Hi, This is the second version of the patch series for adding suspend-resume support for AM33XX. Based on the feedback received on the previous patch series [1] almost all the patches have undergone a bit a rework.
The 1st two patches depend on the changes for mailbox code migration from arch/arm/*-omap*/ to drivers/mailbox/ [2]. The patch series also depends on recent changes to the OMAP PM framework by Paul Walmsley. I found it easiest to apply the AM33XX suspend-resume patches on top of Paul's TEST_pwrdm_post_fpwrst_devel_a_3.9 branch + the patches @ [2]. With these dependencies met, the PM code uses the firmware interface and expects the userspace to load the WKUP_M3 binary before the suspend-resume functionality is made available. The binary file (and the source-code for WKUP_M3) can be obtained from the 'next' branch at [3]. The WKUP_M3 binary can either be loaded post bootup via the sysfs entry './sys/devices/ocp.2/wkup_m3.4/firmware' or it can be included in the kernel image as part of the build process. DDR3 specific changes have been skipped for now since mainline U-Boot exhibited stability issues on all the DDR3 based AM335x boards that i could lay my hands on. I have done basic testing along with power measurments on the different power rails on the AM335x EVM. PER domain transition on the BeagleBone fails if the CPSW driver is included in the kernel and is yet to be root caused. Along with this issue more extensive testing on other OMAP platforms is also pending right now. For more details on the AM335x suspend-resume support please refer to the changelog in the different patches. Regards, Vaibhav [1] http://marc.info/?l=linux-arm-kernel&m=135185970731607&w=4 [2] http://marc.info/?l=linux-omap&m=135583648827089&w=4 [3] http://arago-project.org/git/projects/?p=am33x-cm3.git;a=shortlog;h=refs/heads/next Vaibhav Bedia (18): mailbox: OMAP2+: Add support for AM33XX mailbox: Add an API for flushing the FIFO memory: emif: Move EMIF related header file to include/linux/ ARM: OMAP2+: AM33XX: CM: Get rid of unncessary header inclusions ARM: OMAP2+: AM33XX: CM/PRM: Use __ASSEMBLER__ macros in header files ARM: OMAP2+: AM33XX: hwmod: Register OCMC RAM hwmod ARM: OMAP2+: AM33XX: hwmod: Update TPTC0 hwmod with the right flags ARM: OMAP2+: AM33XX: hwmod: Fixup cpgmac0 hwmod entry ARM: OMAP2+: AM33XX: Update the hardreset API ARM: OMAP2+: AM33XX: hwmod: Update the WKUP-M3 hwmod with reset status bit ARM: DTS: AM33XX: Add nodes for OCMC RAM and WKUP-M3 ARM: OMAP2+: timer: Add suspend-resume callbacks for clockevent device ARM: OMAP2+: AM33XX: timer: Interchance clkevt and clksrc timers ARM: OMAP2+: AM33XX: control: Add some control module registers and APIs ARM: OMAP2+: AM33XX: Add assembly code for PM operations ARM: OMAP2+: AM33XX: Basic suspend resume support ARM: OMAP2+: AM33XX: Select Mailbox when PM is enabled ARM: OMAP2+: AM33XX: Hookup AM33XX PM code into OMAP builds .../devicetree/bindings/arm/omap/timer.txt | 2 + arch/arm/boot/dts/am33xx.dtsi | 12 + arch/arm/mach-omap2/Kconfig | 4 +- arch/arm/mach-omap2/Makefile | 2 + arch/arm/mach-omap2/board-generic.c | 1 + arch/arm/mach-omap2/cm33xx.h | 10 +- arch/arm/mach-omap2/common.h | 10 + arch/arm/mach-omap2/control.c | 20 + arch/arm/mach-omap2/control.h | 41 ++ arch/arm/mach-omap2/io.c | 7 + arch/arm/mach-omap2/omap_hwmod.c | 5 +- arch/arm/mach-omap2/omap_hwmod_33xx_data.c | 50 +- arch/arm/mach-omap2/pm.h | 7 + arch/arm/mach-omap2/pm33xx.c | 469 ++++++++++++++++ arch/arm/mach-omap2/pm33xx.h | 56 ++ arch/arm/mach-omap2/prm33xx.c | 11 +- arch/arm/mach-omap2/prm33xx.h | 5 +- arch/arm/mach-omap2/sleep33xx.S | 584 +++++++++++++++++++ arch/arm/mach-omap2/sram.c | 10 +- arch/arm/mach-omap2/sram.h | 2 + arch/arm/mach-omap2/timer.c | 39 ++- drivers/mailbox/mailbox-omap2.c | 54 ++- drivers/mailbox/mailbox.c | 36 ++ drivers/mailbox/mailbox.h | 3 + drivers/memory/emif.c | 2 +- drivers/memory/emif.h | 589 -------------------- include/linux/mailbox.h | 1 + include/linux/ti_emif.h | 589 ++++++++++++++++++++ 28 files changed, 1989 insertions(+), 632 deletions(-) create mode 100644 arch/arm/mach-omap2/pm33xx.c create mode 100644 arch/arm/mach-omap2/pm33xx.h create mode 100644 arch/arm/mach-omap2/sleep33xx.S delete mode 100644 drivers/memory/emif.h create mode 100644 include/linux/ti_emif.h -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
