From: Xingyu Chen <xingyu.chen@amlogic.com>
To: Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>,
Kevin Hilman <khilman@baylibre.com>,
Neil Armstrong <narmstrong@baylibre.com>
Cc: Xingyu Chen <xingyu.chen@amlogic.com>,
Rob Herring <robh+dt@kernel.org>,
Jerome Brunet <jbrunet@baylibre.com>,
Qianggui Song <qianggui.song@amlogic.com>,
Jianxin Pan <jianxin.pan@amlogic.com>,
Jian Hu <jian.hu@amlogic.com>, <linux-watchdog@vger.kernel.org>,
<linux-amlogic@lists.infradead.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>
Subject: [PATCH v3 0/4] add meson secure watchdog driver
Date: Fri, 25 Oct 2019 14:13:00 +0800 [thread overview]
Message-ID: <1571983984-11771-1-git-send-email-xingyu.chen@amlogic.com> (raw)
The watchdog controller on the Meson-A/C series SoCs is moved to secure world,
We have to call SMC instruction to trap the ATF for watchdog operation. These
operations are different from previous SoCs, so we introduce a new watchdog
driver to support this kind of SoCs.
Changes since v2 at [1]:
- remove useless dependency in Kconfig
- return zero when getting left time value fails
Changes since v1 at [0]:
- add a new dependency in Kconfig
- simplify/add the return operation
- remove useless ping operation when setting the timeout
- fix some return values
- fix the license statement
[0]:https://lore.kernel.org/linux-amlogic/1570874721-36077-1-git-send-email-xingyu.chen@amlogic.com
[1]:https://lore.kernel.org/linux-amlogic/1571387622-35132-1-git-send-email-xingyu.chen@amlogic.com
Xingyu Chen (4):
firmware: meson_sm: add new SMC ID support for accessing secure
watchdog
dt-bindings: watchdog: add new binding for meson secure watchdog
watchdog: add meson secure watchdog driver
arm64: dts: a1: add secure watchdog controller
.../bindings/watchdog/amlogic,meson-sec-wdt.yaml | 34 ++++
arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 6 +
drivers/firmware/meson/meson_sm.c | 1 +
drivers/watchdog/Kconfig | 16 ++
drivers/watchdog/Makefile | 1 +
drivers/watchdog/meson_sec_wdt.c | 187 +++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 1 +
7 files changed, 246 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml
create mode 100644 drivers/watchdog/meson_sec_wdt.c
--
2.7.4
next reply other threads:[~2019-10-25 6:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-25 6:13 Xingyu Chen [this message]
2019-10-25 6:13 ` [PATCH v3 1/4] firmware: meson_sm: add new SMC ID support for accessing secure watchdog Xingyu Chen
2019-10-25 6:13 ` [PATCH v3 2/4] dt-bindings: watchdog: add new binding for meson " Xingyu Chen
2019-10-25 20:30 ` Rob Herring
2019-10-28 8:35 ` Xingyu Chen
2019-10-29 20:51 ` Rob Herring
2019-10-30 12:59 ` Xingyu Chen
2019-10-30 13:41 ` Rob Herring
2019-10-31 12:40 ` Xingyu Chen
2019-10-25 6:13 ` [PATCH v3 3/4] watchdog: add meson secure watchdog driver Xingyu Chen
2019-11-02 15:44 ` Guenter Roeck
2019-10-25 6:13 ` [PATCH v3 4/4] arm64: dts: a1: add secure watchdog controller Xingyu Chen
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