| From: |
| Neil Armstrong <narmstrong@baylibre.com> |
| To: |
| Wim Van Sebroeck <wim@iguana.be>, Guenter Roeck <linux@roeck-us.net> |
| Subject: |
| [PATCH v3 0/3] watchdog: Add Amlogic Meson GXBB Watchdog Timer driver |
| Date: |
| Sun, 10 Jul 2016 11:11:03 +0200 |
| Message-ID: |
| <1468141867-4172-1-git-send-email-narmstrong@baylibre.com> |
| Cc: |
| Neil Armstrong <narmstrong@baylibre.com>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-watchdog@vger.kernel.org |
| Archive‑link: | |
Article |
Adds support for the Amlogic Meson GXBB SoC Watchdog Timer.
It differs from the meson6/meson8b HW, so need for a separate driver.
The HW provides a divider capable of having a 1ms timebase thus simplifying
the counter update.
The restart call is not provided even if the HW is capable of triggering a
system reset immediately because of the PSCI firmare having such functionnality.
The watchdog is not expected to be running at boot time since there is a separate
system-level watchdog running from the SCPI co-processor, but this case would be
handle in a next driver update.
Changes since v2 at http://lkml.kernel.org/r/1464943007-18000-1-git-send-emai... :
- Fix set_timeout behaviour
Changes since v1 at http://lkml.kernel.org/r/1464614948-28247-1-git-send-emai... :
- Update default timeout to 30sec
- Add separate CONFIG_
- Remove unused defines & functions
- Fix indentation
- Check set_timeout max value
- Reorder includes alphabetically
- Switch to human identify string
- clk_disable_unprepare on probe failure or removal
Changes since RFC version at http://lkml.kernel.org/r/1464249112-13658-1-git-send-emai... :
- Remove status callback, will re-introduce it later to managed the already-running use case
- Fix registers defines indentation
- Fix space between operators
- Make all callbacks static functions
- Fix bindings with missing clocks attribute
- Do not stop/start watchdog on a timeout setup
- Fix probe device configuration
Neil Armstrong (3):
watchdog: Add Meson GXBB Watchdog Driver
dt-bindings: watchdog: Add Meson GXBB Watchdog bindings
ARM64: dts: amlogic: meson-gxbb: Add watchdog node
.../bindings/watchdog/meson-gxbb-wdt.txt | 16 ++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 +
drivers/watchdog/Kconfig | 10 +
drivers/watchdog/Makefile | 1 +
drivers/watchdog/meson_gxbb_wdt.c | 270 +++++++++++++++++++++
5 files changed, 303 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/meson-gxbb-wdt.txt
create mode 100644 drivers/watchdog/meson_gxbb_wdt.c
--
2.7.0
