From: pankaj.dubey@samsung.com (Pankaj Dubey)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/2] Handle reboot for Exynos SoC via restart_handler
Date: Tue, 07 Oct 2014 13:23:19 +0530 [thread overview]
Message-ID: <1412668401-21837-1-git-send-email-pankaj.dubey@samsung.com> (raw)
This patch removes restart hook from machine_desc of Exynos, and moves
respective code into reboot_notifiers.
Exynos5440 handles reboot via clock register so let's register a
restart_handler in Exynos5440 clock driver.
For rest Exynos SoC, reboot is handled via PMU SWRESET register so
let's register a restart_handler in PMU driver for handling this.
This patch is inspired and dependent on following patch series[1] from
Geunter Roeck.
Also this patch is dependent on PMU platform driver patch [2] by me, and
has been prepared on top of it.
[1]: kernel: Add support for kernel restart handler call chain
https://lkml.org/lkml/2014/8/19/652
[2]: ARM: Exynos: Convert PMU implementation into a platform driver
https://lkml.org/lkml/2014/10/6/89
I have tested reboot functionality on Exynos3250 based board, on
kgene/for-next as well as linux-next's next-20140925 tag.
Patch v2 and related discussion can be found here
http://www.spinics.net/lists/linux-samsung-soc/msg37457.html
Changes since v2:
- Used register_restart_handler instead of register_reboot_notifier.
- Updated notifier names and commit message accordingly.
Changes since v1:
- Addressed review comments from Tomasz Figa. Removed usage of
local variables where ever unnecessary.
- Make reg_base as global in clk-exynos5440.c file, to avoid
iomapping it again in reboot_notifier handler.
Pankaj Dubey (2):
clk: samsung: exynos5440: move restart code into clock driver
ARM: EXYNOS: PMU: move restart code into pmu driver
arch/arm/mach-exynos/common.h | 1 -
arch/arm/mach-exynos/exynos.c | 23 -----------------------
arch/arm/mach-exynos/pmu.c | 24 ++++++++++++++++++++++++
drivers/clk/samsung/clk-exynos5440.c | 29 ++++++++++++++++++++++++++++-
4 files changed, 52 insertions(+), 25 deletions(-)
--
1.7.9.5
next reply other threads:[~2014-10-07 7:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-07 7:53 Pankaj Dubey [this message]
2014-10-07 7:53 ` [PATCH v3 1/2] clk: samsung: exynos5440: move restart code into clock driver Pankaj Dubey
2014-10-07 7:53 ` [PATCH v3 2/2] ARM: EXYNOS: PMU: move restart code into pmu driver Pankaj Dubey
2014-10-07 16:51 ` [PATCH v3 0/2] Handle reboot for Exynos SoC via restart_handler Guenter Roeck
2014-11-10 11:28 ` Pankaj Dubey
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