Commit Graph

1658 Commits

Author SHA1 Message Date
Jan Kiszka
3317b988b1 ARM: Put target PC for PSCI CPU_ON on per-CPU stack
Use a per-CPU variable for saving the target PC during CPU_ON
operations. This allows us to run this service independently on targets
that have more than 2 cores and also core-local power control.

CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:14 -07:00
Jan Kiszka
4c681a3d22 ARM: Factor out reusable psci_get_cpu_stack_top
This algorithm will be useful on Tegra as well, plus we will need it for
making _psci_target_pc per-CPU.

CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:14 -07:00
Jan Kiszka
4ce4de1e66 ARM: Factor out reusable psci_cpu_entry
_sunxi_cpu_entry can be converted completely into a reusable
psci_cpu_entry. Tegra124 will use it as well.

As with psci_disable_smp, also the enabling is designed to be overloaded
in cased SMP is not controlled via ACTLR.

CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:13 -07:00
Jan Kiszka
b0206e7d26 ARM: Factor out reusable psci_cpu_off_common
Move parts of sunxi's psci_cpu_off into psci_cpu_off_common, namely
cache disabling and flushing, clrex and the disabling of SMP for the
dying CPU. These steps are apparently generic for ARMv7 and will be
reused for Tegra124 support.

As the way of disabled SMP is not architectural, though commonly done
via ACLTR, the related function can be overloaded.

CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:13 -07:00
Jan Kiszka
680f396851 ARM: Factor out common psci_get_cpu_id
Will be required for obtaining the ID of the current CPU in shared PSCI
functions. The default implementation requires a dense ID space and only
supports a single cluster. Therefore, the functions can be overloaded in
cases where these assumptions do not hold.

CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:13 -07:00
Jan Kiszka
104d6fb6cd ARM: Clean up CONFIG_ARMV7_NONSEC/VIRT/PSCI conditions
CONFIG_ARMV7_VIRT depends on CONFIG_ARMV7_NONSEC, thus doesn't need to
be taken into account additionally. CONFIG_ARMV7_PSCI is only set on
boards that support CONFIG_ARMV7_NONSEC, and it only works on those.

CC: Tang Yuantian <Yuantian.Tang@freescale.com>
CC: York Sun <yorksun@freescale.com>
CC: Steve Rae <srae@broadcom.com>
CC: Andre Przywara <andre.przywara@linaro.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Tested-by: Alison Wang <alison.wang@freescale.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2015-05-13 09:24:13 -07:00
Joe Hershberger
a26cd04920 arch: Make board selection choices optional
By making the board selections optional, every defconfig will include
the board selection when running savedefconfig so if a new board is
added to the top of the list of choices the former top's defconfig will
still be correct.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Cc: Tom Rini <trini@konsulko.com>
2015-05-12 18:10:02 -04:00
Masahiro Yamada
55ce920d5f ARM: socfpga: abolish CONFIG_SOCFPGA
Replace CONFIG_SOCFPGA with CONFIG_ARCH_SOCFPGA.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-07 05:21:17 +02:00
Masahiro Yamada
05a217212b ARM: socfpga: move SoC sources to mach-socfpga
Our recent trend is to collect SoC files into arch/arm/mach-(SOC).

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-07 05:21:12 +02:00
Masahiro Yamada
a02a669c11 ARM: socfpga: remove redundant config.mk
Because all the SOCFPGA boards define CONFIG_SPL_FRAMEWORK
(see include/configs/socfpga_common.h), u-boot.img is automatically
added to the target image list by the top Makefile.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-07 05:19:29 +02:00
Masahiro Yamada
cc25d85be3 ARM: socfpga: do not add board directory to header search path
The compiler option "-Iboard/$(VENDOR)/$(BOARD)" just exists here
for iocsr_config.c to be able to include iocsr_config.h.

Use "..." instead of <...> to include a header in the same directory.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-07 05:19:29 +02:00
Tom Rini
1131d4e22c Merge git://git.denx.de/u-boot-marvell 2015-05-05 10:32:08 -04:00
Stefan Roese
350b50eea3 arm: armada-xp: Move SoC sources to mach-mvebu
Move arch/arm/cpu/armv7armada-xp/* -> arch/arm/mach-mvebu/*

Since this platform will be extended to support other Marvell SoC's as
well, lets rename it directly to mvebu.

This will be used by the upcoming Armada 38x suport (A38x).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Kevin Smith <kevin.smith@elecsyscorp.com>
Tested-by: Dirk Eibach <dirk.eibach@gdsys.cc>
2015-05-05 14:28:29 +02:00
Tom Rini
3f2f1a0039 Merge branch 'master' of git://git.denx.de/u-boot-arm 2015-05-05 07:00:11 -04:00
Albert ARIBAUD
b939689c7b Merge branch 'u-boot/master' into 'u-boot-arm/master' 2015-05-05 10:09:06 +02:00
Hans de Goede
fd01ae1384 sunxi: usb: Protect phy-init and phy-power-on against multiple calls
Once we add support for the ohci controller the phy-init and phy-power-on
functions may be called twice (once by the ehci code and once by the ohci
code) protect them against this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
e13afeef6f sunxi: usb: Do not call phy_probe from hcd code
The 2/3 usb-phys on the sunxi SoCs are really a single separate functional
block, and are modelled as such in devicetree. So once we've moved all the
sunxi usb code to the driver-model then phy_probe will be called once
for the entire block from the driver-model enumeration code.

Move to this now as this also avoids problems with phy_probe being called
multiple times once we introduce ohci support. This also allows us to get rid
of the sunxi_usb_phy_enabled_count variable as phy_probe now is guaranteed
to be called only once.

Since we're effectively rewriting the probe / remove functions, move them
to the end of the file while we are at it, as that is the most logical place
for them.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
2aacc4239c sunxi: usb: Rename the usbc.? files to usb_phy.?
The usbc.? files now only contain usb-phy related code, rename them to make
this clear.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
7b798658b2 sunxi: usb: Rename sunxi_usbc_foo functions to sunxi_usb_phy_bar
Rename the sunxi_usbc_foo functions to sunxi_usb_phy_bar to make it clear
that these are usb-phy functions. Also change the verbs & nouns in the suffix
to match the verbs & nouns used in the Linux kernels generic phy framework.

This patch purely renames things, it contains no functional changes.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:55 +02:00
Hans de Goede
a781c97aaa sunxi: usb: Remove sunxi_usbc_get_io_base function
This is the only function left in sunxi/usbc.c which is not phy related,
so remove it.

This is a preparation patch for turning the usbc.c code into a proper
usb phy driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:54 +02:00
Hans de Goede
375de01702 sunxi: usb: Move setup of host controller clocks to the host controller drivers
The sunxi "usbc" code is mostly about phy setup, but currently also sets up
the host controller clocks, which is something which really belongs in the
host controller drivers, so move it there.

This is a preparation patch for moving the sunxi ehci code to the driver
model and for adding ohci support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:54 +02:00
Hans de Goede
d17e1577a2 sunxi: emac: Remove non driver-model code
All sunxi boards now use the driver-model, so remove the non driver-model
code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:54 +02:00
Hans de Goede
939ed1cba8 sunxi: emac: Add driver model support
Modify the sunxi-emac eth driver to support driver model.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Stefan Roese <sr@denx.de>
2015-05-04 16:51:53 +02:00
Hans de Goede
a536077def sunxi: axp: Add support for i2c based PMICs to the pmic-bus helpers
Add support for the axp152 and axp209 PMICs to the pmic register access
helpers. This is a preparation patch for moving the axp gpio code to a
separate gpio driver.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:53 +02:00
Hans de Goede
1d624a4f08 sunxi: axp: Move axp pmic register helpers to a separate file
Move the register helpers used to access the registers via p2wi resp.
rsb bus on the otherwise identical axp221 and axp223 pmics to a separate
file, so that they can be used by the upcoming standalone axp gpio driver
too.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:53 +02:00
Hans de Goede
a725426929 sunxi: usbc: Fix vbus gpio handling to work with the driver-model
The driver-model gpio functions may return another value then -1 as error,
make the sunxi usbc properly handle this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:52 +02:00
Vishnu Patekar
8c3dacff14 sunxi: Add basic A33 basic support
Enable full support for the A33 SoC including display, otg-usb, etc.

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:51 +02:00
Vishnu Patekar
ffc0ae0c70 sunxi: Add a33 dram init code
Based on Allwinner dram init code from the a33 bsp:
https://github.com/allwinner-zh/bootloader/blob/master/basic_loader/bsp/bsp_for_a33/init_dram/mctl_hal.c

Initial u-boot port by Vishnu Patekar, major cleanup / rewrite by
Hans de Goede.

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:51 +02:00
Hans de Goede
886a7b45ef sunxi: Add support for A33 PLL11 (second DRAM pll)
Add support for the new second DRAM PLL found on the A33 SoC.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:51 +02:00
Hans de Goede
5e6bacdb84 sunxi: s/sun8i/sun8i_a23/
This is a preparation patch for adding A33 support, which will have a
mach name of sun8i-a33.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:51 +02:00
Hans de Goede
44d8ae5b69 sunxi: Introduce a hidden SUNXI_GEN_SUNxI Kconfig bool
sun6i and newer (derived) SoCs such as the sun8i-a23, sun8i-a33 and sun9i
have a various things in common, like having separate ahb reset control
registers, the SID living inside the pmic, custom pmic busses, new style
watchdog, etc.

This commit introduces a new hidden SUNXI_GEN_SUN6I Kconfig bool which can be
used to check for these features avoiding the need for an ever growing list
of "#if defined CONFIG_MACH_SUN?I" conditionals as we add support for more
"new style" sunxi SoCs.

Note that this commit changes the behavior of the gmac and hdmi code for
sun8i and the upcoming sun9i devices. This does not matter as sun8i does
not have gmac nor hdmi, and sun9i has new hardware-blocks for these so
the old code will not work there.

Also this is intentional as if a sun8i / sun9i variant which does use the
old hwblocks shows up then the GEN_SUN6I code paths will be the right ones
to use.

For completeness this also adds a SUNXI_GEN_SUN4I bool for A10/A13/A20.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 16:51:51 +02:00
Hans de Goede
929b2622eb sunxi: usbc: Remove unused irq field
We do not use irqs in u-boot so remove the unused irq field, and all the
 #ifdef-ery around the irq initialization.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 11:59:21 +02:00
Hans de Goede
92bcc6cb1e sunxi: Also set Auxiliary Ctl SMP bit in SPL
There is no reason not to and this make the #ifdef-ery easier to read.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2015-05-04 11:59:21 +02:00
Jan Kiszka
dcfa530f09 sun7i: Remove duplicate call to psci_arch_init
This is already invoked a few cycles later in monitor mode by
_secure_monitor (_sunxi_cpu_entry calls _do_nonsec_entry which triggers
_secure_monitor via smc #0). Drop it here, it serves no purpose.

CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-05-02 11:50:19 +02:00
Tom Rini
ace97d2617 Merge branch 'zynq' of git://www.denx.de/git/u-boot-microblaze 2015-04-29 06:46:33 -04:00
Masahiro Yamada
0107f24036 ARM: zynq: move SoC sources to mach-zynq
Move arch/arm/cpu/armv7/zynq/* -> arch/arm/mach-zynq/*

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-04-29 11:19:05 +02:00
Masahiro Yamada
7472a5dfcb ARM: zynq: pass "-mfpu=neon" only to lowlevel_init.S
The comment line in arch/arm/cpu/armv7/zynq/config.mk says that
the option "-mfpu=neon" is necessary for compiling lowlevel_init.S.
We do not have to give it to all the source files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-04-29 11:19:05 +02:00
Siva Durga Prasad Paladugu
a7858f62d7 zynq: timer: Fix wrong timer calculation
Fix wrong timer calculation in get_timer_masked incase of
overflow.
This fixes the issue of getting wrong time from get_timer()
calls.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-04-29 11:19:03 +02:00
Siva Durga Prasad Paladugu
f25f552aab zynq: slcr: Disable all level shifters
Disable all level shifters before enabling
the PS-to-PL level shifters as it would
be good to disable all level shifters before
enabling the PS-to-PL in order to ensure that
it is in proper state

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-04-29 11:19:02 +02:00
Masahiro Yamada
e7fa7d5c73 ARM: zynq: drop legacy ps7_init.c/h support
We are about to change the location for ps7_init files, breaking the
current work-flows.  It is good time to drop the legacy ps7_init.c/h
support.

Going forward, please use ps7_init_gpl.c/h all the time.
If you are still using old Xilinx tools that are only able to
generate ps7_init.c/h, rename them into ps7_init_gpl.c/h.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Suggested-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-04-29 11:19:02 +02:00
Nathan Rossi
7a1aec8de8 zynq: Add Zynq PicoZed board support
The PicoZed is a System-on-Module board which is marketed as part of
the ZedBoard/MicroZed/etc. collection. It includes a Zynq-7000
processor.

This patch adds support that covers all the variants of the PicoZed
including the SKUs with Z7010/Z7020 and Z7015/Z7030 Zynq chips. This
patch set however only covers support for the System-on-Module and does
not cover any extra components that are available on carrier boards
(except those that are fanned out of the module itself).

More information on this board, its variants and available carrier
boards is available at: http://zedboard.org/product/picozed

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-04-29 11:19:02 +02:00
Tom Rini
536266231a Merge branch 'master' of git://www.denx.de/git/u-boot-socfpga 2015-04-28 20:48:43 -04:00
Tom Rini
e536ab8849 Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2015-04-28 12:15:13 -04:00
Tom Rini
3f6dcdb9cd Merge branch 'master' of git://git.denx.de/u-boot-fsl-qoriq 2015-04-24 13:43:24 -04:00
Jaiprakash Singh
39b0bbbb23 driver/ifc: Add 64KB page support
IFC has two register pages.Till IFC version 1.4 each
register page is 4KB each.But IFC ver 2.0 register page
size is 64KB each.IFC regiters structure is break into
two viz FCM and RUNTIME.FCM(Flash control machine) registers
are defined in PAGE0 and controls IFC generic functionality.
RUNTIME registers are defined in PAGE1 and controls NAND and
GPCM funcinality.

FCM and RUNTIME structures defination is common for IFC
version 1.4 and 2.0.

Signed-off-by: Jaiprakash Singh <b44839@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
2015-04-23 16:46:50 -07:00
Stefan Agner
7a90a1f260 ARM: vf610: Enable caches
Enables caches which provides a rather huge speedup of the boot loader.
Also mark the on-chip RAM as cachable since this is the area U-Boot runs
from.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2015-04-23 14:56:09 -04:00
Sanchayan Maity
1db503c4b9 ARM: vf610: Add SoC and CPU type detection
Vybrid product family consists of several rather similar SoC which
can be determined by softare during boot time. This allows use of
variable ${soc} for Linux device tree files. Detect VF5xx CPU's by
reading the CPU count register. We can determine the second number
of the CPU type (VF6x0) which indicates the presence of a L2 cache.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2015-04-23 14:56:08 -04:00
Dileep Katta
ecd8557937 fastboot: ARM: OMAP5: Enable reboot-bootloader
Implemented fb_set_reboot_flag() for OMAP5 to set
an environment variable 'dofastboot' when reboot-bootloader called.

This environment variable will be checked in boot command and fastboot
will be called if the variable is set.
If the bootcmd env variable of OMAP5 common is overwritten with board-specific
command, then these changes will not apply.

This was originally intended for DRA7 platform, but now applies to all OMAP5.

Ref:
http://git.omapzoom.org/?p=repo/u-boot.git;a=commit;h=19da2e436e9806259cf1f4988b9e046ab256bf2c

Signed-off-by: Angela Stegmaier <angelabaker@ti.com>
Signed-off-by: Dileep Katta <dileep.katta@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
[trini: Make it check for !CONFIG_ENV_IS_NOWHERE as we can't saveenv()
in that case]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-04-23 14:55:44 -04:00
Dileep Katta
f12467d1a5 ARM: DRA7: Set serial number environment variable
This patch populates serial number environment variable from
die_id_0 and die_id_1 register values for DRA7xx boards.

The function is added in omap common code so that this can be re-used.

Serial# environment variable will be useful to show correct
information in "fastboot devices" commands.

Ref:
http://git.omapzoom.org/?p=repo/u-boot.git;a=commit;h=a6bcaaf67f6e4bcd97808f53d0ceb4b0c04d583c

Signed-off-by: Angela Stegmaier <angelabaker@ti.com>
Signed-off-by: Dileep Katta <dileep.katta@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2015-04-23 13:59:19 -04:00
Tim Harvey
78c5a18087 arm: mx6: ddr: add pd_fast_exit flag to system information
DDR3 has a special Precharge power-down mode: fast-exit vs slow-exit.

In slow-exit mode the DLL is off but in some quiescent state that makes it easy
to turn on again in tXPDLL cycles (about 10tCK) vs the full tDLLK (512tCK).
In fast-exist mode the DLL is maintained such that it is ready again in about
3tCK.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-04-22 14:35:35 +02:00