From mboxrd@z Thu Jan 1 00:00:00 1970 From: lokeshvutla@ti.com (Lokesh Vutla) Date: Mon, 25 Mar 2013 17:16:59 +0530 Subject: [PATCH v2 00/18] ARM: OMAP5: PM: Add MPUSS suspend and CPUidle support In-Reply-To: <1364205910-32392-1-git-send-email-santosh.shilimkar@ti.com> References: <1364205910-32392-1-git-send-email-santosh.shilimkar@ti.com> Message-ID: <51503933.9060106@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Santosh, On Monday 25 March 2013 03:34 PM, Santosh Shilimkar wrote: > Kevin, > > Here is the refreshed version(v2) of the OMAP5 PM suspport which was posted > earlier (March 1st 2013). Patch-set incorporates comments from Nishant > Menon (Thanks for review NM) and his acked-by tags. I would like to get this > queued for 3.10 merge window if you are ok with the series. > > Series is built on top of my pull requests [1] [2] [3] sent to Tony and your > 'for_3.10/pm/cleanup' branch. For testing, I have created a branch [4] > which put together all the needed dependencies, fixes which should make it > to 3.10 merge window. > > Series adds OMAP5 MPUSS power management support for system wide suspend > and CPUidle. Its heavy re-use from OMAP4 and hence only ~400 odd lines are > needed to add OMAP5 PM support on top of existing OMAP4 PM support. > > OMAP5 adds a mercury retention feature which is an enhancement of > existing retention feature to reduce the leakage. No change in > programming model except one time enabling of mercury retention > during init. > > One more notable change in OMAP5 vs OMAP4 devices, CPUx power domains > support retention state which lets you hit MPUSS and Core retention with > very low latency C-states. > > Tested on OMAP4430 SDP, OMAP4460 Panda, OMAP5430 SDP and OMAP5432 Panda > devices with suspend and CPUIdle. Rootfs is mounted over ramdisk since > the mmc and nfs based fs needs DMA engine patches. For suspend wakeup, > I used Sourav's couple of serial wakeup wip patches from the lists. I did the following build tests on [1]: -> Native omap2plus build -> Omap2 only build -> Omap3 only build -> Omap4 only build -> Omap5 only build -> AM33XX only build. -> omap1_defconfig And also did functional testing on [2] where omap5_pm branch[1] is merged. On OMAP5430 EVM: Suspend to RAM (UART wakeup) CPU_IDLE On OMAP4430 SDP: Suspend to RAM (UART wakeup) CPU_IDLE Note: 1) Disabled SMP for doing build test on Omap2/3 only builds. 2) If we enable CPU_IDLE on OMAP4430, debug message flood from reset_ctrl_regs() will appear. As this is already disussed and a patch is already sent on Mainline Will get more info on this here[3] Tested-by: Lokesh Vutla Thanks and Regards, Lokesh [1] git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux for_3.10/omap5_pm [2] git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux.git testing/3.10/omap5_int [3] https://lkml.org/lkml/2013/3/13/50 > > The following changes since commit 9981cde24de52e5bb9a7cd918d1e54de241f85c9: > > Merge branch 'for_3.10/omap5_data_files' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux into for_3.10/omap5_pm (2013-03-25 12:29:34 +0530) > > are available in the git repository at: > > > git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux.git for_3.10/omap5_pm > > for you to fetch changes up to 75bd846d3103da858a208fe07127151903d1f608: > > ARM: OMAP5: PM: handle device instance for warm reset (2013-03-25 12:37:44 +0530) > > ---------------------------------------------------------------- > Nishanth Menon (1): > ARM: OMAP5: PM: handle device instance for warm reset > > Santosh Shilimkar (17): > ARM: OMAP4+: PM: Consolidate MPU subsystem PM code for re-use > ARM: OMAP5: PM: Update CPU context register offset > ARM: OMAP4+: PM: Consolidate and use OMAP4 PM code for OMAP5 > ARM: OMAP5: PM: Set MPUSS-EMIF clock-domain static dependency > ARM: OMAP5: PM: Enables ES2 PM mode by default > ARM: OMAP5: PM: Enable Mercury retention mode on CPUx powerdomains > ARM: OMAP5: Add init_late() hook to enable pm initialization > ARM: OMAP5: PM: Add CPU power off in hotplug path > ARM: OMAP4+: PM: Restore CPU power state to ON with clockdomain force > wakeup method > ARM: OMAP5: PM: Add MPU Open Switch Retention support > ARM: OMAP5: PM: Add L2 memory power down support > ARM: OMAP4: CPUidle: Avoid double idle driver registration > ARM: OMAP: CPUidle: Unregister drivere on device registration failure > ARM: OMAP4: CPUidle: Make C-state description field more precise > ARM: OMAP4+: CPUidle: Consolidate idle driver for OMAP5 support > ARM: OMAP4+: CPUidle: Deprecate use of > omap4_mpuss_read_prev_context_state() > ARM: OMAP4+: CPUidle: Add OMAP5 idle driver support > > arch/arm/mach-omap2/Kconfig | 1 + > arch/arm/mach-omap2/Makefile | 12 +- > arch/arm/mach-omap2/board-generic.c | 1 + > arch/arm/mach-omap2/common.h | 8 +- > arch/arm/mach-omap2/cpuidle34xx.c | 6 +- > .../{cpuidle44xx.c => cpuidle_omap4plus.c} | 151 ++++++++++++++++--- > arch/arm/mach-omap2/io.c | 8 + > arch/arm/mach-omap2/omap-mpuss-lowpower.c | 155 +++++++++++++++----- > arch/arm/mach-omap2/omap-secure.h | 9 ++ > arch/arm/mach-omap2/omap-smp.c | 12 +- > arch/arm/mach-omap2/omap-wakeupgen.c | 30 +++- > arch/arm/mach-omap2/omap-wakeupgen.h | 1 + > arch/arm/mach-omap2/omap4-sar-layout.h | 2 + > arch/arm/mach-omap2/{pm44xx.c => pm_omap4plus.c} | 90 ++++++++++-- > arch/arm/mach-omap2/prminst44xx.c | 10 +- > .../mach-omap2/{sleep44xx.S => sleep_omap4plus.S} | 106 +++++++++++++ > 16 files changed, 512 insertions(+), 90 deletions(-) > rename arch/arm/mach-omap2/{cpuidle44xx.c => cpuidle_omap4plus.c} (58%) > rename arch/arm/mach-omap2/{pm44xx.c => pm_omap4plus.c} (74%) > rename arch/arm/mach-omap2/{sleep44xx.S => sleep_omap4plus.S} (77%) >