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-email-narmstrong@xxxxxxxxxxxx : - Fix set_timeout behaviour Changes since v1 at http://lkml.kernel.org/r/1464614948-28247-1-git-send-email-narmstrong@xxxxxxxxxxxx : - 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-email-narmstrong@xxxxxxxxxxxx : - 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 -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
