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).
Currently Exynos4412 SoC support is limited to Trats2 board.
Depends on: - next-20140904 branch of linux-next kernel tree - "irqchip: Properly fetch the per cpu offset" patch (https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg716674.html) - [PATCH v3 0/5] Firmware-assisted suspend/resume of Exynos SoCs (https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35921.html)
Changes since v5: - rebased on top of next-20140904 + "irqchip: Properly fetch the per cpu offset" patch (https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg716674.html) [PATCH v3 0/5] Firmware-assisted suspend/resume of Exynos SoCs (https://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg35921.html) - limit Exynos4412 SoC support to Trats2 board for now
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@vger.kernel.org/msg35262.html) [PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/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@vger.kernel.org/msg35192.html) [PATCH v2 0/2] Firmware-assisted suspend/resume of Exynos SoCs (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/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@vger.kernel.org/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@vger.kernel.org/msg32808.html) [PATCH 0/2] Firmware-assisted suspend/resume of Exynos SoCs (http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/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 | 5 +++- arch/arm/mach-exynos/firmware.c | 34 ++++++++++++++++------- arch/arm/mach-exynos/pm.c | 60 ++++++++++++++++++++++++----------------- 5 files changed, 71 insertions(+), 35 deletions(-)