imply memory barriers)
and thus there shouldn't be any functional change.
Patch was generated by a mass search and replace. I looked it over,
adjust some whitespace and further verified by reviewing the output of
git diff HEAD~1 --word-diff | \
perl -pe 's/\[-(.*?)__raw_/{+$1/; s/-\]\{\+/+}{+/;' \
-e 's/(\{\+.*?\+\})\1/__ALL_IS_WELL__/' | grep '+}{+'
which filters out the common case of lines where a single
__raw_{readT,writeT} had its __raw_ prefix stripped without any
further changes.
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Tested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The dependency list for the Freescale QSPI controller doesn't match
the SoCs the hardware is in at all. Remove the dependency entirely as
the driver builds on all machines.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This is based on the Linux v5.1-rc1 driver introduced with the commit:
commit 84d043185dbe0d1b4f6db575bd91c834d37e2f78
Refs: v5.0-rc1-1-g84d043185dbe
Author: Frieder Schrempf <frieder.schrempf@kontron.de>
AuthorDate: Mon Jan 7 09:29:47 2019 +0000
Commit: Mark Brown <broonie@kernel.org>
CommitDate: Mon Jan 7 16:56:24 2019 +0000
spi: Add a driver for the Freescale/NXP QuadSPI controller
This driver is derived from the SPI NOR driver at
mtd/spi-nor/fsl-quadspi.c. It uses the new SPI memory interface
of the SPI framework to issue flash memory operations to up to
four connected flash chips (2 buses with 2 CS each).
The controller does not support generic SPI messages.
This patch also disables the build of the "old" driver and reuses
its Kconfig option CONFIG_SPI_FSL_QUADSPI to replace it.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Han Xu <han.xu@nxp.com>
Reviewed-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Tested-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Tested-by: Han Xu <han.xu@nxp.com>
Reviewed-by: Boris Brezillon <bbrezillon@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Sync with Linux v5.1-rc1.
This is the barebox adoption of the commit
commit c36ff266dc82f4ae797a6f3513c6ffa344f7f1c7
Author: Boris Brezillon <boris.brezillon@bootlin.com>
Date: Thu Apr 26 18:18:14 2018 +0200
spi: Extend the core to ease integration of SPI memory controllers
Some controllers are exposing high-level interfaces to access various
kind of SPI memories. Unfortunately they do not fit in the current
spi_controller model and usually have drivers placed in
drivers/mtd/spi-nor which are only supporting SPI NORs and not SPI
memories in general.
This is an attempt at defining a SPI memory interface which works for
all kinds of SPI memories (NORs, NANDs, SRAMs).
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Tested-by: Frieder Schrempf <frieder.schrempf@exceet.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Sync with Linux v5.1-rc1.
This is the barebox adoption of the commit
commit 8caab75fd2c2a92667cbb1cd315720bede3feaa9
Author: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Tue Jun 13 13:23:52 2017 +0200
spi: Generalize SPI "master" to "controller"
Now struct spi_master is used for both SPI master and slave controllers,
it makes sense to rename it to struct spi_controller, and replace
"master" by "controller" where appropriate.
For now this conversion is done for SPI core infrastructure only.
Wrappers are provided for backwards compatibility, until all SPI drivers
have been converted.
Noteworthy details:
- SPI_MASTER_GPIO_SS is retained, as it only makes sense for SPI
master controllers,
- spi_busnum_to_master() is retained, as it looks up masters only,
- A new field spi_device.controller is added, but spi_device.master is
retained for compatibility (both are always initialized by
spi_alloc_device()),
- spi_flash_read() is used by SPI masters only.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Introduce dev_set_name() in order to hide implementation details of
setting device's name so it'd be easier to change it.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Remove at91_sys_read() and at91_sys_write() since these are no longer
used. This makes mach/io.h empty so remove that aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Select DRIVER_SPI_IMX_2_3 for i.MX8MQ since that is the variant that's
being used
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Select DRIVER_SPI_IMX_2_3 for i.MX7 since that is the variant that's
being used.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Some SoCs (e. g. i.MX7) do not enable this clock by default, so add
code to take care of that in the driver.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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A call of xchg_single will issue the transfer of 24 data bits with a given
maximum frequency. Since there exist some i.MX based boards with
spi-max-frequency = <100000>, change the xchg_single timeout to still
support those boards.
Fixes: 1439cdf7c6fc ("spi: imx: add timeout to xchg_single")
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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If there is a problem STAT_RR might never be set which results in an endless loop.
Break out after 10 µs with -ETIMEOUT instead.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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This makes it possible that the xchg_single callbacks return an error code that
is then passed to the caller of spi_transfer. There is no change in behaviour
intended as up to now the callbacks always return 0.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Use of_property_read_bool where boolean properties are read.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Use VERSION register instead of CPU type to determine IP block's version
and capabilities. This what corresponding Linux kernel driver does.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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On AT91 GPIOs default to being inputs, so we need to explicitly
configure CS gpio to being an output.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add driver for DSPI - SPI IP core found on various Freescale/NXP
products (including Vybrid/VF610).
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This looks nicer and reduces the time to transfer 40 MB at 50 MHz from
203 seconds to 87 seconds.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This optimization reduced the time to transfer 40 MB at 50 MHz from
214 seconds to 203 seconds.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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- Initialize pdiv in declaration
- fix format specifiers
- simplify range check, pdiv can never be > 7
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The function used a separate variable to hold the value calculated and
only used it for range checking but then didn't use it.
This fixes calculation for slow baud rate that require a divider > 15.
Additionally fix the rounding.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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When a message transfer fails no further messages are transferred, but
the error value was not propagated to the caller.
Fixes: 5db1a578d6ed ("spi: add Marvell MVEBU SoC SPI driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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In rare cases the controller is does not work right after probe. When
this happens the registers show that the TXFIFO contains words, but
the transfer is never started. We observed that on some boards which
boot from SPI NOR. The xload SPI code leaves the controller enabled,
so the SPI controller is enabled during probe(). Disabling it before
usage (and thus resetting it) helps. We haven't found out why exactly
this happens.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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There are two problems that made the driver choose the wrong baudrate
calculation algorithm:
a) The compatible used on 370/XP isn't marvell,armada-370-xp-spi but
marvell,armada-370-spi or marvell,armada-xp-spi respectively.
b) The probe function uses
match = of_match_node(mvebu_spi_dt_ids, dev->device_node);
to determine the right algorithm. As the devices are also compatible
to marvell,orion-spi and this comes first in mvebu_spi_dt_ids[]
it's always the older Orion algorithm that is used.
This patch fixes both problems.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The mvebu socs support up to 8 chip selects. Make use of them.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The i.MX50 SOC includes one ESDHCv3, three ESDHCv2, one cspi and
two ecspi instances which are supported by existing drivers.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The i.MX31 SPI interface was refered by freescale as spi_ver_0_4 in one
of their older vendor extended linux releases. spi_ver_0_4 differs only
in minor aspects to spi_ver_0_7 (i.MX35) which is already supported by
barebox.
Regarding barebox, the differences boil down to the location and length
of the CHIP SELECT and BIT COUNT/BURST LENGTH elements of CONREG. The
spi_ver_0_4 variant is limited to single word bursts with a maximum of
32 bits_per_word.
Add support for the i.MX31 SPI interface to the barebox spi_ver_0_7
implementation.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The "fsl,spi-num-chipselects" property will be marked obsolete soon.
This patch updates the driver to be ready to such changes.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Du Huanpeng <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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