The mt7621 spi controller supports continuous generic half-duplex spi
transaction. There is no need to cache xfer data at all.
To achieve this goal, the OPADDR register must be used as the first data
to be sent. And follows the eight generic DIDO registers. But one thing
different between OPADDR and DIDO registers is OPADDR has a reversed byte
order.
With this patch, any amount of data can be read/written in a single xfer
function call.
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This patch lets the spi driver to use clock provided by the clk driver
since the new clk-mt7628 driver provides accurate sys clock frequency.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Disable and free clock when remove driver.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
SPI_SUNXI driver is fully dm-aware and the Allwinner
architecture kconfig would have logic to enable the
DM_SPI. So, select default spi sunxi driver for
sunxi architecture.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
We need distinguish the following two situations in various SPI APIs:
- given chip select num is invalid
- given chip select num is valid, but no device is attached
Currently -ENODEV is returned for both cases.
For the first case, it's more reasonable to return -EINVAL instead of
-ENODEV for invalid chip select numbers.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
If an SPI controller driver does not implement ops->cs_info, that
probably means any chip select number could be valid, hence let's
return 0 for spi_cs_info().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
When CONFIG_OF_PRIOR_STAGE is enabled, this workaround was needed
before device_bind_common assigned request numbers sequentially in the
absence of aliases.
Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
The Broadcom ARM implementations do not yet have a clock framework so
one can use a fixed clock as the root clock of the hsspi block. The
fixed clock does not have an "enable" routine, since it's always
enabled. So when we hit this issue, getting an ENOSYS return, do not
bail but continue initialization.
Similarly the block might already have been out of reset, say, when
we are booting from a SPI device. So if the reset signal is not configured
in the device tree, do not bail out and instead skip deasserting the reset.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Make the driver compatible with both big and little endian SOCs.
Replace big-endian calls with their raw equivalents, expect for
writing the command to FIFO. That still has to be in big-endian
format.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This IP exists in both MIPS and ARM cores, so we also
allow to use this driver on bcm6858 and bcm63158.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
The write data size can be overwritten by writing to the IDATSZ
field of IPCR register. Since the driver always updates the IDATSZ
in page program operation. Set the LUT data size to 0 to align
the codes with iMX.
Signed-off-by: Ye Li <ye.li@nxp.com>
On latest iMX platforms like iMX7D/iMX6UL/iMX8MQ, the QSPI controller
is updated to have TDH field in FLSHCR register. According to reference
manual, this TDH must be set to 1 when DDR_EN is set. Otherwise, the TX
DDR delay logic won't be enabled.
Another issue in DDR mode is the MCR register will be overwritten in
every read/write/erase operation. This causes DDR_EN been cleared while
TDH=1, then no clk2x output for TX data shift and all operations will
fail.
Signed-off-by: Ye Li <ye.li@nxp.com>
After this patch the mxs_spi.c DM/DTS driver can be used at early SPL to
read payload from SPI-NOR memories.
It was necessary to adjust its name to 'fsl_imx_2{38}_spi' to match
requirements for SPL_OF_PLATDATA usage.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Without this change the DM/DTS version of mxs_spi driver doesn't reset the
SPI IP block in probe.
As a result this driver (when used solely on U-Boot proper) relies on reset
performed by mxs spi driver in SPL.
In the use case where eMMC is used in SPL as a boot primary device, the
mxs_reset_block() is not called at all and DM/DTS aware SPI driver in
U-Boot proper is malfunctioning.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This change initializes proper member of struct driver -
platdata_auto_alloc_size instead of priv_auto_alloc_size, which is setup
twice.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Add support for SPI synchronous write followed by read,
this is common interface call from spi-nor to spi drivers.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Adam Ford <aford173@gmail.com> #da850-evm
MXS_SPI driver now partially converted into driver-model,
so unmark the DEPRECATED option for the same.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
[jagan: update the commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
In case spi_get_bus_and_cs callback is used, spi bus is first probed
then slave devices are probed. To avoid a data abort in soft_spi probe
function, we need to check that (slave != NULL).
If slave is NULL, cs_flags and clk_flags will be initialized with
respectively GPIOD_ACTIVE_LOW and 0.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
The prescaler value computation can yield wrong result if given 0x1f at
the beginning: the value is computed to be 0x20, but the maximum value
the register can hold 0x1f, so the actual stored value in this case is
0, which is obviously wrong.
Set the upper bound of the value to 0x1f with the min macro.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
With the introduction of the new spi-mem model operations changed
slightly. The new spi-mem operations make things a bit easier to
handle for ich-spi flash interface. This patch converts the ich-spi
driver by using spi-mem operations.
Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested on Intel CrownBay and MinnowMax
Tested-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: fix compiler warnings when building the driver for 64-bit]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Since u-boot has added the spi-mem framework and replaced
the spi-nor framework, the mtk_qspi is no longer compatible
with the new spi-nor driver.
Remove this driver along with replacing config item
with new mtk spi-nor driver.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
[jagan: squash related changes and update commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This patch adds SiFive SPI driver. The driver is 100% DM driver
and it determines input clock using clk framework.
The SiFive SPI block is found on SiFive FU540 SOC and is used to
access flash and MMC devices on SiFive Unleashed board.
This driver implementation is inspired from the Linux SiFive SPI
driver available in Linux-5.2 or higher and SiFive FSBL sources.
Signed-off-by: Bhargav Shah <bhargavshah1988@gmail.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Use readl_poll_timeout instead of explicit calculation
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
During QSPI reads, current is_controller_busy function sporadically
fails with -ETIMEDOUT due to fixed number of 5 test loops. Using
timer functions to wait 1000 us instead will fix this.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
When slave drivers don't set the max_read_size, the spi-mem should directly
use data.nbytes and not limit to any size. But current logic will limit to
the max_write_size.
Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This patch solves the following warnings:
drivers/spi/stm32_spi.c: In function 'stm32_spi_write_txfifo':
drivers/spi/stm32_spi.c:116:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (priv->tx_len >= sizeof(u32) &&
^~
drivers/spi/stm32_spi.c:122:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
} else if (priv->tx_len >= sizeof(u16) &&
^~
drivers/spi/stm32_spi.c: In function 'stm32_spi_read_rxfifo':
drivers/spi/stm32_spi.c:150:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
(priv->rx_len >= sizeof(u32) || (sr & SPI_SR_RXWNE))) {
^~
drivers/spi/stm32_spi.c:156:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
(priv->rx_len >= sizeof(u16) ||
^~
drivers/core/simple-bus.c:15:12: warning: no previous prototype for 'simple_bus_translate' [-Wmissing-prototypes]
fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr)
^~~~~~~~~~~~~~~~~~~~
drivers/spi/stm32_spi.c: In function 'stm32_spi_set_speed':
drivers/spi/stm32_spi.c:335:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
div > STM32_MBR_DIV_MAX)
^
drivers/spi/stm32_spi.c:344:19: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
if ((mbrdiv - 1) < 0)
^
drivers/spi/stm32_spi.c: In function 'stm32_spi_probe':
drivers/spi/stm32_spi.c:531:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < ARRAY_SIZE(priv->cs_gpios); i++) {
^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This patch solves warnings detected by setting W=1 when building.
Warnings type detected:
- [-Wtype-limits]
- [-Wsign-compare]
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
- Minor tracing and PCI improvements
- Various other minor fixes
- Conversion of patman, dtoc and binman to support Python 3
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Merge tag 'dm-pull-9jul19-take2' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm
- Sandbox improvements including .dts refactor
- Minor tracing and PCI improvements
- Various other minor fixes
- Conversion of patman, dtoc and binman to support Python 3
- SPL SATA enhancements to allow booting from RAW SATA device
needed for Clearfog (Baruch)
- Enable SATA booting on Clearfog (Baruch)
- Misc changes to Turris Omnia (Marek)
- Enable CMD_BOOTZ and increase SYS_BOOTM_LEN on crs305-1g-4s
(Luka)
- Enable FIT support for db-xc3-24g4xg (Chris)
- Enable DM_SPI on Keymile Kirkwood board with necessary changes
for this (Pascal)
- Set 38x and 39x AVS on lower frequency (Baruch)
KM Kirkwood boards now implement the driver model for its SPI flash
interface. Therefore, the old board specific claim and release functions
can be deleted. The preprocessor definition CONFIG_SYS_KW_SPI_MPP is yet
unused as well. All its appearances and dependencies are removed in the
kirkwood_spi driver, header files and finally the configuration whitelist.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
The weak functions, known from the legacy code, are added to the DM part
as well. For this purpose, the release operation first needs to be
implemented. KM Kirkwood boards will overwrite those weak functions to
change the MPP configuration when claiming/releasing the bus, because the
hardware pins are shared between the SPI NOR and NAND devices.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
In general we should avoid calling malloc() and free() repeatedly in
U-Boot lest we turn it into tianocore. In SPL this can make SPI flash
unusable since free() is often a nop and allocation space is limited.
In any case, these seems no need for malloc() since the number of bytes
is very small, perhaps less than 8.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: d13f5b254a (spi: Extend the core to ease integration of SPI
memory controllers)
Since the SPI nor conversion, 'sf probe' does not work on sandbox. Fix
this by using the expected compatible string in the flash node.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: cd35365762 (mtd: sf_probe: remove spi-flash compatible)
Backport the driver from linux v5.1-rc5 and adapt it for u-boot.
Tested on sama5d2_xplained Rev B with mx25l25635e spi-nor flash.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Mark LPC32XX_SSP as DEPRECATED, this so the resulting build shows
warning for deprecated configuration enabled and associated code
will remove in v2019.07 release.
Cc: Albert ARIBAUD <albert.aribaud@3adev.fr>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Sylvain Lemieux <slemieux@tycoint.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
Mark SOFT_SPI as DEPRECATED, this so the resulting build shows
warning for deprecated configuration enabled and associated code
will remove in v2019.07 release.
Cc: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
Mark SH_SPI as DEPRECATED, this so the resulting build shows
warning for a deprecated configuration enabled and associated code
will remove in v2019.07 release.
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
Mark MXS_SPI as DEPRECATED, this so the resulting build shows
warning for broken configuration enabled and associated code
will remove in v2019.07 release.
Cc: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
- Add saveenv support for STM32MP1
- Add STM32MP1 Avenger96 board support
- Add SPI driver suport for STM32MP1
- Add watchdog support for STM32MP1
- Update power supply check via USB TYPE-C for STM32MP1 discovery board
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Merge tag 'u-boot-stm32-20190606' of https://github.com/pchotard/u-boot
- Add Ethernet support for STM32MP1
- Add saveenv support for STM32MP1
- Add STM32MP1 Avenger96 board support
- Add SPI driver suport for STM32MP1
- Add watchdog support for STM32MP1
- Update power supply check via USB TYPE-C for STM32MP1 discovery board
in mxc_spi_probe() plat and mxcs pointer are created:
struct mxc_spi_slave *plat = bus->platdata;
struct mxc_spi_slave *mxcs = dev_get_platdata(bus);
which have the same value. Remove plat pointer.
Signed-off-by: Heiko Schocher <hs@denx.de>
Support DM in the MPC8xxx SPI driver, and remove the legacy SPI
interface.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
The comment before the transmission loop in conjunction with the
definition of SPI_TIMEOUT as 1000 implies that the loop is supposed to
have a timeout value of 1000 ms. But since there is no mdelay(1) or
similar in the loop body, the loop just runs 1000 times, without regard
for the time elapsed.
To correct this, use the standard get_timer functionality to properly
time out the loop after 1000 ms.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Decreasing the bit length and increasing the write data pointer should
be done when there are more than 32 bit of data, not 16 bit.
This did not produce incorrect behavior, because the only time where the
two checks produce different outcomes is the case of 16 < bitlen < 32,
and in this case the subsequent transmission is the last one regardless,
hence the additional bit length decrease and write data pointer increase
has no effect anyway.
Still, the correct check is the check for "bitlen > 32", so correct this
behavior.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Minize the time the adapter is disabled (via SPI_MODE_EN
clearing/setting) to just the character length setting, and only set up
the temporary data writing variable right before we need it, so there is
a more clear distinction between setting up the SPI adapter, and setting
up the data to be written.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Instead of having a table right before the code implementing the length
setting for documentation, have inline comments for the if branches
actually implementing the length setting described table's entries
(which is readable thanks to the set_char_len function).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
The variable "char_size" holds the number of bits to be transferred in
the current loop iteration. A better name would be "xfer_bitlen", which
we rename this variable to.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Introduce the to_prescale_mod and set_char_len inline functions to make
the code more readable.
Note that the added "if (bitlen > 16)" check does not change the
semantics of the current code, and hence only preserves the current
error (this will be fixed in a later patch in the series).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
The transmission loop starts with setting some variables, which are only
used inside the loop. Reduce the scope to the loop to make the
declaration and initialization of these variables coincide.
In the case of char_size this also always initializes the variable
immediately with the final value actually used in the loop (instead of
the placeholder value 32).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
We do nothing in the loop if the "not empty" event was not detected. To
simplify the logic, check if this is the case, and skip the execution of
the loop early to reduce the nesting level and flag checking.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Get rid of the is_read variable, and just keep the state of the "not
empty" and "not full" events in two boolean variables within the loop
body.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Instead of having a nested if block, just have two branches within the
overarching if block to eliminate one nesting level.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Accesses to the register map are currently done by directly reading and
writing the structure.
Switch to the appropriate IO accessors instead.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Replace pre-processor defines with proper enums, and use the BIT macro
where applicable.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Replace the function name with a "%s" format string and the __func__
variable in debug statements (as proposed by checkpatch).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
There are three variables that have camel-case names, which is not the
preferred naming style.
Give those variables more compliant names instead.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
There are some comments on the same line as the code they document. Put
comments above the code lines they document, so the line length is not
unnecessarily increased.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
The function signatures in the driver are quite long as is. Use short
type names (uint etc.) to make them more readable.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Convert 'dw_spi_ofdata_to_platdata' to use 'dev_read_u32_default'
instead of 'fdtdec_get_int' and get rid of DECLARE_GLOBAL_DATA_PTR.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Convert 'cadence_spi_ofdata_to_platdata' to use dev_read_* functions to
read driver parameters and 'dev_read_first_subnode'/'ofnode_read_*' to
read flash (child node) parameters.
Tested on socfpga_socrates (socfpga gen5).
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Like clk_get_by_index, there is requirement for
clk_get_by_index_nodev. In this case to make common
code functionalities for dev and nodev, clk_get_by_index
is trying to get the index of clock by passing ofnode
instead of actual dev like current gpio uclass does.
In these scenarios with current order of include files
the atcspi200_spi driver is unable to find CONFIG_ENV_SIZE.
In file included from arch/nds32/include/asm/u-boot.h:24,
from include/dm/of.h:10,
from include/dm/ofnode.h:12,
from include/clk.h:11,
from drivers/spi/atcspi200_spi.c:9:
include/environment.h:145:19: error: 'CONFIG_ENV_SIZE'
undeclared here (not in a function); did you mean 'CONFIG_CMD_XIMG'?
#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
So, fix consists of changing the order of include files
in atcspi200_spi.c to include first common.h file.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Add ifdeffery to allow operation without the clock framework
enabled. This is required on RZ/A1, as it does not have clock
driver yet.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Ocelot
- mt7620: rename arch to more generic name mtmips
- mips: pass initrd addresses via DT as physical addresses
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Merge tag 'mips-pull-2019-05-03' of git://git.denx.de/u-boot-mips
- mscc: small fixes, enhance network support for Serval, Luton and Ocelot
- mt7620: rename arch to more generic name mtmips
- mips: pass initrd addresses via DT as physical addresses
Currently mach-mt7620 contains only support for mt7628. To avoid confusion,
rename mach-mt7620 to mach-mtmips, which means MediaTek MIPS platforms.
MT7620 and MT7628 should be distinguished by SOC_MT7620 and SOC_MT7628
because they do not share the same lowlevel codes.
Dependencies of four drivers are changed to SOC_MT7628 as these drivers
are only used by MT7628.
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common
header file path, so that we can get the correct path directly.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
To support unaligned output buffers (i.e. 'in' in the terminology of
the SPI framework), this change splits each 16bit FIFO element after
reading and writes them to memory in two 8bit transactions. With this
change, we can now always use the optimised mode for receive-only
transcations independent on the alignment of the target buffer.
Given that we'll run with caches on, the impact should be negligible:
as expected, this has no adverse impact on throughput if running with
a 960MHz LPLL configuration.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
The SPI controller's documentation (I only had access to the RK3399,
RK3368 and PX30 TRMs) specifies that, when operating in master-mode,
the controller will stop the SCLK to avoid RXFIFO overruns and TXFIFO
underruns. Looks like my worries that we'd need to support DMA-330
(aka PL330) to make any further progress were unfounded.
This adds a driver-data structure to capture hardware-specific
settings of individual controller instances (after all, we don't know
if all versions are well-behaved) and adds a 'master_manages_fifo'
flag to it. The first use of said flag is in the optimised
receive-only transfer-handler, which can now request 64Kframe
(i.e. 128KByte) bursts of data on each reprogramming of CTRLR1
(i.e. every time through the loop).
This improves throughput to 46.85MBit/s (a 94.65% bus-utilisation).
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
For the RK3399-Q7 we recommend storing SPL and u-boot.itb in the
on-module 32MBit (and sometimes even larger, if requested as part of a
configure-to-order configuration) SPI-NOR flash that is clocked for a
bitrate of 49.5MBit/s and connected in a single-IO configuration (the
RK3399 only supports single-IO for SPI).
Unfortunately, the existing SPI driver is excruciatingly slow at
reading out large chunks of data (in fact it is just as slow for small
chunks of data, but the overheads of the driver-framework make it less
noticeable): before this change, the throughput on a 4MB read from
SPI-NOR is 8.47MBit/s which equates a 17.11% bus-utilisation.
To improve on this, this commit adds an optimised receive-only
transfer (i.e.: out == NULL) handler that hooks into the main transfer
function and processes data in 16bit frames (utilising the full with
of each FIFO element). As of now, the receive-only handler requires
the in-buffer to be 16bit aligned. Any lingering data (i.e. either if
the in-buffer was not 16-bit aligned or if an odd number of bytes are
to be received) will be handled by the original 8bit reader/wirter.
Given that the SPI controller's documentation does not guarantuee any
interlocking between the RXFIFO and the master SCLK, the transfer loop
will be restarted for each chunk of 32 frames (i.e. 64 bytes).
With this new receive-only transfer handler, the throughput for a 4MB
read increases to 36.28MBit/s (i.e. 73.29% bus-utilisation): this is a
4x improvement over the baseline.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reported-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Series-Cc: Klaus Goger <klaus.goger@theobroma-systems.com>
Series-Cc: Christoph Muellner <christoph.muellner@theobroma-systems.com>
The logic in the main transmit loop took a bit of reading the TRM to
fully understand (due to silent assumptions based in internal logic):
the "wait until idle" at the end of each iteration through the loop is
required for the transmit-path as each clearing of the ENA register
(to update run-length in the CTRLR1 register) will implicitly flush
the FIFOs... transmisson can therefore not overlap loop iterations.
This change adds a comment to clarify the reason/need for waiting
until the controller becomes idle and wraps the entire check into an
'if (out)' to make it clear that this is required for transfers with a
transmit-component only (for transfers having a receive-component,
completion of the transmit-side is trivially ensured by having
received the correct number of bytes).
The change does not increase execution time measurably in any of my
tests.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
While rkspi_enable_chip is called with true/false everywhere else in
the file, one call site uses '0' to denot 'false'.
This change this one parameter to 'false' and effects consistency.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
The maximum transfer length (in a single transaction) for the Rockchip
SPI controller is 64Kframes (i.e. 0x10000 frames) of 8bit or 16bit
frames and is encoded as (num_frames - 1) in CTRLR1. The existing
code subtracted the "minus 1" twice for a maximum transfer length of
0xffff (64K - 1) frames.
While this is not strictly an error (the existing code is correct, but
leads to a bit of head-scrating), fix this off-by-one situation.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Even though the priv-structure and the claim-bus function contain
logic for 16bit frames and for unidirectional transfer modes, neither
of these is used anywhere in the driver.
This removes the unused (as in "has no effect") logic and fields.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
In analysing delays introduced for large SPI reads, the absence of any
indication when a delay was inserted (to ensure the CS toggling is
observed by devices) became apparent.
Add an additional debug-only debug message to record the insertion and
duration of any delay (note that the debug-message will cause a delay
on-top of the delay-duration).
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This adds reset handling to the cadence qspi driver.
For backwards compatibility, only a warning is printed when failing to
get reset handles.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Convert driver to use spi-mem ops in order to support accelerated MMIO
flash interface in generic way and for better performance.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Now that all boards using TI QSPI have moved to DM and DT, drop non DM
code completely.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[jagan: update MIGRATION.txt, rebase config_whitelist.txt]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This patch fixes the tap delay values to be set at 100MHz and 150MHz
as per TRM by fixing the if condition to use <= instead of <.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
