u-boot.git/drivers/watchdog, branch v2022.04

watchdog: rti_wdt: Add 10% safety margin to clock frequency

2022-03-08T08:08:09Z

When running against RC_OSC_32k, the watchdog may suffer from running faster than expected, expiring earlier. The Linux kernel adds a 10% margin to the timeout calculation by slowing down the read clock rate accordingly. Do the same here, also to have comparable preset values for both drivers. Along this, fix the name of the local var holding to frequency - in Hz, not kHz. Signed-off-by: Jan Kiszka Signed-off-by: Stefan Roese

watchdog: armada_37xx: Probe driver also when watchdog is already running

2022-03-08T08:08:09Z

If Armada 37xx watchdog is started before U-Boot then CNTR_CTRL_ACTIVE bit is set, U-Boot armada-37xx-wdt.c driver fails to initialize and so U-Boot is unable to use or kick this watchdog. Do not check for CNTR_CTRL_ACTIVE bit and always initialize watchdog. Same behavior is implemented in Linux kernel driver. This change allows to activate watchdog in firmware which loads U-Boot. Signed-off-by: Pali Rohár Reviewed-by: Marek Behún Reviewed-by: Stefan Roese

drivers: watchdog: wdt-uclass.c: add a property u-boot, noautostart

2022-03-08T08:08:00Z

Since commit 492ee6b8d0e7 ("watchdog: wdt-uclass.c: handle all DM watchdogs in watchdog_reset()"), all the watchdog are started when the config WATCHDOG_AUTOSTART. To avoid a binary choice none/all, a property u-boot,noautostart may be added in the watchdog node of the u-boot device tree to not autostart this watchdog. Signed-off-by: Philippe Reynes Reviewed-by: Simon Glass Reviewed-by: Stefan Roese

watchdog: add sl28cpld watchdog driver

2022-02-28T06:29:35Z

The watchdog timer is part of the sl28cpld management controller. The watchdog timer usually supervises the bootloader boot-up and if it bites the failsafe bootloader will be activated. Apart from that it supports the usual board level reset and one SMARC speciality: driving the WDT_TIMEOUT# signal. Signed-off-by: Michael Walle Reviewed-by: Priyanka Jain

watchdog: armada_37xx: Convert to official DT bindings

2022-02-17T13:17:07Z

Official DT bindings have only one reg property: watchdog address space. Convert armada-37xx-wdt.c driver to offical DT bindings and access sel_reg register via MVEBU_REGISTER() macro, as its value (required by U-Boot driver) is not in DT yet. In later stage can be driver cleaned to not use it. This change would allow U-Boot to use A3720 watchdog DTS structure from Linux kernel. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese

watchdog: Add a driver for the Apple watchdog

2022-01-13T05:55:46Z

This driver supports the watchdog timer found on Apple's M1 SoC. On systems that use these SoC, the watchdog timer is the primary way to reboot the system. Signed-off-by: Mark Kettenis Reviewed-by: Sven Peter Reviewed-by: Simon Glass Reviewed-by: Stefan Roese Tested-on: Apple M1 Macbook Tested-by: Simon Glass

sandbox: fix sandbox_wdt_expire_now()

2021-11-13T15:16:52Z

With CONFIG_SYSRESET_WATCHDOG=y the sandbox can use a watchdog based system reset. To make this work calling sandbox_wdt_expire_now() must lead to a reset. With this change we can test the development suggested in [PATCH 0/4] Improved sysreset/watchdog uclass integration https://lists.denx.de/pipermail/u-boot/2021-August/458656.html Signed-off-by: Heinrich Schuchardt Reviewed-by: Simon Glass

Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq

2021-11-11T14:04:20Z

- device-tree sync-up with Linux for ls1028a - fixes/update in fsl-ddr driver, fsl-validate, lx2162a, fsl-mc, spintable code, configs, qspi node, pci - enable EFI_SET_TIME support in sl28 - powerpc: Drop -mstring

watchdog: don't autostart watchdog on Sunxi boards

2021-11-10T01:38:07Z

The Sunxi boards only support a 16 second watchdog timeout. This is too short to boot Linux. The UEFI specification requires 300 seconds as default timeout. Change the default for CONFIG_WATCHDOG_AUTOSTART for ARCH_SUNXI. Fixes: b147bd3607f8 ("sunxi: Enable watchdog timer support by default") Signed-off-by: Heinrich Schuchardt Tested-by: Andre Przywara Signed-off-by: Andre Przywara

watchdog: sp805_wdt: use correct compatible string

2021-11-09T11:48:23Z

According to the linux device tree specification the compatible string is: compatible = "arm,sp805", "arm,primecell"; Fix all users in u-boot. Signed-off-by: Michael Walle Reviewed-by: Priyanka Jain