[PATCH v6 0/4] Adds PMU and S2R support for exynos5420

On Fri, Jul 11, 2014 at 11:45 AM, Naveen Krishna Ch
[off-list ref] wrote:

Hello Vikas,

On 7 July 2014 18:25, Vikas Sajjan [off-list ref] wrote:

quoted

Rebased on
1] Kukjin Kim's tree, for-next branch
https://git.kernel.org/cgit/linux/kernel/git/kgene/linux-samsung.git/log/?h=for-next
2] Pankaj Dubey's v6 PMU patchset
http://www.mail-archive.com/linux-samsung-soc at vger.kernel.org/msg33660.html

changes since v5:
        - Refactored pm.c to use DT based lookup as suggested by Tomasz Figa.

changes since v4:
        - Adressed comments from Tomasz figa and rebased on Pankaj Dubey's v5 PMU patchset

changes since v3:
Addressed the following comments from Pankaj Dubey, Bartlomiej Zolnierkiewicz,
Tomasz Figa and Alim Akhtar:
        - Moved EXYNOS5420_USE_STANDBY_WFI_ALL define to regs-pmu.h.
        - Merged exynos5420_set_core_flag function into powerdown_conf.
        - Removed XXTI_DURATION3 register setting.
        - Updated the commit message and ordered the clock registers in clock
          patch.
        - Removed the code for SYS_DISP1_BLK_CFG handling.
        - Modified SoC checks to A9 specific checks in PM code.
        - Updated some comments in the code and added macros for register offsets.
        - Fixed code which was changing pad retention code for older SoCs.

changes since v2:
        - Addressed comments from Tomasz figa
        - rebased on Pankaj's V3 patchset https://lkml.org/lkml/2014/5/2/612
        - dropped patch "ARM: dts: Add node for GPIO keys on SMDK5420",
          will be sent separately.

changes since v1:
        - Addressed comments from Tomasz figa.
        - restructured/consolidated as per Tomasz figa's PM consolidations for exynos

Tested on Kukjin Kim's tree, for-next branch +
        1] http://www.spinics.net/lists/linux-samsung-soc/msg33750.html
        2] http://www.spinics.net/lists/linux-samsung-soc/msg32923.html
        3] https://www.mail-archive.com/linux-mmc at vger.kernel.org/msg26210.html (for eMMC S2R fail issue)

on Exynos5420 based chromebook (peach-pit board) and Exynos5250 based chromebook (snow board).

PS : Not tested on exynos4 based boards.

Tested-by for exynos4 would be appreciated.

Below procedures were followed to test S2R:
Procedure A:
        1. make multi_v7_defconfig
        2  enable MCPM for 5420
        3. enable S3C RTC
        4. pass "no_console_suspend" in bootargs
        5. echo +20 > /sys/class/rtc/rtc0/wakealarm && echo mem > /sys/power/state
Procedure B:
        1. make exynos_defconfig
        2  enable MCPM for 5420
        3  enable CONFIG_PL330_DMA
        4. enable CONFIG_PM_RUNTIME
        5. pass "no_console_suspend" in bootargs
        6. echo +20 > /sys/class/rtc/rtc0/wakealarm && echo mem > /sys/power/state

Could test with the given description on Exynos5420 based Peach PIT.
S2R on Exynos5250 based Snow works fine too.

With http://www.spinics.net/lists/linux-samsung-soc/msg33999.html
S2R on Exynos5800 based Peach PI works fine.

Tested-by: Naveen Krishna Chatradhi <redacted>

Thank you Naveen for testing.

Anybody has comments for this series?

quoted

Abhilash Kesavan (2):
  arm: exynos5: Add PMU support for 5420
  arm: exynos5: Add Suspend-to-RAM support for 5420

Vikas Sajjan (2):
  ARM: EXYNOS: Refactor the code to use DT based lookup
  clk: samsung: exynos5420: Setup clocks before system suspend

 arch/arm/mach-exynos/pm.c            |  376 ++++++++++++++++++++++++++++++----
 arch/arm/mach-exynos/pmu.c           |  288 ++++++++++++++++++++++++++
 arch/arm/mach-exynos/regs-pmu.h      |  230 +++++++++++++++++++++
 drivers/clk/samsung/clk-exynos5420.c |   29 +++
 4 files changed, 880 insertions(+), 43 deletions(-)

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