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Lokesh Vutla 38f25b125e OMAP4+: Force DDR in self-refresh after warm reset 
Errata ID:i727

Description: The refresh rate is programmed in the EMIF_SDRAM_REF_CTRL[15:0]
REG_REFRESH_RATE parameter taking into account frequency of the device.
When a warm reset is applied on the system, the OMAP processor restarts
with another OPP and so frequency is not the same. Due to this frequency
change, the refresh rate will be too low and could result in an unexpected
behavior on the memory side.

Workaround:
The workaround is to force self-refresh when coming back from the warm reset
with the following sequence:
• Set EMIF_PWR_MGMT_CTRL[10:8] REG_LP_MODE to 0x2
• Set EMIF_PWR_MGMT_CTRL[7:4] REG_SR_TIM to 0x0
• Do a dummy read (loads automatically new value of sr_tim)
This will reduce the risk of memory content corruption, but memory content
can't be guaranteed after a warm reset.

This errata is impacted on
OMAP4430: 1.0, 2.0, 2.1, 2.2, 2.3
OMAP4460: 1.0, 1.1
OMAP4470: 1.0
OMAP5430: 1.0

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Senthilvadivu Guruswamy <svadivu@ti.com>
2012-07-07 14:07:35 +02:00
..
arch-a320 ftsmc020: move ftsmc020 static mem controller to driver/mtd 2011-04-27 19:38:10 +02:00
arch-am33xx ARM: OMAP3+: Detect reset type 2012-07-07 14:07:34 +02:00
arch-arm720t ARM: remove broken "impa7" board. 2011-09-07 21:46:40 +02:00
arch-armada100 USB: Armada100: EHCI Driver for Armada100 SOCs 2012-03-19 00:08:26 +01:00
arch-armv7 ARMV7: Versatile Express Coretile CortexA9x4 support 2010-10-13 09:59:39 +02:00
arch-at91 ATMEL/PIO: Enable new feature of PIO on Atmel device 2012-07-07 14:07:30 +02:00
arch-davinci Changes to move hawkboard to the new spl infrastructure 2012-02-12 10:11:33 +01:00
arch-ep93xx Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-exynos EXYNOS5: PINMUX: Added default pinumx settings 2012-07-07 14:07:25 +02:00
arch-imx Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-ixp IXP: Fix GPIO_INT_ACT_LOW_SET() 2012-03-26 23:09:26 +02:00
arch-kirkwood arm/kirkwood: protect the ENV_SPI #defines 2012-07-07 14:07:33 +02:00
arch-ks8695 Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-lpc32xx serial: add LPC32X0 high-speed UART devices support 2012-05-15 08:31:21 +02:00
arch-lpc2292 Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-mb86r0x arm: auto gen asm-offsets.h for mb86r0x 2011-08-04 13:56:55 +02:00
arch-mx5 mx53: Allow IPUv3 driver to also work on mx53 2012-05-25 10:36:29 +02:00
arch-mx6 i.mx: i.mx6x: NO_MUX_I/NO_PAD_I not set correctly 2012-07-07 14:07:25 +02:00
arch-mx25 i.MX2: Include asm/types.h in arch-mx25/imx-regs.h 2012-05-15 08:31:34 +02:00
arch-mx27 mmc: access mxcmmc from mx31 boards 2012-02-12 10:11:26 +01:00
arch-mx28 MX28: Fix a typo in mx28_reg_8 macro 2012-07-07 14:07:27 +02:00
arch-mx31 tt01: add video support 2012-02-27 21:19:25 +01:00
arch-mx35 imx: Remove unneeded/repititive definitions from imx headers 2012-04-16 14:53:59 +02:00
arch-nomadik Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-omap3 ARM: OMAP3+: Detect reset type 2012-07-07 14:07:34 +02:00
arch-omap4 OMAP4+: Force DDR in self-refresh after warm reset 2012-07-07 14:07:35 +02:00
arch-omap5 OMAP4+: Force DDR in self-refresh after warm reset 2012-07-07 14:07:35 +02:00
arch-omap24xx arch/arm/include/asm/sizes.h: cleanups 2010-10-13 09:59:33 +02:00
arch-orion5x orion5x: add USB host ehci-marvell support 2012-02-12 10:11:28 +01:00
arch-pantheon pantheon: define CONFIG_SYS_CACHELINE_SIZE 2011-11-03 22:56:22 +01:00
arch-pxa pxa: convert pxa27x_udc to use read and write functions 2011-12-11 14:41:14 +01:00
arch-s3c24x0 Convert ISO-8859 files to UTF-8 2011-08-04 23:34:02 +02:00
arch-s3c44b0 Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-s3c64xx Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-s3c4510b Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-s5pc1xx Exynos: fix cpuinfo and cpu detecting 2012-07-07 14:07:25 +02:00
arch-sa1100 Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-spear i2c: Add support for designware i2c controller 2012-04-24 09:56:37 +02:00
arch-tegra2 arm: Tegra: Use ODMDATA from BCT in IRAM 2012-07-07 14:07:21 +02:00
arch-tnetv107x ARM1176: TI: TNETV107X soc initial support 2010-06-08 10:07:17 -05:00
arch-u8500 Minor coding style cleanup 2011-06-02 23:18:32 +02:00
proc-armv Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
armv7.h omap5: Add minimal support for omap5430. 2011-11-15 22:25:50 +01:00
assembler.h arm: Use optimized memcpy and memset from linux 2011-04-27 19:38:07 +02:00
atomic.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
bitops.h arm: add __ilog2 function 2011-07-16 13:00:11 +02:00
bootm.h arm: Add Prep subcommand support to bootm 2012-03-27 22:05:29 +02:00
byteorder.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
cache.h arm: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment 2011-10-23 20:50:42 +02:00
config.h Replace CONFIG_RELOC_FIXUP_WORKS by CONFIG_NEEDS_MANUAL_RELOC 2010-10-29 21:32:07 +02:00
dma-mapping.h Fix Stelian's email address 2011-11-29 15:43:38 +01:00
ehci-omap.h ehci-omap: Clean up added ehci-omap.c 2012-02-12 10:11:31 +01:00
emif.h OMAP5: EMIF: Add support for DDR3 device 2012-07-07 14:07:24 +02:00
errno.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
global_data.h fdt: ARM: Add device tree control of U-Boot (CONFIG_OF_CONTROL) 2011-10-26 21:37:17 +02:00
gpio.h gpio: Replace ARM gpio.h with the common API in include/asm-generic 2012-01-09 20:10:32 -06:00
hardware.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
io.h ARM: fix write*() I/O accessors 2011-02-21 08:30:55 +01:00
linkage.h arm: adapt asm/linkage.h from Linux 2012-05-15 08:31:26 +02:00
mach-types.h omap5: Add minimal support for omap5430. 2011-11-15 22:25:50 +01:00
macro.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
memory.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
omap_common.h OMAP5: ADD chip detection for OMAP5432 SOC 2012-07-07 14:07:23 +02:00
omap_gpio.h omap: gpio: Use generic API 2011-09-13 08:25:15 +02:00
pl310.h armv7: add PL310 support to u-boot 2011-07-04 10:55:25 +02:00
posix_types.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
processor.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
ptrace.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
setup.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
sizes.h arch/arm/include/asm/sizes.h: cleanups 2010-10-13 09:59:33 +02:00
string.h arm: Use optimized memcpy and memset from linux 2011-04-27 19:38:07 +02:00
system.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
types.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
u-boot-arm.h arm: Move CP15 init out of cpu_init_crit() 2011-12-09 17:30:09 +01:00
u-boot.h net: punt bd->bi_ip_addr 2012-05-15 17:32:05 -05:00
unaligned.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
utils.h armv7: cache maintenance operations for armv7 2011-07-04 10:55:25 +02:00