u-boot.git/drivers/watchdog/ulp_wdog.c, branch master

Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"

2024-05-20T19:35:03+00:00

As part of bringing the master branch back in to next, we need to allow
for all of these changes to exist here.

Reported-by: Jonas Karlman 
Signed-off-by: Tom Rini

Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""

2024-05-19T14:16:36+00:00

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing
changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35.

Reported-by: Jonas Karlman 
Signed-off-by: Tom Rini

watchdog: Remove and add needed includes

2024-05-07T14:00:57+00:00

Remove  from this driver directory and when needed
add missing include files directly.

Acked-by: Angelo Dureghello 
Signed-off-by: Tom Rini

watchdog: ulp_wdog: guard reset_cpu with condition check

2023-05-21T14:54:40+00:00

There will be build error if CONFIG_SYSRESET is enabled, so guard
the reset_cpu with condition check here

Signed-off-by: Peng Fan 
Reviewed-by: Stefan Roese

watchdog: Clean up defaults for imx_watchdog / ulp_wdog

2023-01-20T17:27:23+00:00

In imx_watchdog, clean up the comment to just note the range now, as we
do not need to set the default here as Kconfig does this for us. For
ulp_wdog, set the default value via Kconfig instead.

Cc: Stefan Roese 
Cc: Stefano Babic 
Cc: Peng Fan 
Signed-off-by: Tom Rini 
Reviewed-by: Stefan Roese

watchdog: ulp_wdog: add driver model for ulp watchdog driver

2022-10-24T09:10:21+00:00

Enable driver model for ulp watchdog timer. When CONFIG_WDT=y and the
status of device node is "okay", initr_watchdog will be called and
finally calls ulp_wdt_probe() and ulp_wdt_start().

Signed-off-by: Alice Guo 
Reviewed-by: Ye Li 
Reviewed-by: Stefan Roese

watchdog: ulp_wdog: enable watchdog interrupt on imx93

2022-10-24T09:10:21+00:00

The reset source of the external PMIC on i.MX93 is WDOG_ANY PAD and the
source of WDOG_ANY PAD is interrupt. Therefore, using PMIC to reset
needs to enable the watchdog interrupt.

Signed-off-by: Alice Guo 
Reviewed-by: Stefan Roese

watchdog: ulp_wdog: Update watchdog driver for imx93

2022-10-24T09:10:21+00:00

The WDOG clocks are sourced from the fixed 32KHz (lpo_clk).When the
timeout period exceeds 2 seconds, the value written to the TOVAL
register is larger than 16-bit can represent. Enabling watchdog
prescaler to solve this problem.

Signed-off-by: Alice Guo 
Reviewed-by: Stefan Roese

ulp_wdog: Update ulp wdog driver for 32bits command

2022-10-24T09:10:21+00:00

To use 32bits refresh and unlock command as default, check the CMD32EN
bit to select the corresponding commands.

Signed-off-by: Ye Li 
Signed-off-by: Alice Guo 
Reviewed-by: Peng Fan 
Reviewed-by: Stefan Roese

mx7ulp: wdog: Wait for WDOG unlock and reconfiguration to complete

2021-07-17T12:59:56+00:00

According to i.MX7ULP Reference Manual we should wait for WDOG unlock
and reconfiguration to complete.

Section "59.5.3 Configure Watchdog" provides the following example:

DisableInterrupts; //disable global interrupt
WDOG_CNT = 0xD928C520; //unlock watchdog
while(WDOG_CS[ULK]==0); //wait until registers are unlocked
WDOG_TOVAL = 256; //set timeout value
WDOG_CS = WDOG_CS_EN(1) | WDOG_CS_CLK(1) | WDOG_CS_INT(1) |
	  WDOG_CS_WIN(0) | WDOG_CS_UPDATE(1);
while(WDOG_CS[RCS]==0); //wait until new configuration takes effect
EnableInterrupts; //enable global interrupt

Update U-Boot WDOG driver to align with i.MX7ULP reference manual.

Use 32 bits accessing to CS register. According to RM, the bits in
this register only can write once after unlock. So using 8 bits access
will cause problem.

Reviewed-by: Ye Li 
Signed-off-by: Breno Lima 
Signed-off-by: Peng Fan