Shawn Guo d48866fefd ARM: imx: ensure dsm_request signal is not asserted when setting LPM ...

There is a defect in imx6 LPM design.  When SW tries to enter low power
mode with following sequence, the chip will enter low power mode before
A9 CPU execute WFI instruction:

1. Set CCM_CLPCR[1:0] to 2'b00;
2. ARM CPU enters WFI;
3. ARM CPU wakeup from an interrupt event, which is masked by GPC or not
   visible to GPC, such as interrupt from local timer;
4. Set CCM_CLPCR[1:0] to 2'b01 or 2'b10;
5. ARM CPU execute WFI.

Before the last step, the chip will enter WAIT mode if CCM_CLPCR[1:0] is
set to 2'b01, or enter STOP mode if CCM_CLPCR[1:0] is set to 2'b10.

The patch implements a recommended workaround for this issue.

1. SW triggers irq #32(IOMUX) to be always pending manually by setting
   IOMUX_GPR1_GINT bit;
2. SW should then unmask it in GPC before setting CCM LPM;
3. SW should mask it right after CCM LPM is set (bit0-1 of CCM_CLPCR).

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

2013-10-21 09:39:26 +08:00

..

devices

ARM: imx: prepare for removal of flexcan_platform_data

2013-06-27 15:15:08 +02:00

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: use imx_init_revision_from_anatop() on imx6sl

2013-10-21 09:13:13 +08:00

avic.c

ARM: arm-soc cleanup for 3.10

2013-05-02 09:03:55 -07:00

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

board-pcm038.h

ARM: imx: include board headers in the same folder

2012-10-15 09:18:14 +08:00

clk-busy.c

ARM: arm-soc non-critical fixes for 3.10

2013-05-02 08:56:55 -07:00

clk-fixup-div.c

ARM: imx: add common clock support for fixup div

2013-08-16 13:11:24 +08:00

clk-fixup-mux.c

ARM: imx: initialize clk_init_data.flags for clk-fixup-mux

2013-09-17 10:04:23 +08:00

clk-gate2.c

ARM: mach-imx: clk-gate2: Include "clk.h"

2013-04-01 16:17:50 +08:00

clk-imx1.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

clk-imx6q.c

ARM: imx6q: move low-power code out of clock driver

2013-10-21 09:39:24 +08:00

clk-imx6sl.c

ARM: imx6: change some clocks to fixup clocks

2013-08-16 13:11:25 +08:00

clk-imx21.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

clk-imx25.c

ARM: i.MX25: clk: parent per5_clk to AHB clock

2013-02-05 10:54:35 +01:00

clk-imx27.c

ARM: i.MX: change dev_id to cpu0 while registering cpu clock

2013-09-19 03:53:44 +02:00

clk-imx31.c

Linux 3.8-rc6

2013-02-04 22:56:41 -08:00

clk-imx35.c

ARM: imx35 Bugfix admux clock

2013-04-09 19:46:30 +08:00

clk-imx51-imx53.c

ARM: mach-imx: clk-imx51-imx53: Retrieve base address and irq from dt

2013-10-21 09:27:55 +08:00

clk-pfd.c

…

clk-pllv1.c

ARM: mach-imx: clk-pllv1: Staticize clk_pllv1_ops

2013-04-01 16:17:49 +08:00

clk-pllv2.c

ARM: mach-imx: clk-pllv2: Staticize clk_pllv2_ops

2013-04-01 16:17:50 +08:00

clk-pllv3.c

ARM: imx: clk-pllv3: improve the timeout waiting method

2013-08-16 13:11:25 +08:00

clk-vf610.c

ARM: imx: fix vf610 enet module clock selection

2013-07-15 08:28:09 +08:00

clk.c

ARM: imx6: change some clocks to fixup clocks

2013-08-16 13:11:25 +08:00

clk.h

The common clk framework changes for 3.12 are dominated by clock driver

2013-09-09 15:49:04 -07:00

common.h

ARM: imx: ensure dsm_request signal is not asserted when setting LPM

2013-10-21 09:39:26 +08:00

cpu-imx5.c

ARM: mach-imx: cpu-imx5: Include "common.h"

2013-04-01 16:17:49 +08:00

cpu-imx25.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +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: Include linux/err.h

2013-10-21 09:15:12 +08:00

cpuidle-imx5.c

ARM: imx: cpuidle: use init/exit common routine

2013-04-23 13:45:23 +02:00

cpuidle-imx6q.c

ARM: imx: cpuidle: use init/exit common routine

2013-04-23 13:45:23 +02:00

cpuidle.h

ARM: imx: cpuidle: use init/exit common routine

2013-04-23 13:45:23 +02:00

crm-regs-imx5.h

…

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-imx25.h

ARM: imx: prepare for removal of flexcan_platform_data

2013-06-27 15:15:08 +02:00

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

devices-imx51.h

ARM: imx: move platform device code into mach-imx

2012-10-15 09:18:15 +08:00

ehci-imx5.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

ehci-imx25.c

Merge branch 'next/cam-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

2012-11-30 09:27:57 -08:00

ehci-imx27.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

ehci-imx31.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

ehci-imx35.c

Merge branch 'next/cam-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

2012-11-30 09:27:57 -08:00

epit.c

ARM: imx: remove IRQF_DISABLED

2013-10-21 09:11:05 +08:00

eukrea_mbimx27-baseboard.c

ARM: cpuimx27 and mbimx27: prepend CONFIG_ to Kconfig macro

2013-04-03 16:50:54 +08:00

eukrea_mbimxsd25-baseboard.c

ARM: imx: prepare for removal of flexcan_platform_data

2013-06-27 15:15:08 +02:00

eukrea_mbimxsd35-baseboard.c

ARM: imx: prepare for removal of flexcan_platform_data

2013-06-27 15:15:08 +02:00

eukrea_mbimxsd51-baseboard.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

eukrea-baseboards.h

ARM: imx: include board headers in the same folder

2012-10-15 09:18:14 +08:00

gpc.c

ARM: imx: ensure dsm_request signal is not asserted when setting LPM

2013-10-21 09:39:26 +08:00

hardware.h

ARM: imx: include <asm/io.h> in hardware.h

2013-06-17 15:45:10 +08:00

headsmp.S

ARM: imx: replicate the diagnostic register of boot cpu into secondary cores

2013-05-12 21:39:18 +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

imx25-dt.c

ARM: imx: create mxc_arch_reset_init_dt() for DT boot

2013-06-17 15:45:10 +08:00

imx27-dt.c

ARM: imx: create mxc_arch_reset_init_dt() for DT boot

2013-06-17 15:45:10 +08:00

imx31-dt.c

ARM: imx: create mxc_arch_reset_init_dt() for DT boot

2013-06-17 15:45:10 +08:00

imx51-dt.c

ARM: imx: remove custom .init_time hook

2013-09-29 21:09:30 +02:00

iomux-imx31.c

ARM: mach-imx: iomux-imx31: Staticize mxc_pin_alloc_map

2013-04-01 16:17:48 +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: move iomux drivers and headers into mach-imx

2012-10-15 09:18:14 +08:00

iomux-mx21.h

ARM: imx: move iomux drivers and headers into mach-imx

2012-10-15 09:18:14 +08:00

iomux-mx25.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-mx51.h

ARM: imx: move iomux drivers and headers into mach-imx

2012-10-15 09:18:14 +08:00

iomux-v1.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +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: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

iomux-v3.h

ARM: imx: move iomux drivers and headers into mach-imx

2012-10-15 09:18:14 +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: remove header file mach/irqs.h

2012-10-15 10:05:43 +08:00

Kconfig

ARM: imx6q: clock and Kconfig update for PCIe support

2013-10-21 09:15:08 +08:00

mach-apf9328.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-armadillo5x0.c

ARM: imx: remove IRQF_DISABLED

2013-10-21 09:11:05 +08:00

mach-bug.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-cpuimx27.c

ARM: cpuimx27 and mbimx27: prepend CONFIG_ to Kconfig macro

2013-04-03 16:50:54 +08:00

mach-cpuimx35.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-cpuimx51sd.c

ARM: imx: Remove cpufreq driver

2013-04-01 16:17:34 +08:00

mach-eukrea_cpuimx25.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-imx6q.c

ARM: imx: replace imx6q_restart() with mxc_restart()

2013-10-21 09:36:53 +08:00

mach-imx6sl.c

ARM: imx6: report soc info via soc device

2013-10-21 09:14:54 +08:00

mach-imx27_visstrim_m10.c

gpio: (gpio-pca953x) move header to linux/platform_data/

2013-08-29 12:33:52 -07:00

mach-imx27ipcam.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-imx27lite.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-imx53.c

ARM: imx: remove custom .init_time hook

2013-09-29 21:09:30 +02:00

mach-kzm_arm11_01.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx1ads.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx21ads.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx25_3ds.c

ARM: imx: prepare for removal of flexcan_platform_data

2013-06-27 15:15:08 +02:00

mach-mx27_3ds.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx27ads.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx31_3ds.c

ARM: imx: remove IRQF_DISABLED

2013-10-21 09:11:05 +08:00

mach-mx31ads.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx31lilly.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx31lite.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx31moboard.c

leds: leds-mc13783: Prepare driver to support MC13892 LEDs

2013-06-20 16:21:34 -07:00

mach-mx35_3ds.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-mx51_babbage.c

ARM: imx: Remove cpufreq driver

2013-04-01 16:17:34 +08:00

mach-mxt_td60.c

gpio: (gpio-pca953x) move header to linux/platform_data/

2013-08-29 12:33:52 -07:00

mach-pca100.c

ARM: imx: Remove mxc specific ulpi access ops

2013-06-17 15:45:16 +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: imx: remove IRQF_DISABLED

2013-10-21 09:11:05 +08:00

mach-pcm038.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-pcm043.c

ARM: imx: prepare for removal of flexcan_platform_data

2013-06-27 15:15:08 +02:00

mach-qong.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-scb9328.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

mach-vf610.c

ARM: imx: remove custom .init_time hook

2013-09-29 21:09:30 +02:00

mach-vpr200.c

ARM: delete struct sys_timer

2012-12-24 09:36:38 -07:00

Makefile

ARM: imx: add common clock support for fixup mux

2013-08-16 13:11:24 +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-imx5.c

ARM: mach-imx: mm-imx5: Retrieve iomuxc base address from dt

2013-10-21 09:35:57 +08:00

mm-imx21.c

ARM: imx: move clk_prepare() out from mxc_restart()

2013-06-17 15:45:10 +08:00

mm-imx25.c

ARM: i.MX: remove sdma script address arrays from platform data

2013-08-26 20:47:16 +05:30

mm-imx27.c

ARM: imx: move clk_prepare() out from mxc_restart()

2013-06-17 15:45:10 +08:00

mmdc.c

ARM: drivers: remove __dev* attributes.

2013-01-03 15:57:04 -08:00

mx1-camera-fiq-ksym.c

ARM: imx: move platform_data definitions

2012-09-14 11:17:21 +02:00

mx1-camera-fiq.S

…

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: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx21.h

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx25.h

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx27.h

ARM: i.MX27: Typo fix

2013-07-15 08:28:07 +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: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx31moboard-marxbot.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx31moboard-smartbot.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx35.h

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx51.h

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mx53.h

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

mxc.h

ARM: imx6: report soc info via soc device

2013-10-21 09:14:54 +08:00

pcm037.h

…

pcm970-baseboard.c

ARM: imx: include hardware.h rather than mach/hardware.h

2012-10-15 10:05:43 +08:00

platsmp.c

arm: delete __cpuinit/__CPUINIT usage from all ARM users

2013-07-14 19:36:52 -04:00

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: mx53: Allow suspend/resume

2013-08-22 23:20:45 +08:00

pm-imx6q.c

ARM: imx: ensure dsm_request signal is not asserted when setting LPM

2013-10-21 09:39:26 +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: reset core along with enable/disable operation

2013-10-21 09:37:32 +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

system.c

ARM: imx: replace imx6q_restart() with mxc_restart()

2013-10-21 09:36:53 +08:00

time.c

ARM: imx: remove IRQF_DISABLED

2013-10-21 09:11:05 +08:00

tzic.c

ARM: mach-imx: tzic: Staticize *tzic_base

2013-04-01 16:17:51 +08:00

ulpi.h

ARM: imx: Remove mxc specific ulpi access ops

2013-06-17 15:45:16 +08:00