soc: renesas: rx: enable option function select register 0

Enables OSF0 register select for IWDT driver setting on start mode

Signed-off-by: Quy Tran <[email protected]>

Author: quytranpzz

soc/renesas/rx/rx130/Kconfig.defconfig

@@ -17,4 +17,66 @@ config SYS_CLOCK_TICKS_PER_SEC
 config INITIALIZATION_STACK_SIZE
 	default 512
 
+if WDT_RENESAS_RX_IWDT_AUTO_START_MODE
+
+config WDT_RENESAS_RX_IWDTSTRT
+	int "IWDT OFS0 Start Mode Select"
+	default 0
+	help
+	  0: IWDT is automatically activated in auto-start mode after a reset
+	  1: IWDT is halted after a reset
+
+config WDT_RENESAS_RX_OFS0_IWDTTOPS
+	int "IWDT Timeout Period Select"
+	default 3
+	help
+	  0: 128 cycles (007Fh)
+	  1: 512 cycles (01FFh)
+	  2: 1024 cycles (03FFh)
+	  3: 2048 cycles (07FFh)
+
+config WDT_RENESAS_RX_OFS0_IWDTCKS
+	int "IWDT Clock Divide Ratio Select"
+	default 15
+	help
+	  0: No division
+	  2: Divide-by-16
+	  3: Divide-by-32
+	  4: Divide-by-64
+	  15: Divide-by-128
+	  5: Divide-by-256
+
+config WDT_RENESAS_RX_OFS0_IWDTRPSS
+	int "IWDT Window Start Position Select"
+	default 3
+	help
+	  0: 25%
+	  1: 50%
+	  2: 75%
+	  3: 100% (window start position is not specified.)
+
+config WDT_RENESAS_RX_OFS0_IWDTRPES
+	int "IWDT Window End Position Select"
+	default 3
+	help
+	  0: 75%
+	  1: 50%
+	  2: 25%
+	  3: 0% (window end position is not specified.)
+
+config WDT_RENESAS_RX_OFS0_IWDTRSTIRQS
+	int "IWDT Reset Interrupt Request Select"
+	default 0
+	help
+	  0: Non-maskable interrupt request output is enabled.
+	  1: Reset output is enabled.
+
+config WDT_RENESAS_RX_OFS0_IWDTSLCSTP
+	int "IWDT Sleep Mode Count Stop Control"
+	default 0
+	help
+	  0: Count stop is disabled.
+	  1: Count is stopped at a transition to sleep mode, software standby mode, or deep sleep mode.
+
+endif # WDT_RENESAS_RX_IWDT_AUTO_START_MODE
 endif # SOC_SERIES_RX130

soc/renesas/rx/rx130/ofsm.h

@@ -33,7 +33,21 @@
  * by programming the OFS0 register. When enabled, IWDT starts counting automatically
  * starts after a reset.
  */
+
+#ifdef CONFIG_WDT_RENESAS_RX_IWDT_AUTO_START_MODE
+#define SOC_RX_OFS0                                                                                \
+	((CONFIG_WDT_RENESAS_RX_IWDTSTRT << 1) |                  /* bit 1 */                      \
+	 ((CONFIG_WDT_RENESAS_RX_OFS0_IWDTTOPS & 0x3) << 2) |     /* bits 2-3 */                   \
+	 ((CONFIG_WDT_RENESAS_RX_OFS0_IWDTCKS & 0xF) << 4) |      /* bits 4-7 */                   \
+	 ((CONFIG_WDT_RENESAS_RX_OFS0_IWDTRPES & 0x3) << 8) |     /* bits 8-9 */                   \
+	 ((CONFIG_WDT_RENESAS_RX_OFS0_IWDTRPSS & 0x3) << 10) |    /* bits 10-11 */                 \
+	 ((CONFIG_WDT_RENESAS_RX_OFS0_IWDTRSTIRQS & 0x1) << 12) | /* bit 12 */                     \
+	 ((CONFIG_WDT_RENESAS_RX_OFS0_IWDTSLCSTP & 0x1) << 14) |  /* bit 14 */                     \
+	 0xFFFFA001UL                                             /* reserved bits 0,13,15..31 */  \
+	)
+#else
 #define SOC_RX_OFS0 (0xFFFFFFFFUL)
+#endif
 
 /* Option Function Select Register 1 (OFS1) (Voltage detection and HOCO)
  */