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Rajeshwari Shinde bb786b84bd spi: Add support for preamble bytes 
A SPI slave may take time to react to a request. For SPI flash devices
this time is defined as one bit time, or a whole byte for 'fast read'
mode.

If the SPI slave is another CPU, then the time it takes to react may
vary. It is convenient to allow the slave device to tag the start of
the actual reply so that the host can determine when this 'preamble'
finishes and the actual message starts.

Add a preamble flag to the available SPI flags. If supported by the
driver then it will ignore any received bytes before the preamble
on each transaction. This ensures that reliable communication with
the slave is possible.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
2013-06-03 00:04:40 +05:30
..
andestech andes_pcu.h: header file of andes_pcu power control unit 2011-11-09 16:35:27 +08:00
asm-generic Power: remove support for Freescale MPC8220 2013-05-15 08:41:03 -04:00
bedbug Consolidate bool type 2013-04-01 16:33:52 -04:00
configs Merge branch 'master' of git://www.denx.de/git/u-boot-mpc85xx 2013-05-15 08:41:04 -04:00
cramfs
faraday mmc: update Faraday FTSDC010 for rw performance 2013-05-15 18:18:15 -05:00
galileo Consolidate bool type 2013-04-01 16:33:52 -04:00
jffs2
linux Consolidate bool type 2013-04-01 16:33:52 -04:00
lzma
mtd Revert "mtd: cfi_flash: Fix CFI flash driver for 8-bit bus support" 2013-04-12 19:04:54 +02:00
pcmcia
power SMDK5250: Add PMIC voltage settings 2013-02-20 16:48:17 +09:00
synopsys dwcddr21mctl: Synopsys DWC DDR2/1 Memory Controller 2011-11-09 16:35:27 +08:00
u-boot Roll crc32 into hash infrastructure 2013-02-28 19:09:23 -08:00
usb Merge remote-tracking branch 'u-boot/master' into u-boot-arm-merged 2012-12-19 13:02:36 -08:00
zfs zfs: Add ZFS filesystem support 2012-08-09 23:42:20 +02:00
_exports.h
.gitignore tools: logo: split bmp arrays from bmp_logo.h 2011-11-15 23:58:26 +01:00
74xx_7xx.h
ACEX1K.h
addr_map.h lib/powerpc: addrmap_phys_to_virt() should return a pointer 2012-07-06 17:30:32 -05:00
aes.h Add AES crypto library 2012-05-15 08:31:37 +02:00
ahci.h ahci: cosmetics and cleanup 2012-11-02 15:20:41 -07:00
ali512x.h
altera.h
amba_clcd.h
ambapp.h
ansi.h New command bootmenu: ANSI terminal boot menu support 2013-03-29 09:35:34 +01:00
api_public.h api: export LCD device to external apps 2011-11-15 23:58:27 +01:00
arm925t.h
armcoremodule.h
asm-offsets.h
at45.h
at91rm9200_i2c.h
at91rm9200_net.h Consolidate bool type 2013-04-01 16:33:52 -04:00
ata.h ahci: Perform SATA flush after disk write. 2012-11-02 15:20:43 -07:00
atmel_hlcdc.h video: atmel: implement lcd_setcolreg function 2012-11-10 14:04:08 +01:00
atmel_lcdc.h
atmel_mci.h mmc: at91: add multi block read/write support. 2012-10-17 11:28:54 +02:00
bcd.h
bcm5221.h
bmp_layout.h
bootcount.h Consolidate bootcount code into drivers/bootcount 2012-09-01 14:26:02 +02:00
bootstage.h bootstage: Don't build for HOSTCC 2013-05-14 15:37:24 -04:00
bouncebuf.h common: rework bouncebuf implementation 2012-11-27 17:26:48 -06:00
bus_vcxk.h
bzlib.h
cbfs.h cbfs: Add docbook template 2012-12-06 13:56:39 -07:00
circbuf.h
cmd_spl.h Add cmd_spl command 2012-03-27 22:05:28 +02:00
command.h Refactor linker-generated arrays 2013-03-12 23:28:40 +01:00
common.h Power: remove support for Freescale MPC8220 2013-05-15 08:41:03 -04:00
commproc.h PPC: remove dead boards (AMX860, c2mon, ETX094, IAD210, LANTEC, SCM) 2012-10-28 20:17:25 +01:00
compiler.h Define uintptr_t as long int to simplify printf() format strings 2011-11-22 08:39:24 +01:00
config_cmd_all.h Feature Removal: disable "mtest" command by default 2013-03-11 15:26:59 -04:00
config_cmd_default.h config_cmd_default.h: Remove CONFIG_CMD_MEMTEST 2013-04-19 15:03:27 -04:00
config_cmd_defaults.h
config_defaults.h image: Add support for Plan 9 2013-03-27 15:30:11 -04:00
config_fallbacks.h Makefile: Change CONFIG_SPL_PAD_TO to image offset 2013-04-12 07:55:06 +02:00
config_phylib_all_drivers.h phylib: Enable SMSC LAN87xx PHY support 2012-10-22 15:52:46 -05:00
config_uncmd_spl.h OMAP: networking support for SPL 2012-10-01 10:02:14 -07:00
cpsw.h cpsw: add driver for cpsw ethernet device 2012-09-01 14:58:10 +02:00
crc.h
da9030.h
dataflash.h dataflash: fix parameters order in write_dataflash() 2011-11-27 19:46:27 +01:00
ddr_spd.h powerpc/mpc8xxx: Add fine timing support for DDR3 2012-08-23 12:16:55 -05:00
dfu.h dfu: NAND specific routines for DFU operation 2013-04-10 15:22:24 +02:00
dialog_pmic.h pmic: dialog: Avoid name conflicts 2012-05-15 08:31:34 +02:00
div64.h
dm9000.h
dm9161.h
dp83848.h
ds1722.h
ds4510.h
dtt.h
dwmmc.h mmc: dw-mmc: support DesignWare MMC Controller 2012-10-22 02:56:25 -05:00
e500.h poweprc/85xx: add QMan frequency info and fdt fixup. 2012-10-22 15:52:46 -05:00
edid.h edid: Library of EDID decode and print 2012-12-11 13:17:34 -07:00
elf.h
env_attr.h env: Add support for callbacks to environment vars 2012-12-13 11:46:55 -07:00
env_callback.h env_callback: Mark find_env_callback as static 2013-03-27 15:30:11 -04:00
env_default.h env: Add environment variable flags 2012-12-13 11:46:56 -07:00
env_flags.h env: Handle write-once ethaddr and serial# generically 2012-12-13 11:46:57 -07:00
environment.h env: Add redundant env support to UBI env 2013-04-11 15:52:55 -04:00
errno.h
exports.h vsprintf: add ustrtoll function 2013-02-19 17:01:26 -05:00
ext4fs.h fs/ext4: Support device block sizes != 512 bytes 2013-05-10 08:16:33 -04:00
ext_common.h fs/ext4: Support device block sizes != 512 bytes 2013-05-10 08:16:33 -04:00
fat.h fs: Move ls and read methods into ext4, fat 2013-03-04 14:19:56 -05:00
fdc.h
fdt_support.h image: Add device tree setup to image library 2013-05-14 15:37:25 -04:00
fdt.h Move FDT_RAMDISK_OVERHEAD from fdt.h to libfdt_env.h 2013-05-10 19:04:50 -04:00
fdtdec.h Merge branch 'master' of git://git.denx.de/u-boot-arm 2013-04-15 07:46:11 -04:00
fis.h
flash.h mtd/cfi: add support for SST 4KB sector granularity 2013-01-10 14:39:13 +01:00
fm_eth.h Fman/t4240: some fix for 10G XAUI 2013-05-14 16:00:26 -05:00
fpga.h Consolidate bool type 2013-04-01 16:33:52 -04:00
fs.h fs: Add support for saving data to filesystems 2013-05-01 11:17:21 -04:00
fsl_diu_fb.h
fsl_esdhc.h fsl_esdhc: Fix DMA transfer completion waiting loop 2013-04-14 11:22:47 +02:00
fsl_mdio.h fm/mEMAC: add mEMAC frame work 2012-10-22 14:31:25 -05:00
fsl_pmic.h mx53loco: Turn on VUSB regulator 2012-05-15 08:31:34 +02:00
g_dnl.h Remove obsolete header file 2012-11-27 09:41:10 -07:00
gdsys_fpga.h powerpc/ppc4xx: Remove typedefs for gdsys FPGA 2012-04-30 15:01:29 +02:00
hash.h hash: Add a way to calculate a hash for any algortihm 2013-05-14 15:37:24 -04:00
hush.h
hw_sha.h gen: Add sha h/w acceleration to hash 2013-03-29 20:10:42 +09:00
hwconfig.h
i2c.h I2C: Driver changes for FDT support 2013-01-08 10:54:33 +09:00
i2s.h SOUND: SAMSUNG: Add I2S driver 2012-11-15 21:08:20 +09:00
i8042.h input: i8042: Provide feature to disable keyboard before booting kernel 2012-10-19 15:25:43 -07:00
ide.h Adjust board_r.c for ppc 2013-03-15 16:14:00 -04:00
image.h image: Add device tree setup to image library 2013-05-14 15:37:25 -04:00
initcall.h Introduce a basic initcall implementation 2013-03-15 16:13:59 -04:00
input.h input: Add ANSI 3.64 escape sequence generation. 2012-10-19 15:25:44 -07:00
iomux.h
ioports.h
ipu_pixfmt.h i.MX video: struct fb_videomode can be const 2012-10-16 12:35:11 +02:00
key_matrix.h input: Allow key ghosting filter to be disabled 2012-10-15 11:54:04 -07:00
keyboard.h
kgdb.h
ks8721.h
lattice.h Remove execute permissions from source files 2012-03-04 21:56:15 +01:00
lcd.h Merge branch 'u-boot/master' into 'u-boot-arm/master' 2013-04-12 22:07:57 +02:00
lcdvideo.h
ld9040.h drivers: video: Add ld9040 video driver 2012-11-15 21:08:19 +09:00
led-display.h
libata.h
libfdt_env.h Move FDT_RAMDISK_OVERHEAD from fdt.h to libfdt_env.h 2013-05-10 19:04:50 -04:00
libfdt.h libfdt: Add fdt_next_subnode() to permit easy subnode iteration 2013-05-14 15:37:25 -04:00
libtizen.h create lib/tizen directory 2012-05-25 09:15:10 +02:00
linker_lists.h Refactor linker-generated arrays 2013-03-12 23:28:40 +01:00
linux_logo.h
lmb.h image: Add device tree setup to image library 2013-05-14 15:37:25 -04:00
logbuff.h
lxt971a.h
lynxkdi.h
malloc.h Consolidate bool type 2013-04-01 16:33:52 -04:00
mb862xx.h
mc9sdz60.h
mc13783.h mc13783.h: create and add regulator mode 0 and 1 2012-02-12 10:11:27 +01:00
mc13892.h MC13892: Add REGMODE0 bits definitions 2011-12-06 23:59:39 +01:00
mc34704.h pmic: Add support for mc34704 2012-10-26 16:28:07 +02:00
MCD_dma.h
MCD_progCheck.h
MCD_tasksInit.h
menu.h menu: export menu_default_choice() function 2013-03-29 09:35:34 +01:00
micrel.h net: phy: add support for Micrel's KSZ9021 2012-02-27 21:19:25 +01:00
mii_phy.h
miiphy.h net/miiphy/serial: drop duplicate "NAMESIZE" define 2012-03-18 20:11:22 +01:00
mk48t59.h
mmc.h mmc: Split device init to decouple OCR-polling delay 2013-05-06 16:12:38 -05:00
mpc5xx.h
mpc5xxx_sdma.h
mpc5xxx.h mpc5xxx: add pci_mpc5xxx_init prototype to common header 2012-09-01 14:19:02 +02:00
mpc8xx_irq.h
mpc8xx.h
mpc83xx.h mpc83xx: add support for mpc8309 2012-10-23 15:23:26 -05:00
mpc85xx.h
mpc86xx.h
mpc106.h
mpc824x.h
mpc8260_irq.h
mpc8260.h
mtd_node.h
mv88e6352.h net/phy: support the mv88e6352 switch 2012-09-27 12:21:56 -05:00
mvmfp.h
nand.h nand: Extend nand_(read|write)_skip_bad with *actual and limit parameters 2013-04-10 15:22:22 +02:00
net.h net/: sparse fixes 2012-11-04 11:00:36 -07:00
netdev.h Power: remove support for Freescale MPC8220 2013-05-15 08:41:03 -04:00
nios2-epcs.h
nios2-io.h
nios2-yanu.h
nios2.h nios2: use builtin functions for control registers access 2012-11-10 19:45:58 +08:00
nomadik.h
ns16550.h serial/ns16550: ns16550 has a different register layout on SOC_DA8XX 2012-09-01 14:58:10 +02:00
ns87308.h
onenand_uboot.h arm: Remove support for unused s3c64xx 2013-04-12 07:55:08 +02:00
os.h sandbox: Add a way of obtaining directory listings 2013-03-04 14:19:56 -05:00
part_efi.h disk/gpt: Fix GPT partition handling for blocksize != 512 2013-05-01 16:24:02 -04:00
part.h part/dev_desc: Add log2 of blocksize to block_dev_desc data struct 2013-05-01 16:24:02 -04:00
pc_keyb.h
pca953x.h
pca9564.h
pca9698.h gpio: Adapt PCA9698 to standard GPIO API 2011-11-18 14:04:25 +01:00
pci_ids.h pci: update pci_ids.h with a few new entries 2012-09-02 14:18:52 +02:00
pci.h x86: gpio: Add GPIO driver for Intel ICH6 and later. 2012-12-06 14:30:38 -08:00
pcmcia.h PPC: remove dead boards (AMX860, c2mon, ETX094, IAD210, LANTEC, SCM) 2012-10-28 20:17:25 +01:00
phy.h net/phy: add VSC8574 support 2013-05-14 16:13:25 -05:00
physmem.h Introduce arch_phys_memset which works like memset but on physical memory 2012-12-06 14:30:40 -08:00
post.h
ppc_asm.tmpl Power: remove support for Freescale MPC8220 2013-05-15 08:41:03 -04:00
ppc_defs.h
ps2mult.h
pwm.h
radeon.h
reiserfs.h cmd_reiser: use common get_device_and_partition function 2012-09-25 14:49:18 -07:00
rtc.h
s6e63d6.h
s_record.h
SA-1100.h
sandboxfs.h sandbox: fs: Add support for saving files to host filesystem 2013-05-01 11:17:21 -04:00
sata.h sata.h: Make all sata/ata drivers include <sata.h> 2012-10-15 11:54:03 -07:00
scsi.h Consolidate bool type 2013-04-01 16:33:52 -04:00
sdhci.h mmc: add no simultaenous power and vdd 2012-11-27 17:26:48 -06:00
search.h "env grep" - add support for regular expression matches 2013-05-01 16:24:00 -04:00
sed156x.h
sed13806.h
serial.h Tegra30: Add generic Tegra30 build support 2013-01-16 13:40:08 -07:00
sh_pfc.h sh: Add support pin function control using GPIO 2012-08-08 10:24:41 +09:00
sh_tmu.h arm: rmobile: Add support TMU base timer function 2012-10-03 02:04:24 +02:00
sha1.h sha1: Use const where possible, and unsigned for input len 2012-12-11 13:17:33 -07:00
sha256.h sha256: Use const where possible and add watchdog function 2012-12-11 13:17:33 -07:00
sja1000.h
slre.h Add SLRE - Super Light Regular Expression library 2013-05-01 16:24:00 -04:00
sm501.h
smiLynxEM.h
sound.h Sound: Support for MAX98095 codec in driver 2013-03-08 22:34:18 +09:00
spartan2.h
spartan3.h fpga: add definition for Xilinx Spartan-6 XC6SLX4 2012-01-05 16:18:30 +01:00
spd_sdram.h
spd.h
spi_flash.h sf: Enable FDT-based configuration and memory mapping 2013-03-19 08:45:37 -07:00
spi.h spi: Add support for preamble bytes 2013-06-03 00:04:40 +05:30
spl.h SPL: ONENAND: Support SPL to boot u-boot from OneNAND. 2013-03-11 11:05:49 -04:00
status_led.h nios2: remove asm/status_led.h 2012-11-10 19:45:58 +08:00
stdio_dev.h serial: arm_dcc: Remove CONFIG_ARM_DCC_MULTI option 2013-02-04 09:14:21 -05:00
stratixII.h
sym53c8xx.h Consolidate bool type 2013-04-01 16:33:52 -04:00
systemace.h
tegra-kbc.h tegra: Add tegra keyboard driver 2012-05-15 08:31:40 +02:00
timestamp.h
tis.h tpm: Add TPM command library 2013-04-12 14:13:13 -07:00
tmu.h Exynos5: TMU: Add driver for Thermal Management Unit 2013-03-12 17:06:03 +09:00
tpm.h tpm: Add TPM command library 2013-04-12 14:13:13 -07:00
tps6586x.h i2c: Add TPS6586X driver 2012-05-15 08:31:37 +02:00
tsec.h
tsi108.h
tsi148.h
twl4030.h twl4030: add gpio register offsets 2012-12-20 17:04:21 +01:00
twl6030.h
twl6035.h power: twl6035: complain on LDO9 error 2012-12-10 12:45:35 -07:00
tws.h
ubi_uboot.h ubi: Expose a few simple functions from the cmd_ubi 2013-04-11 15:52:54 -04:00
universe.h
usb_cdc_acm.h
usb_defs.h usb: fix: Fixing Port status and feature number constants 2013-05-06 02:16:36 +02:00
usb_ether.h net: introduce transparent driver private in ueth_data 2012-09-26 12:36:29 -05:00
usb_mass_storage.h usb:gadget: USB Mass Storage Gadget support 2013-03-18 18:58:53 +01:00
usb.h USB: SS: Add support for Super Speed USB interface 2013-05-05 23:54:22 +02:00
usbdescriptors.h Enable high speed support for USB device framework and usbtty 2012-03-28 16:31:08 +02:00
usbdevice.h Consolidate bool type 2013-04-01 16:33:52 -04:00
version.h
video_ad7176.h
video_ad7177.h
video_ad7179.h
video_easylogo.h
video_fb.h
video_font_data.h font: split font data from video_font.h 2011-11-15 23:58:26 +01:00
video_font.h font: split font data from video_font.h 2011-11-15 23:58:26 +01:00
video_logo.h
video.h video: Provide an API to access video parameters 2012-11-06 22:57:32 +01:00
virtex2.h
vsc7385.h
vsprintf.h vsprintf: Move function documentation into header file 2011-12-17 23:34:01 +01:00
vxworks.h ppc4xx: Remove IOP480 support 2012-10-15 11:53:59 -07:00
w83c553f.h
watchdog.h blackfin: Move blackfin watchdog driver out of the blackfin arch folder. 2013-05-13 16:30:26 +08:00
xilinx.h
xyzModem.h Consolidate bool type 2013-04-01 16:33:52 -04:00
zfs_common.h cmd_zfs: use common get_device_and_partition function 2012-09-25 14:49:17 -07:00