linux-stable.git/drivers/watchdog, branch linux-5.14.y Linux kernel stable tree ar7: fix kernel builds for compiler test 2021-11-17T10:04:36+00:00 Jackie Liu liuyun01@kylinos.cn 2021-09-07T02:49:04+00:00 bac37c7433c5d88c669d29427f393d1489dd7af8 [ Upstream commit 28b7ee33a2122569ac065cad578bf23f50cc65c3 ] TI AR7 Watchdog Timer is only build for 32bit. Avoid error like: In file included from drivers/watchdog/ar7_wdt.c:29: ./arch/mips/include/asm/mach-ar7/ar7.h: In function ‘ar7_is_titan’: ./arch/mips/include/asm/mach-ar7/ar7.h:111:24: error: implicit declaration of function ‘KSEG1ADDR’; did you mean ‘CKSEG1ADDR’? [-Werror=implicit-function-declaration] 111 | return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x24)) & 0xffff) == | ^~~~~~~~~ | CKSEG1ADDR Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20210907024904.4127611-1-liu.yun@linux.dev Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 28b7ee33a2122569ac065cad578bf23f50cc65c3 ]

TI AR7 Watchdog Timer is only build for 32bit.

Avoid error like:
In file included from drivers/watchdog/ar7_wdt.c:29:
./arch/mips/include/asm/mach-ar7/ar7.h: In function ‘ar7_is_titan’:
./arch/mips/include/asm/mach-ar7/ar7.h:111:24: error: implicit declaration of function ‘KSEG1ADDR’; did you mean ‘CKSEG1ADDR’? [-Werror=implicit-function-declaration]
  111 |  return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x24)) & 0xffff) ==
      |                        ^~~~~~~~~
      |                        CKSEG1ADDR

Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210907024904.4127611-1-liu.yun@linux.dev
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
watchdog: f71808e_wdt: fix inaccurate report in WDIOC_GETTIMEOUT 2021-11-17T10:04:36+00:00 Ahmad Fatoum a.fatoum@pengutronix.de 2021-08-09T16:20:31+00:00 85b7c9ef119b1c11bc8ceb16485f1ef2120dfb1c [ Upstream commit 164483c735190775f29d0dcbac0363adc51a068d ] The fintek watchdog timer can configure timeouts of second granularity only up to 255 seconds. Beyond that, the timeout needs to be configured with minute granularity. WDIOC_GETTIMEOUT should report the actual timeout configured, not just echo back the timeout configured by the user. Do so. Fixes: 96cb4eb019ce ("watchdog: f71808e_wdt: new watchdog driver for Fintek F71808E and F71882FG") Suggested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.kernel.org/r/5e17960fe8cc0e3cb2ba53de4730b75d9a0f33d5.1628525954.git-series.a.fatoum@pengutronix.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 164483c735190775f29d0dcbac0363adc51a068d ]

The fintek watchdog timer can configure timeouts of second granularity
only up to 255 seconds. Beyond that, the timeout needs to be configured
with minute granularity. WDIOC_GETTIMEOUT should report the actual
timeout configured, not just echo back the timeout configured by the
user. Do so.

Fixes: 96cb4eb019ce ("watchdog: f71808e_wdt: new watchdog driver for Fintek F71808E and F71882FG")
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.kernel.org/r/5e17960fe8cc0e3cb2ba53de4730b75d9a0f33d5.1628525954.git-series.a.fatoum@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
watchdog: Fix OMAP watchdog early handling 2021-11-17T10:03:30+00:00 Walter Stoll walter.stoll@duagon.com 2021-10-14T10:22:29+00:00 c0c99f6c2c2dc8e4bc2038acc66e565a6190e52d [ Upstream commit cd004d8299f1dc6cfa6a4eea8f94cb45eaedf070 ] TI's implementation does not service the watchdog even if the kernel command line parameter omap_wdt.early_enable is set to 1. This patch fixes the issue. Signed-off-by: Walter Stoll <walter.stoll@duagon.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/88a8fe5229cd68fa0f1fd22f5d66666c1b7057a0.camel@duagon.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit cd004d8299f1dc6cfa6a4eea8f94cb45eaedf070 ]

TI's implementation does not service the watchdog even if the kernel
command line parameter omap_wdt.early_enable is set to 1. This patch
fixes the issue.

Signed-off-by: Walter Stoll <walter.stoll@duagon.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/88a8fe5229cd68fa0f1fd22f5d66666c1b7057a0.camel@duagon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
watchdog: sbsa: only use 32-bit accessors 2021-11-02T18:51:00+00:00 Jamie Iles quic_jiles@quicinc.com 2021-09-03T11:21:01+00:00 b341612b659d450d4b3a2cdd79754e7f4fe9bbd4 [ Upstream commit f31afb502c3151855df3ed40f5974c7884c10d14 ] SBSA says of the generic watchdog: All registers are 32 bits in size and should be accessed using 32-bit reads and writes. If an access size other than 32 bits is used then the results are IMPLEMENTATION DEFINED. and for qemu, the implementation will only allow 32-bit accesses resulting in a synchronous external abort when configuring the watchdog. Use lo_hi_* accessors rather than a readq/writeq. Fixes: abd3ac7902fb ("watchdog: sbsa: Support architecture version 1") Signed-off-by: Jamie Iles <quic_jiles@quicinc.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com> Link: https://lore.kernel.org/r/20210903112101.493552-1-quic_jiles@quicinc.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit f31afb502c3151855df3ed40f5974c7884c10d14 ]

SBSA says of the generic watchdog:

  All registers are 32 bits in size and should be accessed using 32-bit
  reads and writes. If an access size other than 32 bits is used then
  the results are IMPLEMENTATION DEFINED.

and for qemu, the implementation will only allow 32-bit accesses
resulting in a synchronous external abort when configuring the watchdog.
Use lo_hi_* accessors rather than a readq/writeq.

Fixes: abd3ac7902fb ("watchdog: sbsa: Support architecture version 1")
Signed-off-by: Jamie Iles <quic_jiles@quicinc.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20210903112101.493552-1-quic_jiles@quicinc.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Revert "watchdog: iTCO_wdt: Account for rebooting on second timeout" 2021-11-02T18:50:55+00:00 Guenter Roeck linux@roeck-us.net 2021-10-08T00:33:02+00:00 b7ca59297fa34fa01ca69e6e4848e1694a6465f7 commit 6e7733ef0bb9372d5491168635f6ecba8ac3cb8a upstream. This reverts commit cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout") and commit aec42642d91f ("watchdog: iTCO_wdt: Fix detection of SMI-off case") since those patches cause a regression on certain boards (https://bugzilla.kernel.org/show_bug.cgi?id=213809). While this revert may result in some boards to only reset after twice the configured timeout value, that is still better than a watchdog reset after half the configured value. Fixes: cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout") Fixes: aec42642d91f ("watchdog: iTCO_wdt: Fix detection of SMI-off case") Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Mantas Mikulėnas <grawity@gmail.com> Reported-by: Javier S. Pedro <debbugs@javispedro.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20211008003302.1461733-1-linux@roeck-us.net Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 6e7733ef0bb9372d5491168635f6ecba8ac3cb8a upstream.

This reverts commit cb011044e34c ("watchdog: iTCO_wdt: Account for
rebooting on second timeout") and commit aec42642d91f ("watchdog: iTCO_wdt:
Fix detection of SMI-off case") since those patches cause a regression
on certain boards (https://bugzilla.kernel.org/show_bug.cgi?id=213809).

While this revert may result in some boards to only reset after twice
the configured timeout value, that is still better than a watchdog reset
after half the configured value.

Fixes: cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout")
Fixes: aec42642d91f ("watchdog: iTCO_wdt: Fix detection of SMI-off case")
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Mantas Mikulėnas <grawity@gmail.com>
Reported-by: Javier S. Pedro <debbugs@javispedro.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211008003302.1461733-1-linux@roeck-us.net
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
watchdog/sb_watchdog: fix compilation problem due to COMPILE_TEST 2021-10-07T05:53:04+00:00 Jackie Liu liuyun01@kylinos.cn 2021-09-13T07:32:20+00:00 7be199764d46aafcbe2e0bb90997cc4de312bfa8 [ Upstream commit c388a18957efdf31db8e97ec4d2d4b7dc1ca9a44 ] Compiling sb_watchdog needs to clearly define SIBYTE_HDR_FEATURES. In arch/mips/sibyte/Platform like: cflags-$(CONFIG_SIBYTE_BCM112X) += \ -I$(srctree)/arch/mips/include/asm/mach-sibyte \ -DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL Otherwise, SIBYTE_HDR_FEATURES is SIBYTE_HDR_FMASK_ALL. SIBYTE_HDR_FMASK_ALL is mean: #define SIBYTE_HDR_FMASK_ALL SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL \ | SIBYTE_HDR_FMASK_1480_ALL) So, If not limited to CPU_SB1, we will get such an error: arch/mips/include/asm/sibyte/bcm1480_scd.h:261: error: "M_SPC_CFG_CLEAR" redefined [-Werror] arch/mips/include/asm/sibyte/bcm1480_scd.h:262: error: "M_SPC_CFG_ENABLE" redefined [-Werror] Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit c388a18957efdf31db8e97ec4d2d4b7dc1ca9a44 ]

Compiling sb_watchdog needs to clearly define SIBYTE_HDR_FEATURES.
In arch/mips/sibyte/Platform like:

  cflags-$(CONFIG_SIBYTE_BCM112X) +=                                      \
                -I$(srctree)/arch/mips/include/asm/mach-sibyte          \
                -DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL

Otherwise, SIBYTE_HDR_FEATURES is SIBYTE_HDR_FMASK_ALL.
SIBYTE_HDR_FMASK_ALL is mean:

 #define SIBYTE_HDR_FMASK_ALL  SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL \
				     | SIBYTE_HDR_FMASK_1480_ALL)

So, If not limited to CPU_SB1, we will get such an error:

  arch/mips/include/asm/sibyte/bcm1480_scd.h:261: error: "M_SPC_CFG_CLEAR" redefined [-Werror]
  arch/mips/include/asm/sibyte/bcm1480_scd.h:262: error: "M_SPC_CFG_ENABLE" redefined [-Werror]

Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
watchdog: Fix NULL pointer dereference when releasing cdev 2021-09-22T10:39:29+00:00 Curtis Klein curtis.klein@hpe.com 2021-06-23T06:26:23+00:00 08a901da171dc5dd4c54148fe3cc9704a4da4f44 [ Upstream commit c7b178dae139f8857edc50888cfbf251cd974a38 ] watchdog_hrtimer_pretimeout_stop needs the watchdog device to have a valid pointer to the watchdog core data to stop the pretimeout hrtimer. Therefore it needs to be called before the pointers are cleared in watchdog_cdev_unregister. Fixes: 7b7d2fdc8c3e ("watchdog: Add hrtimer-based pretimeout feature") Reported-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Curtis Klein <curtis.klein@hpe.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/1624429583-5720-1-git-send-email-curtis.klein@hpe.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit c7b178dae139f8857edc50888cfbf251cd974a38 ]

watchdog_hrtimer_pretimeout_stop needs the watchdog device to have a
valid pointer to the watchdog core data to stop the pretimeout hrtimer.
Therefore it needs to be called before the pointers are cleared in
watchdog_cdev_unregister.

Fixes: 7b7d2fdc8c3e ("watchdog: Add hrtimer-based pretimeout feature")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Curtis Klein <curtis.klein@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1624429583-5720-1-git-send-email-curtis.klein@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
watchdog: Start watchdog in watchdog_set_last_hw_keepalive only if appropriate 2021-09-22T10:39:26+00:00 Jan Kiszka jan.kiszka@siemens.com 2021-08-01T07:56:25+00:00 ed0f3b99c5a1444f65db1c62fea5c570d6ab6530 [ Upstream commit dbe80cf471f940db3063197b7adb1169f89be9ed ] We must not pet a running watchdog when handle_boot_enabled is off because this will kick off automatic triggering before userland is running, defeating the purpose of the handle_boot_enabled control. Furthermore, don't ping in case watchdog_set_last_hw_keepalive was called incorrectly when the hardware watchdog is actually not running. Fixed: cef9572e9af3 ("watchdog: add support for adjusting last known HW keepalive time") Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/93d56386-6e37-060b-55ce-84de8cde535f@web.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit dbe80cf471f940db3063197b7adb1169f89be9ed ]

We must not pet a running watchdog when handle_boot_enabled is off
because this will kick off automatic triggering before userland is
running, defeating the purpose of the handle_boot_enabled control.
Furthermore, don't ping in case watchdog_set_last_hw_keepalive was
called incorrectly when the hardware watchdog is actually not running.

Fixed: cef9572e9af3 ("watchdog: add support for adjusting last known HW keepalive time")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/93d56386-6e37-060b-55ce-84de8cde535f@web.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
watchdog: iTCO_wdt: Fix detection of SMI-off case 2021-09-18T11:43:24+00:00 Jan Kiszka jan.kiszka@siemens.com 2021-07-26T11:46:13+00:00 c7dcbbd5d308ca7458e364fec5375e5d847299b4 commit aec42642d91fc86ddc03e97f0139c6c34ee6b6b1 upstream. Obviously, the test needs to run against the register content, not its address. Fixes: cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout") Cc: stable@vger.kernel.org Reported-by: Mantas Mikulėnas <grawity@gmail.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Mantas Mikulėnas <grawity@gmail.com> Link: https://lore.kernel.org/r/d84f8e06-f646-8b43-d063-fb11f4827044@siemens.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit aec42642d91fc86ddc03e97f0139c6c34ee6b6b1 upstream.

Obviously, the test needs to run against the register content, not its
address.

Fixes: cb011044e34c ("watchdog: iTCO_wdt: Account for rebooting on second timeout")
Cc: stable@vger.kernel.org
Reported-by: Mantas Mikulėnas <grawity@gmail.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Mantas Mikulėnas <grawity@gmail.com>
Link: https://lore.kernel.org/r/d84f8e06-f646-8b43-d063-fb11f4827044@siemens.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'linux-watchdog-5.14-rc1' of git://www.linux-watchdog.org/linux-watchdog 2021-07-07T19:57:46+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-07-07T19:57:46+00:00 9d69294be2a363a0128f4dc0316a7a4bb29ea91f Pull watchdog updates from Wim Van Sebroeck: - Add Mstar MSC313e WDT driver - Add support for sama7g5-wdt - Add compatible for SC7280 SoC - Add compatible for Mediatek MT8195 - sbsa: Support architecture version 1 - Removal of the MV64x60 watchdog driver - Extra PCI IDs for hpwdt - Add hrtimer-based pretimeout feature - Add {min,max}_timeout sysfs nodes - keembay timeout and pre-timeout handling - Several fixes, cleanups and improvements * tag 'linux-watchdog-5.14-rc1' of git://www.linux-watchdog.org/linux-watchdog: (56 commits) watchdog: iTCO_wdt: use dev_err() instead of pr_err() watchdog: Add Mstar MSC313e WDT driver dt-bindings: watchdog: Add Mstar MSC313e WDT devicetree bindings documentation watchdog: iTCO_wdt: Account for rebooting on second timeout dt-bindings: watchdog: Convert arm,sbsa-gwdt to DT schema dt-bindings: watchdog: sama5d4-wdt: add compatible for sama7g5-wdt watchdog: sama5d4_wdt: add support for sama7g5-wdt dt-bindings: watchdog: sama5d4-wdt: convert to yaml watchdog: ziirave_wdt: Remove VERSION_FMT defines and add sysfs newlines dt-bindings: watchdog: Add compatible for Mediatek MT8195 dt-bindings: watchdog: dw-wdt: add description for rk3568 watchdog: imx_sc_wdt: fix pretimeout watchdog: diag288_wdt: Remove redundant assignment watchdog: Add hrtimer-based pretimeout feature dt-bindings: watchdog: Add compatible for SC7280 SoC watchdog: qcom: Move suspend/resume to suspend_late/resume_early watchdog: Fix a typo in the file orion_wdt.c watchdog: jz4740: Fix return value check in jz4740_wdt_probe() watchdog: Remove MV64x60 watchdog driver doc: mtk-wdt: support pre-timeout when the bark irq is available ... 
Pull watchdog updates from Wim Van Sebroeck:

 - Add Mstar MSC313e WDT driver

 - Add support for sama7g5-wdt

 - Add compatible for SC7280 SoC

 - Add compatible for Mediatek MT8195

 - sbsa: Support architecture version 1

 - Removal of the MV64x60 watchdog driver

 - Extra PCI IDs for hpwdt

 - Add hrtimer-based pretimeout feature

 - Add {min,max}_timeout sysfs nodes

 - keembay timeout and pre-timeout handling

 - Several fixes, cleanups and improvements

* tag 'linux-watchdog-5.14-rc1' of git://www.linux-watchdog.org/linux-watchdog: (56 commits)
  watchdog: iTCO_wdt: use dev_err() instead of pr_err()
  watchdog: Add Mstar MSC313e WDT driver
  dt-bindings: watchdog: Add Mstar MSC313e WDT devicetree bindings documentation
  watchdog: iTCO_wdt: Account for rebooting on second timeout
  dt-bindings: watchdog: Convert arm,sbsa-gwdt to DT schema
  dt-bindings: watchdog: sama5d4-wdt: add compatible for sama7g5-wdt
  watchdog: sama5d4_wdt: add support for sama7g5-wdt
  dt-bindings: watchdog: sama5d4-wdt: convert to yaml
  watchdog: ziirave_wdt: Remove VERSION_FMT defines and add sysfs newlines
  dt-bindings: watchdog: Add compatible for Mediatek MT8195
  dt-bindings: watchdog: dw-wdt: add description for rk3568
  watchdog: imx_sc_wdt: fix pretimeout
  watchdog: diag288_wdt: Remove redundant assignment
  watchdog: Add hrtimer-based pretimeout feature
  dt-bindings: watchdog: Add compatible for SC7280 SoC
  watchdog: qcom: Move suspend/resume to suspend_late/resume_early
  watchdog: Fix a typo in the file orion_wdt.c
  watchdog: jz4740: Fix return value check in jz4740_wdt_probe()
  watchdog: Remove MV64x60 watchdog driver
  doc: mtk-wdt: support pre-timeout when the bark irq is available
  ...