Prevent the Qualcomm watchdog from autostarting and ensure it's stopped when the driver probed. In some cases the watchdog is left running by a previous bootloader stage. Disable autostart so it isn't left running when we boot into the OS, this behaviour can be changed by enabling autostart in the board defconfig. Reviewed-by: Stefan Roese <stefan.roese@mailbox.org> Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com> Reviewed-by: Tom Rini <trini@konsulko.com> Link: https://patch.msgid.link/20260121003659.69305-1-casey.connolly@linaro.org Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Provide support for Tegra watchdog functionality. The WATCHDOG index 0 in conjunction with TIMER 5 is used inline with existing Linux kernel driver. Signed-off-by: Lukasz Majewski <lukma@nabladev.com> Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
The WDT_DAVINCI driver is not safe to compile on 64bit platforms such as allyesconfig on a 64bit host. Tighten the dependencies here to the platforms which could use it today. Signed-off-by: Tom Rini <trini@konsulko.com>
A few watchdog drivers cannot build without access to some platform specific header files. Express those requirements in Kconfig as well. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Stefan Roese <stefan.roese@mailbox.org>
Enable watchdog as early as possible after clock initialization which is set at 10 seconds. Signed-off-by: Alif Zakuan Yuslaimi <alif.zakuan.yuslaimi@altera.com> Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>
On STM32MP reference boards, the watchdog is started by a previous boot stage (e.g. bootrom or secure OS), so the config flag WATCHDOG_AUTOSTART is not required. It's preferable to rely on the DT properties "u-boot,autostart" or "u-boot,noautostart", if needed. For backward compatibility on defconfigs that are based on SPL, thus cannot rely on a previous boot stage for starting the watchdog, enable WATCHDOG_AUTOSTART in their respective defconfig. The change in stm32mp15_dhsom.config is propagated to: - configs/stm32mp15_dhcom_basic.config - configs/stm32mp15_dhcor_basic.config and then to: - stm32mp15_dhcom_basic_defconfig - stm32mp15_dhcom_drc02_basic_defconfig - stm32mp15_dhcom_pdk2_basic_defconfig - stm32mp15_dhcom_picoitx_basic_defconfig - stm32mp15_dhcor_avenger96_basic_defconfig - stm32mp15_dhcor_basic_defconfig - stm32mp15_dhcor_drc_compact_basic_defconfig - stm32mp15_dhcor_testbench_basic_defconfig Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
With the removal of the last i.MX31 platform we can remove the rest of
the underlying architecture code as well.
Fixes: f247354708ec ("arm: Remove mx31pdk board")
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
This patch enhances the Qualcomm watchdog driver by introducing support for dynamic timeout configuration. Specifically: - Calculates and sets the bark and bite timeout values based on the clock rate and the requested timeout in milliseconds. - Adds retrieval of the watchdog clock rate during probe using the common clock framework. - Adds a default timeout value for ARCH_SNAPDRAGON in WATCHDOG_TIMEOUT_MSECS. These changes improve the configurability and accuracy of the watchdog timer on Qualcomm platforms. This work builds upon the previous submission: https://lore.kernel.org/all/20250422-b4-qcom-wdt-v3-1-730d4d5a858d@paulsajna.com/ Signed-off-by: Balaji Selvanathan <balaji.selvanathan@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250527124926.128413-1-balaji.selvanathan@oss.qualcomm.com Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Some Qualcomm device vendors decide to turn the watchdog on in the bootloader, resulting in the device being reset if it isn't petted every ~30 seconds. Introduce a driver to keep the watchdog happy and prevent this annoying behaviour. Signed-off-by: Paul Sajna <hello@paulsajna.com> Co-authored-by: Paul Sajna <hello@paulsajna.com> Tested-by: Paul Sajna <hello@paulsajna.com> Reviewed-by: Stefan Roese <sr@denx.de> Acked-by: Sumit Garg <sumit.garg@oss.qualcomm.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20250422-b4-qcom-wdt-v3-1-730d4d5a858d@paulsajna.com Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
Add support of Renesas R-Car Gen4 watchdog timer. Timeouts up to
8184.0s are supported (CKS1 register is not involved). The watchdog
uses the clock of type CLK_TYPE_GEN4_MDSEL.
The timeout is set in
dts/upstream/src/arm64/renesas/r8a779f0-spider-cpu.dtsi section &rwdt.
This driver is based on upstream linux commit:
e70140ba0d2b("Get rid of 'remove_new' relic from platform driver struct")
Signed-off-by: Shmuel Leib Melamud <smelamud@redhat.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>