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1579c7b9fe
linux/arch/arm/mach-imx
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Martin Fuzzey 1579c7b9fe ARM: imx53: Set DDR pins to high impedance when in suspend to RAM. 
In order to save power the DDR pins should be put into high
impedance when in suspend to RAM.

This requires manually requesting self refresh (rather than using the
automatic mode implemented by the CCM / ESDCTL), followed by
reconfiguring the IOMUXC.

Of course the code to do this cannot itself run from DDR so the
code is copied to and executed from internal memory.

In my tests using a custom i.MX53 board with LPDDR2 RAM
this reduced the suspend power consumption from 200mW to 60mW.

Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2015-06-03 14:49:36 +08:00
..
devices ARM: mx25: Remove imxdi_rtc platform code 2015-03-13 22:14:58 +08:00
3ds_debugboard.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
3ds_debugboard.h ARM: imx: include board headers in the same folder 2012-10-15 09:18:14 +08:00
anatop.c ARM: imx: add msl support for imx7d 2015-06-03 14:49:35 +08:00
avic.c ARM: imx: avic: Convert to handle_domain_irq 2014-09-03 13:10:56 +00:00
board-mx31lilly.h ARM: imx: include board headers in the same folder 2012-10-15 09:18:14 +08:00
board-mx31lite.h ARM: imx: include board headers in the same folder 2012-10-15 09:18:14 +08:00
board-mx31moboard.h ARM: imx: include board headers in the same folder 2012-10-15 09:18:14 +08:00
common.h ARM: imx53: Set DDR pins to high impedance when in suspend to RAM. 2015-06-03 14:49:36 +08:00
cpu-imx5.c ARM: imx5: retrieve iim base from device tree 2014-07-18 16:10:07 +08:00
cpu-imx25.c ARM: mx25: Retrieve IIM base from dt 2015-03-13 22:06:35 +08:00
cpu-imx27.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
cpu-imx31.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
cpu-imx35.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
cpu.c ARM: imx: add msl support for imx7d 2015-06-03 14:49:35 +08:00
cpuidle-imx5.c cpuidle: Invert CPUIDLE_FLAG_TIME_VALID logic 2014-11-12 21:17:27 +01:00
cpuidle-imx6q.c ARM: imx6: set initial power mode in pm function 2015-06-03 14:44:31 +08:00
cpuidle-imx6sl.c ARM: imx6: set initial power mode in pm function 2015-06-03 14:44:31 +08:00
cpuidle-imx6sx.c ARM: imx6: set initial power mode in pm function 2015-06-03 14:44:31 +08:00
cpuidle.h ARM: imx: support arm power off in cpuidle for i.mx6sx 2015-01-05 21:34:29 +08:00
crmregs-imx3.h
devices-imx1.h ARM: imx: move platform device code into mach-imx 2012-10-15 09:18:15 +08:00
devices-imx21.h ARM: imx: move platform device code into mach-imx 2012-10-15 09:18:15 +08:00
devices-imx27.h ARM : i.MX27 : split code for allocation of ressources of camera and eMMA 2012-11-16 16:21:48 +01:00
devices-imx31.h ARM: imx: move platform device code into mach-imx 2012-10-15 09:18:15 +08:00
devices-imx35.h ARM: imx: prepare for removal of flexcan_platform_data 2013-06-27 15:15:08 +02:00
ehci-imx27.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
ehci-imx31.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
ehci-imx35.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
ehci.h ARM: imx5: remove imx51 non-DT support files 2014-07-18 16:10:05 +08:00
epit.c ARM: imx: remove IRQF_DISABLED 2013-10-21 09:11:05 +08:00
eukrea_mbimxsd35-baseboard.c ARM: imx/iomux-v3: allow pad_list to be const 2015-03-03 12:04:41 +08:00
eukrea-baseboards.h ARM: i.MX: Remove mach-cpuimx27sd board file 2014-09-01 22:00:01 +08:00
gpc.c ARM: imx: Constify irq_domain_ops 2015-06-03 14:49:33 +08:00
hardware.h ARM: imx: move revision definitions and declarations into a header 2015-06-03 14:44:30 +08:00
headsmp.S ARM: imx6: drop .text.head section annotation from headsmp.S 2014-03-05 10:48:26 +08:00
hotplug.c ARM: imx: do not return from imx_cpu_die() call 2013-10-21 09:37:31 +08:00
iim.h ARM: imx: include iim.h rather than mach/iim.h 2012-10-15 10:03:10 +08:00
imx1-dt.c ARM: i.MX1: Add devicetree support 2014-09-16 10:06:44 +08:00
imx27-dt.c ARM: imx: clean up machine mxc_arch_reset_init_dt reset init 2014-11-22 07:39:36 +08:00
imx31-dt.c ARM: imx: clean up machine mxc_arch_reset_init_dt reset init 2014-11-22 07:39:36 +08:00
imx35-dt.c ARM: imx: clean up machine mxc_arch_reset_init_dt reset init 2014-11-22 07:39:36 +08:00
iomux-imx31.c ARM: imx: refactor mxc_iomux_mode() 2014-11-22 07:39:36 +08:00
iomux-mx1.h ARM: imx: move iomux drivers and headers into mach-imx 2012-10-15 09:18:14 +08:00
iomux-mx2x.h ARM: imx: move iomux drivers and headers into mach-imx 2012-10-15 09:18:14 +08:00
iomux-mx3.h ARM: imx: Fix trivial typo in comments 2015-03-03 12:05:46 +08:00
iomux-mx21.h ARM: imx: move iomux drivers and headers into mach-imx 2012-10-15 09:18:14 +08:00
iomux-mx27.h ARM: imx: move iomux drivers and headers into mach-imx 2012-10-15 09:18:14 +08:00
iomux-mx35.h ARM: imx: move iomux drivers and headers into mach-imx 2012-10-15 09:18:14 +08:00
iomux-v1.c ARM: imx: iomux: Do not export symbol without public declaration 2014-09-01 22:00:01 +08:00
iomux-v1.h ARM: imx: move iomux drivers and headers into mach-imx 2012-10-15 09:18:14 +08:00
iomux-v3.c ARM: imx/iomux-v3: allow pad_list to be const 2015-03-03 12:04:41 +08:00
iomux-v3.h ARM: imx: Fix trivial typo in comments 2015-03-03 12:05:46 +08:00
irq-common.c ARM: imx: irq-common: Include header to avoid sparse warning 2013-06-17 15:45:14 +08:00
irq-common.h ARM: imx: drop support for irq priorisation 2013-12-09 13:18:25 +08:00
Kconfig ARM: imx: add msl support for imx7d 2015-06-03 14:49:35 +08:00
mach-apf9328.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-armadillo5x0.c arm: mach-imx: Convert pr_warning to pr_warn 2014-09-16 10:09:41 +08:00
mach-bug.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-cpuimx35.c ARM: imx/iomux-v3: allow pad_list to be const 2015-03-03 12:04:41 +08:00
mach-imx6q.c ARM: imx6: initialize CCM_CLPCR_LPM into RUN mode earlier 2015-06-03 14:49:18 +08:00
mach-imx6sl.c ARM: imx6: initialize CCM_CLPCR_LPM into RUN mode earlier 2015-06-03 14:49:18 +08:00
mach-imx6sx.c ARM: imx6: initialize CCM_CLPCR_LPM into RUN mode earlier 2015-06-03 14:49:18 +08:00
mach-imx7d.c ARM: imx: add msl support for imx7d 2015-06-03 14:49:35 +08:00
mach-imx25.c ARM: mx25: Remove static memory mapping 2015-03-13 22:14:57 +08:00
mach-imx27_visstrim_m10.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
mach-imx50.c ARM: imx: clean up machine mxc_arch_reset_init_dt reset init 2014-11-22 07:39:36 +08:00
mach-imx51.c ARM: imx: clean up machine mxc_arch_reset_init_dt reset init 2014-11-22 07:39:36 +08:00
mach-imx53.c ARM: SoC platform changes for 3.19 2014-12-09 14:38:28 -08:00
mach-kzm_arm11_01.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-ls1021a.c ARM: imx: Add Freescale LS1021A SMP support 2014-11-23 14:56:21 +08:00
mach-mx21ads.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-mx27_3ds.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
mach-mx27ads.c platform: Remove most references to platform_bus device 2014-07-23 19:09:03 -07:00
mach-mx31_3ds.c arm: mach-imx: Convert pr_warning to pr_warn 2014-09-16 10:09:41 +08:00
mach-mx31ads.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-mx31lilly.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
mach-mx31lite.c arm: mach-imx: Convert pr_warning to pr_warn 2014-09-16 10:09:41 +08:00
mach-mx31moboard.c ARM: imx: use PTR_ERR_OR_ZERO 2014-07-18 16:11:36 +08:00
mach-mx35_3ds.c ARM: imx/iomux-v3: allow pad_list to be const 2015-03-03 12:04:41 +08:00
mach-pca100.c ARM: imx: move EHCI platform defines out of platform_data header 2014-07-18 16:10:04 +08:00
mach-pcm037_eet.c ARM: imx: include common.h rather than mach/common.h 2012-10-15 10:03:10 +08:00
mach-pcm037.c arm: mach-imx: Convert pr_warning to pr_warn 2014-09-16 10:09:41 +08:00
mach-pcm043.c ARM: imx/iomux-v3: allow pad_list to be const 2015-03-03 12:04:41 +08:00
mach-qong.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-scb9328.c ARM: i.MX: Setup IRQ handler from IRQ driver 2014-05-12 22:58:51 +08:00
mach-vf610.c ARM vf610: add compatibilty strings of supported Vybrid SoC's 2015-01-05 20:53:05 +08:00
mach-vpr200.c ARM: imx/iomux-v3: allow pad_list to be const 2015-03-03 12:04:41 +08:00
Makefile ARM: imx53: Set DDR pins to high impedance when in suspend to RAM. 2015-06-03 14:49:36 +08:00
mm-imx1.c ARM: imx: move clk_prepare() out from mxc_restart() 2013-06-17 15:45:10 +08:00
mm-imx3.c Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2013-07-03 09:46:29 -07:00
mm-imx21.c ARM: imx: move clk_prepare() out from mxc_restart() 2013-06-17 15:45:10 +08:00
mm-imx27.c ARM: imx: move clk_prepare() out from mxc_restart() 2013-06-17 15:45:10 +08:00
mmdc.c ARM: imx: mmdc: Include "common.h" header file 2015-06-03 14:49:34 +08:00
mx1.h ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
mx2x.h ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
mx3x.h ARM: imx: move revision definitions and declarations into a header 2015-06-03 14:44:30 +08:00
mx21.h ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
mx27.h ARM: imx: move revision definitions and declarations into a header 2015-06-03 14:44:30 +08:00
mx31.h ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
mx31lilly-db.c ARM: imx: remove IRQF_DISABLED 2013-10-21 09:11:05 +08:00
mx31lite-db.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
mx31moboard-devboard.c ARM: imx: use PTR_ERR_OR_ZERO 2014-07-18 16:11:36 +08:00
mx31moboard-marxbot.c ARM: imx: use PTR_ERR_OR_ZERO 2014-07-18 16:11:36 +08:00
mx31moboard-smartbot.c ARM: imx: use PTR_ERR_OR_ZERO 2014-07-18 16:11:36 +08:00
mx35.h ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
mxc.h ARM: imx: add msl support for imx7d 2015-06-03 14:49:35 +08:00
pcm037.h
platsmp.c ARM: imx: Add Freescale LS1021A SMP support 2014-11-23 14:56:21 +08:00
pm-imx3.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
pm-imx5.c ARM: imx53: Set DDR pins to high impedance when in suspend to RAM. 2015-06-03 14:49:36 +08:00
pm-imx6.c ARM: imx6: initialize CCM_CLPCR_LPM into RUN mode earlier 2015-06-03 14:49:18 +08:00
pm-imx27.c ARM: imx: include hardware.h rather than mach/hardware.h 2012-10-15 10:05:43 +08:00
src.c ARM: imx: remove imx_src_prepare_restart() call 2013-11-11 22:58:43 +08:00
ssi-fiq-ksym.c ARM: imx: merge plat-mxc into mach-imx 2012-10-15 10:02:19 +08:00
ssi-fiq.S ARM: imx: merge plat-mxc into mach-imx 2012-10-15 10:02:19 +08:00
suspend-imx6.S ARM: imx: replace cpu type check with ddr type check 2014-11-23 14:56:17 +08:00
suspend-imx53.S ARM: imx53: Set DDR pins to high impedance when in suspend to RAM. 2015-06-03 14:49:36 +08:00
system.c ARM: imx: clean up machine mxc_arch_reset_init_dt reset init 2014-11-22 07:39:36 +08:00
time.c ARM: imx: Correct the comments in time.c 2015-06-03 14:49:33 +08:00
tzic.c ARM: imx: tzic: Convert to handle_domain_irq 2014-09-03 13:10:57 +00:00
ulpi.h ARM: imx: Remove mxc specific ulpi access ops 2013-06-17 15:45:16 +08:00