[PATCH v2] spl: watchdog: introduce SPL_HW_WATCHDOG

[Oleksandr Suvorov]

Add SPL_HW_WATCHDOG Kconfig symbol which can be used to enable
non-WDT hardware watchdog in SPL.

Co-developed-by: Igor Opaniuk <igor.opaniuk at foundries.io>
Signed-off-by: Igor Opaniuk <igor.opaniuk at foundries.io>
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov at foundries.io>
---

Changes in v2:
- remove mistakenly included unwanted changes

 common/spl/Kconfig        | 1 -
 drivers/Makefile          | 1 +
 drivers/sysreset/Kconfig  | 6 ++++++
 drivers/sysreset/Makefile | 2 +-
 drivers/watchdog/Kconfig  | 4 ++++
 5 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index c5dd476db58..07d9dac29bd 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -1351,7 +1351,6 @@ config SPL_THERMAL
 
 config SPL_WATCHDOG
 	bool "Support watchdog drivers"
-	imply SPL_WDT if !HW_WATCHDOG
 	help
 	  Enable support for watchdog drivers in SPL. A watchdog is
 	  typically a hardware peripheral which can reset the system when it
diff --git a/drivers/Makefile b/drivers/Makefile
index efc2a4afb24..2eb8ec0a894 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -62,6 +62,7 @@ obj-$(CONFIG_SPL_USB_GADGET) += usb/gadget/
 obj-$(CONFIG_SPL_USB_GADGET) += usb/common/
 obj-$(CONFIG_SPL_USB_GADGET) += usb/gadget/udc/
 obj-$(CONFIG_SPL_WATCHDOG) += watchdog/
+obj-$(CONFIG_SPL_HW_WATCHDOG) += watchdog/
 obj-$(CONFIG_SPL_USB_HOST) += usb/host/
 obj-$(CONFIG_SPL_SATA) += ata/ scsi/
 obj-$(CONFIG_SPL_LEGACY_BLOCK) += block/
diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig
index bdbe2a95364..0d21673e402 100644
--- a/drivers/sysreset/Kconfig
+++ b/drivers/sysreset/Kconfig
@@ -157,6 +157,12 @@ config SYSRESET_WATCHDOG
 	help
 	  Reboot support for generic watchdog reset.
 
+config SPL_SYSRESET_WATCHDOG
+	bool "Enable support for watchdog reboot driver in SPL mode"
+	select SPL_WDT
+	help
+	  Reboot support for generic watchdog reset in SPL mode.
+
 config SYSRESET_WATCHDOG_AUTO
 	bool "Automatically register first watchdog with sysreset"
 	depends on SYSRESET_WATCHDOG
diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index 40c876764af..e5a7fc07a81 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -18,7 +18,7 @@ obj-$(CONFIG_SYSRESET_SOCFPGA) += sysreset_socfpga.o
 obj-$(CONFIG_SYSRESET_SOCFPGA_SOC64) += sysreset_socfpga_soc64.o
 obj-$(CONFIG_SYSRESET_TI_SCI) += sysreset-ti-sci.o
 obj-$(CONFIG_SYSRESET_SYSCON) += sysreset_syscon.o
-obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o
+obj-$(CONFIG_$(SPL_)SYSRESET_WATCHDOG) += sysreset_watchdog.o
 obj-$(CONFIG_SYSRESET_RESETCTL) += sysreset_resetctl.o
 obj-$(CONFIG_$(SPL_TPL_)SYSRESET_AT91) += sysreset_at91.o
 obj-$(CONFIG_$(SPL_TPL_)SYSRESET_X86) += sysreset_x86.o
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 07fc4940e91..d696a04fc18 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -39,9 +39,13 @@ config WATCHDOG_TIMEOUT_MSECS
 config HW_WATCHDOG
 	bool
 
+config SPL_HW_WATCHDOG
+	bool
+
 config IMX_WATCHDOG
 	bool "Enable Watchdog Timer support for IMX and LSCH2 of NXP"
 	select HW_WATCHDOG if !WDT
+	select SPL_HW_WATCHDOG if !SPL_WDT
 	help
 	  Select this to enable the IMX and LSCH2 of Layerscape watchdog
 	  driver.
-- 
2.41.0