linux-kernel - Re: [PATCH v2 0/7] Watchdog: introduce ARM SBSA watchdog driver

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Date:	Thu, 21 May 2015 15:36:40 -0500
From:	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>
To:	<fu.wei@...aro.org>, <linaro-acpi@...ts.linaro.org>,
	<linux-watchdog@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>
CC:	<tekkamanninja@...il.com>, <graeme.gregory@...aro.org>,
	<al.stone@...aro.org>, <hanjun.guo@...aro.org>,
	<timur@...eaurora.org>, <ashwin.chaugule@...aro.org>,
	<arnd@...db.de>, <linux@...ck-us.net>, <vgandhi@...eaurora.org>,
	<wim@...ana.be>, <jcm@...hat.com>, <leo.duran@....com>,
	<corbet@....net>, <mark.rutland@....com>
Subject: Re: [PATCH v2 0/7] Watchdog: introduce ARM SBSA watchdog driver

For patch 1,4,5,6,and 7, I have tested this on AMD Seattle platform.

Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>

Thanks,

Suravee

On 5/21/15 03:32, fu.wei@...aro.org wrote:
> From: Fu Wei <fu.wei@...aro.org>
>
> This patchset:
>
>      (1)Export "arch_timer_get_rate" in arm_arch_timer.c for the
>      other drivers, like SBSA watchdog driver
>
>      (2)Introduce Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
>      for FDT info of SBSA Generic Watchdog, and give two examples of
>      adding SBSA Generic Watchdog device node into the dts files:
>      foundation-v8.dts and amd-seattle-soc.dtsi.
>
>      (3)Introduce "pretimeout" into the watchdog framework, and update
>      Documentation/watchdog/watchdog-kernel-api.txt to introduce:
>          (1)the new elements in the watchdog_device and watchdog_ops struct;
>          (2)the new API "watchdog_init_timeouts".
>
>      (4)Introduce ARM SBSA watchdog driver:
>          a.Use linux kernel watchdog framework;
>          b.Work with FDT on ARM64;
>          c.Use "pretimeout" in watchdog framework;
>          d.In first timeout(WS0), do panic to save system context;
>          e.Support geting timeout and pretimeout from parameter and FDT
>            at the driver init stage.
>
>      (5)Parse SBSA Generic Watchdog Structure in GTDT table of ACPI,
>      and create a platform device with that information.
>      This platform device can be used by This Watchdog driver.
>
> This patchset has been tested with watchdog daemon
> (ACPI/FDT, module/build-in) on the following platforms:
>      (1)ARM Foundation v8 model
>      (2)AMD Seattle B0
>
> Changelog:
> v2: Improve watchdog-kernel-api.txt documentation for pretimeout support.
>      Export "arch_timer_get_rate" in arm_arch_timer.c.
>      Add watchdog_init_timeouts API for pretimeout support in framework.
>      Improve suspend and resume foundation in driver
>      Improve timeout/pretimeout values init code in driver.
>      Delete unnecessary items of the sbsa_gwdt struct and #define.
>      Delete all unnecessary debug info in driver.
>      Fix 64bit division bug.
>      Use the arch_timer interface to get watchdog clock rate.
>      Add MODULE_DEVICE_TABLE for platform device id.
>      Fix typoes.
>
> v1: The first version upstream patchset to linux mailing list
>
> Fu Wei (7):
>    clocksource: export "arch_timer_get_rate" for the other drivers
>    Documentation: add sbsa-gwdt.txt documentation
>    ARM64: add SBSA Generic Watchdog device node in foundation-v8.dts
>    ARM64: add SBSA Generic Watchdog device node in amd-seattle-soc.dtsi
>    Watchdog: introduce "pretimeout" into framework
>    Watchdog: introduce ARM SBSA watchdog driver
>    ACPI: import watchdog info of GTDT into platform device
>
>   .../devicetree/bindings/watchdog/sbsa-gwdt.txt     |  36 ++
>   Documentation/watchdog/watchdog-kernel-api.txt     |  62 ++-
>   arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi       |  11 +
>   arch/arm64/boot/dts/arm/foundation-v8.dts          |  10 +
>   arch/arm64/kernel/acpi.c                           | 136 ++++++
>   drivers/clocksource/arm_arch_timer.c               |   1 +
>   drivers/watchdog/Kconfig                           |  12 +
>   drivers/watchdog/Makefile                          |   1 +
>   drivers/watchdog/sbsa_gwdt.c                       | 476 +++++++++++++++++++++
>   drivers/watchdog/watchdog_core.c                   | 103 +++--
>   drivers/watchdog/watchdog_dev.c                    |  48 +++
>   include/linux/watchdog.h                           |  30 +-
>   12 files changed, 891 insertions(+), 35 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
>   create mode 100644 drivers/watchdog/sbsa_gwdt.c
>
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