On 08/05/2014 03:34 PM, Bartlomiej Zolnierkiewicz wrote:
Hi,
This patch series adds support for AFTR idle mode on boards with
secure firmware enabled and allows EXYNOS cpuidle driver usage on
Exynos4x12 SoCs.
It has been tested on Trats2 board (using Exynos4412 SoC with secure
firmware enabled) on which AFTR mode reduces power consumption by ~12%
when EXYNOS cpuidle driver is enabled (in both cases the default
exynos_defconfig config is used and CPU1-3 are offlined).
Hi Bartlomiej,
I tested your patchset on an odroid-u2. When the cpuidle driver is
enabled and the cpu1-3 are offlined, the kernel hangs.
If I disable the AFTR state on cpuidle, and offline the 1-3, it works as
expected. So there is something wrong with the AFTR on the odroid board.
Depends on:
- next-20140804 branch of linux-next kernel tree
- [PATCH v5][next-20140804] ARM: EXYNOS: Fix suspend/resume sequences
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg35262.html)
- [PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg34282.html)
Changes since v4:
- rebased on top of next-20140804 +
[PATCH v5][next-20140804] ARM: EXYNOS: Fix suspend/resume sequences
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg35262.html)
[PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg34282.html)
- call exynos_save_cp15() only on A9 type core (this is needed for the future
Exynos3250 SoC support)
Changes since v3:
- rebased on top of next-20140804 +
[PATCH v4][next-20140804] ARM: EXYNOS: Fix suspend/resume sequences
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg35192.html)
[PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg34282.html)
- (re-)added patch fixing S5P_CENTRAL_SEQ_OPTION register setup
Changes since v2:
- rebased on top of next-20140708 +
[PATCH 5/6] ARM: EXYNOS: Fix suspend/resume sequencies
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg32809.html)
[with rejects fixed]
[PATCH 6/6] ARM: EXYNOS: Register cpuidle device only on Exynos4210 and 5250
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg32808.html)
[PATCH 0/2] Firmware-assisted suspend/resume of Exynos SoCs
(http://www.mail-archive.com/linux-samsung-soc@xxxxxxxxxxxxxxx/msg32991.html)
[with rejects fixed in patch #2]
- addressed review comments from Tomasz Figa and Daniel Lezcano
Changes since v1:
- synced against next-20140602
- added missing Acked-by-s
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
Bartlomiej Zolnierkiewicz (5):
ARM: EXYNOS: PM: replace EXYNOS_BOOT_VECTOR_* macros by static inlines
ARM: EXYNOS: add AFTR mode support to firmware do_idle method
ARM: EXYNOS: cpuidle: add secure firmware support to AFTR mode code
ARM: EXYNOS: PM: fix register setup for AFTR mode code
ARM: EXYNOS: cpuidle: allow driver usage on Exynos4x12 SoCs
arch/arm/include/asm/firmware.h | 2 +-
arch/arm/mach-exynos/common.h | 5 ++++
arch/arm/mach-exynos/exynos.c | 4 ++-
arch/arm/mach-exynos/firmware.c | 34 ++++++++++++++++-------
arch/arm/mach-exynos/pm.c | 60 ++++++++++++++++++++++++-----------------
5 files changed, 70 insertions(+), 35 deletions(-)
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