From: Evan Benn <evanbenn@chromium.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: jwerner@chromium.org, xingyu.chen@amlogic.com,
Evan Benn <evanbenn@chromium.org>,
Anson Huang <Anson.Huang@nxp.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
"David S. Miller" <davem@davemloft.net>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Guenter Roeck <linux@roeck-us.net>,
Leonard Crestez <leonard.crestez@nxp.com>,
Li Yang <leoyang.li@nxp.com>,
Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Olof Johansson <olof@lixom.net>, Rob Herring <robh+dt@kernel.org>,
Rob Herring <robh@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Valentin Schneider <valentin.schneider@arm.com>,
Will Deacon <will@kernel.org>,
Wim Van Sebroeck <wim@linux-watchdog.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
linux-watchdog@vger.kernel.org
Subject: [PATCH v5 0/2] Add a watchdog driver that uses ARM Secure Monitor Calls.
Date: Thu, 23 Apr 2020 14:40:34 +1000 [thread overview]
Message-ID: <20200423044036.234578-1-evanbenn@chromium.org> (raw)
This is currently supported in firmware deployed on oak, hana and elm mt8173
chromebook devices. The kernel driver is written to be a generic SMC
watchdog driver.
Arm Trusted Firmware upstreaming review:
https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/3405
Patch to add oak, hana, elm device tree:
https://lore.kernel.org/linux-arm-kernel/20200110073730.213789-1-hsinyi@chromium.org/
I would like to add the device tree support after the above patch is
accepted.
Changes in v5:
- Change compatible to arm,smc-wdt
- Make timeleft return 0 on error
- Use type punning on smc_func_id to save an alloc
- Change compatible to arm,smc-wdt
Changes in v4:
- Add arm,smc-id property
- Get smc-id from of property
- Return a1 instead of a0 in timeleft
Changes in v3:
- Change name back to arm
- Add optional get_timeleft op
- change name to arm_smc_wdt
Changes in v2:
- Change name arm > mt8173
- use watchdog_stop_on_reboot
- use watchdog_stop_on_unregister
- use devm_watchdog_register_device
- remove smcwd_shutdown, smcwd_remove
- change error codes
Evan Benn (1):
dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog
Julius Werner (1):
watchdog: Add new arm_smc_wdt watchdog driver
.../bindings/watchdog/arm-smc-wdt.yaml | 36 ++++
MAINTAINERS | 7 +
arch/arm64/configs/defconfig | 1 +
drivers/watchdog/Kconfig | 13 ++
drivers/watchdog/Makefile | 1 +
drivers/watchdog/arm_smc_wdt.c | 189 ++++++++++++++++++
6 files changed, 247 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml
create mode 100644 drivers/watchdog/arm_smc_wdt.c
--
2.26.2.303.gf8c07b1a785-goog
next reply other threads:[~2020-04-23 4:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-23 4:40 Evan Benn [this message]
2020-04-23 4:40 ` [PATCH v5 1/2] dt-bindings: watchdog: Add ARM smc wdt for mt8173 watchdog Evan Benn
2020-04-23 4:40 ` [PATCH v5 2/2] watchdog: Add new arm_smc_wdt watchdog driver Evan Benn
2020-04-23 5:05 ` Guenter Roeck
2020-04-23 22:17 ` Julius Werner
2020-04-28 4:42 ` Evan Benn
2020-04-28 20:06 ` Julius Werner
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