Commit graph

124 commits

Author SHA1 Message Date
Tom Rini
495dbd72dd Merge branch 'master' of git://git.denx.de/u-boot-arm 2012-09-21 14:53:13 -07:00
Albert ARIBAUD
d193c1b6eb Merge remote-tracking branch 'u-boot-imx/master' 2012-09-21 00:26:19 +02:00
Richard Retanubun
59d0612252 ColdFire: Queued SPI driver
This patch adds a driver for Freescale Colfire Queued SPI bus.
Coded to work with 8 bits per transfer to use with SPI flash.
CPOL, CPHA, and CS_ACTIVE_HIGH can be configured.

Tested with MCF5270 which have 4 chip selects.

Activate by #define CONFIG_CF_QSPI in board config.

Signed-off-by: Richard Retanubun <richardretanubun@ruggedcom.com>
2012-09-20 20:39:27 +08:00
Ira W. Snyder
f138ca1373 mpc8xxx_spi: fix SPI support on MPC8308RDB
The MPC8308RDB Reference Manual states that no bits in the SPMODE
register are allowed to change while the enable (EN) bit is set.

This driver changes the character length bits (LEN) while the enable
(EN) bit is set. Clearing the EN bit while changing the LEN bits makes
the driver work correctly on MPC8308RDB.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2012-09-18 16:16:44 -05:00
Stephan Linz
03afad2fc9 spi: xilinx: Remove unused variable
Warning is:

xilinx_spi.c: In function 'spi_setup_slave':
xilinx_spi.c:81: warning: unused variable 'regs'

Signed-off-by: Stephan Linz <linz@li-pro.net>
CC: Michal Simek <monstr@monstr.eu>
2012-09-11 09:24:56 +02:00
Tom Warren
29f3e3f248 Tegra: Change Tegra20 to Tegra in common code, prep for T30
Convert TEGRA20_ defines to either TEGRA_ or NV_PA_ where appropriate.
Convert tegra20_ source file and function names to tegra_, also.

Upcoming Tegra30 port will use common code/defines/names where possible.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
2012-09-10 13:01:24 -07:00
Marek Vasut
e9f7eafd3c MX28: SPI: Fix the DMA chaining
It turns out that in order for the SPI DMA to properly support
continuous transfers longer than 65280 bytes, there are some very
important parts that were left out from the documentation.

Firstly, the XFER_SIZE register is not written with the whole length
of a transfer, but is written by each and every chained descriptor
with the length of the descriptors data buffer.

Next, unlike the demo code supplied by FSL, which only writes one PIO
word per descriptor, this does not apply if the descriptors are chained,
since the XFER_SIZE register must be written. Therefore, it is essential
to use four PIO words, CTRL0, CMD0, CMD1, XFER_SIZE. CMD0 and CMD1 are
written with zero, since they don't apply. The DMA programs the PIO words
in an incrementing order, so four PIO words.

Finally, unlike the demo code supplied by FSL, the SSP_CTRL0_IGNORE_CRC
must not be set during the whole transfer, but it must be set only on the
last descriptor in the chain.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
2012-09-06 14:17:55 +02:00
Marek Vasut
88d1555968 MX28: SPI: Fix the DMA DCache race condition
This patch fixes dcache-related problem. The problem manifested
when dcache was enabled and the following command issued twice:

mw 0x42000000 0 0x4000 ; sf probe ; sf read 0x42000000 0x0 0x10000 ; sha1sum 0x42000000 0x10000

The SHA1 checksum was correct during the first call. Yet with
every subsequent call of the above command, it differed and was
wrong.

It turns out this was because of a race condition. On the first
time the command was called, no cacheline contained any data from
the destination memory location. The DMA transfered data into the
location and the cache above the location was invalidated. Then the
checksum was computed, but that meant the data were loaded into data
cache.

On any subsequent call, the DMA again transfered data into the same
destination. Yet during the transfer, some of the DCache lines were
evicted and written back into the main memory. Once the DMA transfer
completed, the data cache was invalidated over the memory location as
usual. But the data that were to be loaded back into the data cache
by subsequent SHA1 checksuming were corrupted.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
2012-09-06 14:17:55 +02:00
Valentin Longchamp
8203b201ea kw_spi: fix clock prescaler computation
The computation was not correct with low clock values: setting a 1MHz
clock would result in an overlap that would then configure a 25Mhz
clock.

This patch implements a correct computation method according to the
kirkwood functionnal spec. table 600 (Serial Memory Interface
Configuration Register).

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
Acked-by: Prafulla Wadaskar <Prafulla@marvell.com>

Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
2012-09-03 17:28:51 +05:30
Bo Shen
65c575506d spi: atmel: add WDRBT bit to avoid receive overrun
The atmel at91sam9x5 series spi has feature to avoid receive overren

Using the patch to enable it

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2012-09-01 17:06:14 +02:00
Marek Vasut
2c4321444a MX28: SPI: Supercharge the SPI driver
This change implements DMA chaining into SPI driver. This allows
the transfers to go much faster, while also fixing SF issues.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
2012-09-01 14:58:29 +02:00
Matt Sealey
c6b52c4927 spi: fix mxs_spi_slave structure allocation to clear memory
Use calloc() instead of malloc() to allocate the mxs_spi_slave structure.
Clearing the memory is necessary since most of the time this gets done
super early in boot, but on warm reboots, and when SPI probing is done
long after the init stages it could actually pick up previously used memory,
and things like the chipselect polarity and other data end up being filled
with trash data if not explicitly set by the board files.

This solves a semi-random, almost unreproducable error whereby SPI devices
act very, very strangly on boot.

Signed-off-by: Matt Sealey <matt@genesi-usa.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-09-01 14:58:27 +02:00
Matt Sealey
784097ae5a spi: fix mxc_spi_slave structure allocation to clear memory
Use calloc() instead of malloc() to allocate the mxc_spi_slave structure.
Clearing the memory is necessary since most of the time this gets done
super early in boot, but on warm reboots, and when SPI probing is done
long after the init stages it could actually pick up previously used memory,
and things like the chipselect polarity and other data end up being filled
with trash data if not explicitly set by the board files.

This solves a semi-random, almost unreproducable error whereby SPI devices
act very, very strangly on boot. Tested on Efika MX over several years..

Signed-off-by: Matt Sealey <matt@genesi-usa.com>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-09-01 14:58:27 +02:00
Benoît Thébaudeau
cd2004037c mxc_spi: Round up clock divider
Since the input frequency of the API is a maximum that should not be exceeded in
order for the devices to operate properly, the SPI clock divider should be
rounded up, not truncated.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
2012-09-01 14:58:25 +02:00
Otavio Salvador
fa7a51cb82 mxs: Convert sys_proto.h prefixes to 'mxs'
The sys_proto.h functions (except the boot modes) are compatible with
i.MX233 and i.MX28 so we use 'mxs' prefix for its methods.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
2012-09-01 14:58:25 +02:00
Allen Martin
00a2749d7b tegra20: rename tegra2 -> tegra20
This is make naming consistent with the kernel and devicetree and in
preparation of pulling out the common tegra20 code.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-09-01 14:58:21 +02:00
Tom Rini
a4a99fffd8 am335x evm: Enable support for spi0
Signed-off-by: Tom Rini <trini@ti.com>
2012-09-01 14:58:19 +02:00
Tom Rini
4c0620bf42 am33xx: Add support, update omap3 McSPI driver
Signed-off-by: Tom Rini <trini@ti.com>
2012-09-01 14:58:18 +02:00
Otavio Salvador
9c471142bc mxs: prefix register structs with 'mxs' prefix
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
2012-09-01 14:58:17 +02:00
Marek Vasut
7c5e6f7a5d MX28: SPI: Add DMA transfer support
The DMA transfers happen only if the transfered data are larger
than 512 bytes. Otherwise PIO is used. This is a small speed
optimization.

The DMA transfer doesn't work if unaligned transfer is requested
due to the limitation of the DMA controller. This has to be fixed
by introducing generic bounce buffer. Therefore the DMA feature
is now disabled by default.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2012-09-01 14:58:16 +02:00
Marek Vasut
ccd4d5a0d4 MX28: SPI: Pull out the PIO transfer function
Pull out all the PIO transfer logic into separate function,
so DMA can be added.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2012-09-01 14:58:16 +02:00
Marek Vasut
c7065fa824 MX28: SPI: Refactor spi_xfer a bit
This makes it easier to adapt for addition of DMA support.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
2012-09-01 14:58:16 +02:00
Michal Simek
968766a7e8 spi: Fix merge conflicts - Makefile
The patch "spi: tegra2: rename tegra2_spi.* to tegra_spi.*"
(sha1: edffa63d3d)
renamed tegra2_spi.c to tegra_spi.c

and the patch "Merge branch 'master' of git://git.denx.de/u-boot-microblaze"
(sha1: d978780b2e)

has wrongly resolved confict.

This patch fix it.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2012-08-07 23:08:14 +02:00
Wolfgang Denk
d978780b2e Merge branch 'master' of git://git.denx.de/u-boot-microblaze
* 'master' of git://git.denx.de/u-boot-microblaze:
  microblaze: Wire up SPI driver
  spi: microblaze: Adds driver for Xilinx SPI controller
  microblaze: intc: Clear interrupt code
  microblaze: Call serial multi initialization
  microblaze: Move __udelay implementation
  microblaze: Remove extern from board.c
  microblaze: Wire up dts configuration
  fdt: Add board specific dts inclusion
  microblaze: Move individual board linker scripts to common script in cpu tree.
  microblaze: Add gpio.h
  microblaze: Add missing undefs for UBI and UBIFS
  microblaze: Expand and correct configuration comments
  microblaze: Enable ubi support
  microblaze: Avoid compile error on systems without cfi flash
  microblaze: Remove wrong define CONFIG_SYS_FLASH_PROTECTION

Conflicts:
	drivers/spi/Makefile

Signed-off-by: Wolfgang Denk <wd@denx.de>
2012-07-31 22:01:08 +02:00
Stephan Linz
09aac75e4d spi: microblaze: Adds driver for Xilinx SPI controller
This is an improved version of the driver patch original
submitted by Graeme Smecher <graeme.smecher@mail.mcgill.ca>

The changes are:
    - remove hard coded Xilinx BSP defines (XPAR_SPI_*) and
      use CONFIG_SYS_SPI_BASE from config.h instead
    - add extensive register struct definitions
    - remove offset calculation for register access and
      use the new register struct instead
    - move default SPI controller configuration from
      spi_setup_slave() to spi_claim_bus()
    - add spi_set_speed()
    - insert SPI controller deactivation in spi_release_bus()
    - protect while loops in spi_xfer() with counter / timeouts
    - support SPI mode flags: LSB_FIRST, CPHA, CPOL, LOOP

Come from:
    http://patchwork.ozlabs.org/patch/71797/

Signed-off-by: Stephan Linz <linz@li-pro.net>
Tested-by: Michal Simek <monstr@monstr.eu>
2012-07-31 07:14:04 +02:00
Fabio Estevam
148ca64f32 spi: mxs: Allow other chip selects to work
MXS SSP controller may have up to three chip selects per port: SS0, SS1 and SS2.

Currently only SS0 is supported in the mxs_spi driver.

Allow all the three chip select to work by selecting the desired one
in bits 20 and 21 of the HW_SSP_CTRL0 register.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
2012-05-15 08:31:35 +02:00
Fabio Estevam
79cb14ab39 spi: mxs: Introduce spi_cs_is_valid()
Introduce spi_cs_is_valid() for validating spi bus and chip select numbers.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-05-15 08:31:35 +02:00
Wolfgang Denk
bc6f6c87b6 Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm: (146 commits)
  arm: Use common .lds file where possible
  arm: add a common .lds link script
  arm: Remove unneeded setting of LDCSRIPT
  Define CPUDIR for the .lds link script
  arm: Remove zipitz2 link script
  Allow arch directory to contain .lds without requiring Makefile
  OMAP: Remove omap1610inn-based boards
  arch/arm/cpu/armv7/omap-common/clocks-common.c: Fix build warnings
  board/ti/beagle/beagle.c: Fix build warnings
  sdrc.c: Fix typo in do_sdrc_init() for SPL
  tegra: i2c: Add I2C driver
  tegra: fdt: i2c: Add extra I2C bindings for U-Boot
  tegra: i2c: Select I2C ordering for Seaboard
  tegra: i2c: Enable I2C on Seaboard
  tegra: i2c: Select number of controllers for Tegra2 boards
  tegra: i2c: Initialise I2C on Nvidia boards
  tegra: Enhance clock support to handle 16-bit clock divisors
  fdt: Add function to allow aliases to refer to multiple nodes
  tegra: Rename NV_PA_PMC_BASE to TEGRA2_PMC_BASE
  tegra: fdt: Enable FDT support for Ventana
  tegra: fdt: Enable FDT support for Seaboard
  tegra: usb: Enable USB on Seaboard
  tegra: usb: Add common USB defines for tegra2 boards
  tegra: usb: Add USB support to nvidia boards
  arm: Check for valid FDT after console is up
  fdt: Avoid early panic() when there is no FDT present
  tegra: usb: Add support for Tegra USB peripheral
  tegra: fdt: Add function to return peripheral/clock ID
  usb: Add support for txfifo threshold
  tegra: usb: fdt: Add USB definitions for Tegra2 Seaboard
  tegra: usb: fdt: Add additional device tree definitions for USB ports
  tegra: fdt: Add clock bindings for Tegra2 Seaboard
  tegra: fdt: Add clock bindings
  tegra: fdt: Add additional USB binding
  fdt: Add tegra-usb bindings file from linux
  fdt: Add staging area for device tree binding documentation
  tegra: fdt: Add device tree file for Tegra2 Seaboard from kernel
  tegra: fdt: Add Tegra2x device tree file from kernel
  arm: fdt: Add skeleton device tree file from kernel
  fdt: Add basic support for decoding GPIO definitions
  fdt: Add functions to access phandles, arrays and bools
  fdt: Tidy up a few fdtdec problems
  fdt: Add tests for fdtdec
  fdt: Add fdtdec_find_aliases() to deal with alias nodes
  arm: Tegra2: Fix ELDK42 gcc failure with inline asm stack pointer load
  net: fec_mxc: allow use with cache enabled
  net: force PKTALIGN to ARCH_DMA_MINALIGN
  i.MX28: Enable caches by default
  i.MX28: Make use of the bounce buffer
  i.MX28: Do data transfers via DMA in MMC driver
  MMC: Implement generic bounce buffer
  i.MX28: Add cache support to MXS NAND driver
  i.MX28: Add cache support into the APBH DMA driver
  ARM926EJS: Implement cache operations
  board/vpac270/onenand.c: Fix build errors
  nhk8815: fix build errors
  atmel-boards: add missing atmel_mci.h
  ARM: highbank: setup env from boot source register
  ARM: highbank: change env config to use nvram
  ARM: highbank: add reset support
  ARM: highbank: Add boot counter support
  ARM: highbank: change TEXT_BASE to 0x8000
  ARM: highbank: fix us_to_tick calculation
  ARM: highbank: add missing get_tbclk
  ARM: highbank: fix warning for calxedaxgmac_initialize
  net: calxedaxgmac: fix build due to missing __aligned definition
  EXYNOS: Add structure for Exynos4 DMC
  EXYNOS: SMDK5250: Support all 4 UARTs
  ARM: fix s3c2410 timer code
  ARM: davinci: fixes for cam_enc_4xx board
  omap3_spi: receive transmit mode
  calimain, enbw_cmc: Fix typo in comments
  Davinci: ea20: use gpio framework to access gpios
  OMAP3: mt_ventoux: sets its own mtdparts
  OMAP3: mt_ventoux: updated timing for FPGA
  twl4030: fix potential power supply handling issues
  NAND: TI: fix warnings in omap_gpmc.c
  cam_enc_4xx: Rename 'images' to 'imgs'
  arm: Add Prep subcommand support to bootm
  OMAP3: twister: add support to boot Linux from SPL
  SPL: call cleanup_before_linux() before booting Linux
  OMAP3: SPL: do not call I2C init if no I2C is set.
  Add cache functions to SPL for armv7
  devkit8000: Implement and activate direct OS boot
  omap/spl: change output of spl_parse_image_header
  omap-common/spl: Add linux boot to SPL
  devkit8000/spl: init GPMC for dm9000 in SPL
  omap-common: Add NAND SPL linux booting
  devkit8000: add config for spl command
  Add cmd_spl command
  mx53ard: Initialize return code with error
  mx53: Make PLL2 to be the parent of UART clock
  configs: imx: Use CONFIG_SF_DEFAULT_CS
  mx28evk: Provide default values for SPI bus and chip select
  USB: ehci-mx6: Add proper IO accessors
  mx6: Read silicon revision from register
  i.MX28: Drop __naked function from spl_mem_init
  mxs_spi: Return proper timeout error
  i.MX28: Make the stabilization delays shorter
  pmic_i2c: Return error in case of invalid pmic_i2c_tx_num
  mx6: Remove duplicate definition of ANATOP_BASE_ADDR
  mx6: Fix reset cause for Power On Reset case
  i.MX6: mx6qsabrelite: add MACH_TYPE_MX6Q_SABRELITE
  i.MX6: mx6q_sabrelite: add CONFIG_REVISION_TAG
  i.MX28: Enable additional DRAM address bits
  mx6q: mx6qsabrelite: setup_spi() should be called in board_init to allow use for environment
  mx31: add "ARM11P power gating" to get_reset_cause
  mx31pdk: Fix CONFIG_SYS_MEMTEST_END
  efikamx: Fix CONFIG_SYS_MEMTEST_END
  mx53smd: Fix CONFIG_SYS_MEMTEST_END
  mx53evk: Fix CONFIG_SYS_MEMTEST_END
  mx51evk: Fix CONFIG_SYS_MEMTEST_END
  i.MX6: mx6qsabrelite: add ext2 support
  imximage: Remove overwriting of flash_offset
  IXP: Fix GPIO_INT_ACT_LOW_SET()
  IXP: Fix NAND build warning on PDNB3 and SCPU
  IXP: Move PDNB3 and SCPU from Makefile to boards.cfg
  IXP: Squash warnings in IXP NPE
  IXP: Fix missing MACH_TYPE_{ACTUX?,PNB3,DVLHOST}
  IXP: Make IXP buildable with arm-linux- toolchains
  Examples: Properly append LDFLAGS to LD command
  SPL: Enable YMODEM support on BeagleBone and AM335x EVM
  SPL: Add YMODEM over UART load support
  SPL: Add README.omap3
  README: document more SPL config options
  spl.c: Use __noreturn decorator
  config.mk: Check for -fstack-usage support
  config.mk: Make cc-option create a file under include/generated
  ...
2012-03-30 18:09:08 +02:00
jacopo mondi
08b5ab073d omap3_spi: receive transmit mode
Implementation of receive-transmit mode for
omap3 MCSPI.

Introduces full duplex communication, needed by
some spi devices (such as enc28j60).

Signed-off-by: jacopo mondi <mondi@cs.unibo.it> <j.mondi@voltaelectronics.com>
2012-03-27 22:05:29 +02:00
Fabio Estevam
d9fb6a4c7e mxs_spi: Return proper timeout error
Instead of returning -1, it is preferred to return -ETIMEDOUT in case of timeouts.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
2012-03-27 09:41:16 +02:00
Yoshihiro Shimoda
c1d4ad9417 sh_spi: Add 4 chip select signals supporting
The module has 4 chip select signals. This patch supports it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2012-03-26 10:09:31 +09:00
Eric Nelson
08c61a589b mxc_spi: move machine specifics into CPU headers
Move (E)CSPI register declarations into the imx-regs.h files for each supported CPU

Introduce two new macros to control conditional setup
     MXC_CSPI - Used for processors with the Configurable Serial Peripheral Interface (MX3x)
     MXC_ECSPI - For processors with Enhanced Configurable... (MX5x, MX6x)

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Jason Liu <jason.hui@linaro.org>
2012-02-27 21:19:23 +01:00
Ian Campbell
3f8435516b kirkwood_spi: correct access to irq_mask register
Problem appears to have been present since day one but masked because alignment
aborts were not enabled. ca4b55800e "arm, arm926ejs: always do cpu critical
inits" turned on alignment aborts and uncovered this latent problem.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-By: Jason Cooper <u-boot@lakedaemon.net>
Tested-By: Holger Brunck <holger.brunck@keymile.com>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
2012-02-12 10:11:27 +01:00
Matthias Fuchs
2638b50b18 mx28: fix i.MX28 spi driver
The generic spi flash driver (drivers/mtd/spi/spi_flash.c) uses the
spi low level driver's spi_xfer() function with len=0 to deassert the
SPI flash' chip select. But the i.MX28 spi driver rejects this call
due to len=0.

This patch implements an exception for len=0 with the SPI_XFER_END
flag set. This results in an extra read with the chip select being
deasserted afterwards. There seems to be no way to deassert the signal
by hand.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-02-12 10:11:27 +01:00
Valentin Longchamp
24934fea0c kw_spi: add weak functions board_spi_claim/release_bus
This allows a final, board specific, step in the claim/relase_bus
function for the SPI controller, which may be needed for some hardware
designs.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
2012-07-07 14:07:32 +02:00
Valentin Longchamp
ac486e3ba1 kw_spi: support spi_claim/release_bus functions
These two function nows ensure that the MPP is configured correctly for
the SPI controller before any SPI access, and restore the initial
configuration when the access is over.

Since the used pins for the SPI controller can differ (2 possibilities
for each signal), the used pins are configured with CONFIG_SYS_KW_SPI_MPP.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
2012-07-07 14:07:32 +02:00
Valentin Longchamp
ca880679dd kw_spi: backup and reset the MPP of the chosen CS pin
This was not done before, and in the case of a shared pin (for MPP0
between NF_IO[2] and CSn) this could lead to problems.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Holger Brunck <holger.brunck@keymile.com>
cc: Prafulla Wadaskar <prafulla@marvell.com>
2012-07-07 14:07:31 +02:00
Tom Warren
edffa63d3d spi: tegra2: rename tegra2_spi.* to tegra_spi.*
In anticipation of Tegra3 support, start removing/renaming
Tegra2-specific files. No functional changes (yet).
Also updated copyright to 2012.

Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-07-07 14:07:20 +02:00
Tom Warren
078078cfa9 spi: Tegra2: Seaboard: fix UART corruption during SPI transactions
Simon Glass's proposal to fix this on Seaboard was NAK'd, so I
removed his NS16550 references and added a small delay before
SPI/UART muxing. Tested on my Seaboard with large SPI reads/writes
and saw no corruption (crc's matched) and no spurious comm chars.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Jimmy Zhang <jimmzhang@nvidia.com>
2012-07-07 14:07:17 +02:00
Simon Glass
4560c7decc tegra2: spi: Support SPI / UART switch
Add the SPI / UART switch logic into the Tegra2 SPI driver so that it
can co-exist with the NS16550 UART.

We need the ns16550.h header for NS16550_t for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2011-12-24 10:23:31 +01:00
Tom Warren
9112ef8d89 tegra2: spi: Add SPI driver for Tegra2 SOC
This driver supports SPI on Tegra2, running at 48MHz.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2011-12-24 10:23:30 +01:00
Anatolij Gustschin
eba46d69b3 drivers/spi/atmel_spi.c: Fix GCC 4.6 warning
Fix:
atmel_spi.c: In function 'spi_xfer':
atmel_spi.c:139:7: warning: variable 'ret' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2011-11-16 21:28:25 +01:00
Marek Vasut
ec33de3d12 iMX28: Add SPI driver
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
2011-11-11 11:36:57 +01:00
Wolfgang Denk
87a5d60103 Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
  ARM: Add Calxeda Highbank platform
  dkb: make mmc command as default enabled
  Marvell: dkb: add mmc support
  ARM: pantheon: add mmc definition
  davinci: remove config.mk file from the sources
  ARM:AM33XX: Add support for TI AM335X EVM
  ARM:AM33XX: Added timer support
  ARM:AM33XX: Add emif/ddr support
  ARM:AM33XX: Add clock definitions
  ARM:AM33XX: Added support for AM33xx
  omap3/emif4: fix registers definition
  davinci: remove obsolete macro CONFIG_EMAC_MDIO_PHY_NUM
  davinci: emac: add support for more than 1 PHYs
  davinci: emac: add new features to autonegotiate for EMAC
  da850evm: Move LPSC configuration to board_early_init_f()
  omap4_panda: Build in cmd_gpio support on panda
  omap: Don't use gpio_free to change direction to input
  mmc: omap: Allow OMAP_HSMMC[23]_BASE to be unset
  OMAP3: overo : Add environment variable optargs to bootargs
  OMAP3: overo: Move ethernet CS4 configuration to execute based on board id
  OMAP3: overo : Use ttyO2 instead of ttyS2.
  da830: add support for NAND boot mode
  dm36x: revert cache disable patch
  dm644X: revert cache disable patch
  devkit8000: Add malloc space
  omap: spl: fix build break due to changes in FAT
  OMAP3 SPL: Provide weak omap_rev_string
  omap: beagle: Use ubifs instead of jffs2 for nand boot
  omap: overo: Disable pull-ups on camera PCLK, HS and VS signals
  omap: overo: Configure mux for gpio10
  SPL: Add DMA library
  omap3: Add interface for omap3 DMA
  omap3: Add DMA register accessors
  omap3: Add Base register for DMA
  arm, davinci: add missing LSPC define for MMC/SD1
  U-Boot/SPL: omap4: Make ddr pre-calculated timings as default.
  DaVinci: correct MDSTAT.STATE mask
  omap4: splitting padconfs into common, 4430 and 4460
  omap4: adding revision detection for 4460 ES1.1
  omap4: replacing OMAP4_CONTROL with OMAP4430_CONTROL
  gplug: fixed build error as a result of code cleanup patch
  kirkwood_spi: add dummy spi_init()
  gpio: mvmfp: reduce include platform file
  ARM: orion5x: reduce dependence of including platform file
  serial: reduce include platform file for marvell chip
  ARM: kirkwood: reduce dependence of including platform file
  ARM: armada100: reduce dependence of including platform file
  ARM: pantheon: reduce dependence of including platform file
  Armada100: Add env storage support for Marvell gplugD
  Armada100: Add SPI flash support for Marvell gplugD
  Armada100: Add SPI support for Marvell gplugD
  SPI: Add SPI driver support for Marvell Armada100
  dreamplug: initial board support.
  imx: fix coding style
  misc: pmic: drop old Freescale's pmic driver
  MX31: mx31pdk: use new pmic driver
  MX31: mx31ads: use new pmic driver
  MX31: mx31_litekit: use new pmic driver
  MX5: mx53evk: use new pmic driver
  MX5: mx51evk: use new pmic driver
  MX35: mx35pdk: use new pmic driver
  misc: pmic: addI2C  support to pmic_fsl driver
  misc: pmic: use I2C_SET_BUS in pmic I2C
  MX5: efikamx/efikasb: use new pmic driver
  MX3: qong: use new pmic driver
  RTC: Switch mc13783 to generic pmic code
  MX5: vision2: use new pmic driver
  misc: pmic: Freescale PMIC switches to generic PMIC driver
  misc:pmic:samsung Enable PMIC driver at GONI target
  misc:pmic:max8998 MAX8998 support at a new PMIC driver.
  misc:pmic:core New generic PMIC driver
  mx31pdk: Remove unneeded config
  mx31: provide readable WEIM CS accessor
  MX51: vision2: Set global macros
  I2C: Add i2c_get/set_speed() to mxc_i2c.c
  ARM: Update mach-types
  devkit8000: Add config to enable SPL MMC boot
  devkit8000: protect board_mmc_init
  arm, post: add missing post_time_ms for arm
  cosmetic, post: Codingstyle cleanup
  arm, logbuffer: make it compileclean
  tegra2: Enable MMC for Seaboard
  tegra2: Add more pinmux functions
  tegra2: Rename PIN_ to PINGRP_
  tegra2: Add more clock functions
  tegra2: Clean up board code a little
  tegra2: Rename CLOCK_PLL_ID to CLOCK_ID
2011-10-28 00:15:19 +02:00
Marek Vasut
2e8f6419aa GCC4.6: Squash warnings in kirkwood_spi.c
kirkwood_spi.c:125:2: warning: format '%08X' expects type 'unsigned int', but
argument 4 has type 'const void *'
kirkwood_spi.c:125:2: warning: format '%08X' expects type 'unsigned int', but
argument 5 has type 'void *'
kirkwood_spi.c:160:5: warning: format '%08x' expects type 'unsigned int', but
argument 2 has type 'void *'

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
2011-10-27 23:54:07 +02:00
Marek Vasut
5cc08a179f GCC4.6: Squash warnings in fsl_espi.c
fsl_espi.c: In function 'spi_setup_slave':
fsl_espi.c💯 warning: format '%d' expects type 'int', but argument 3 has type
'long unsigned int'
fsl_espi.c: In function 'spi_xfer':
fsl_espi.c:237: warning: format '%08x' expects type 'unsigned int', but argument
5 has type 'const void *'
fsl_espi.c:237: warning: format '%08x' expects type 'unsigned int', but argument
7 has type 'void *'

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
2011-10-27 23:54:05 +02:00
Michael Walle
efa4e43a40 kirkwood_spi: add dummy spi_init()
The spi_init() function is missing. Add it.

Signed-off-by: Michael Walle <michael@walle.cc>
2011-10-27 21:56:33 +02:00
Lei Wen
a7efd719f4 ARM: kirkwood: reduce dependence of including platform file
For files like the drivers/serial/serial.c, it must include the
platform file, as the CONFIG_SYS_NS16550_COM1 must reference to the
definition in the platform definition files.

Include the platform definition file in the config file, so that it
would decouple the dependence for the driver files.

Signed-off-by: Lei Wen <leiwen@marvell.com>
2011-10-27 21:56:33 +02:00
Ajay Bhargav
51100cfcca SPI: Add SPI driver support for Marvell Armada100
This patch provides support for SPI emulated over SSP for Marvell
Armada100 SOC.

Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
2011-10-27 21:56:32 +02:00
Mike Frysinger
e2f014503e Blackfin: bfin_spi: fix build error when DEBUG is defined
The new debug() changes pointed out debug code that rotted a little.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-10-16 14:22:19 -04:00