| Message ID | 1571983984-11771-1-git-send-email-xingyu.chen@amlogic.com (mailing list archive) |
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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>,
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Qianggui Song <qianggui.song@amlogic.com>,
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<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
Message-ID: <1571983984-11771-1-git-send-email-xingyu.chen@amlogic.com>
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| Series |
add meson secure watchdog driver
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expand
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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