10  * - Base prescale of (2 << 25), providing tick duration T_0: 168ms @ 200MHz
77 	u32 v;  in otto_wdt_start()  local
79 	v = ioread32(ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_start()
80 	v |= OTTO_WDT_CTRL_ENABLE;  in otto_wdt_start()
81 	iowrite32(v, ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_start()
89 	u32 v;  in otto_wdt_stop()  local
91 	v = ioread32(ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_stop()
92 	v &= ~OTTO_WDT_CTRL_ENABLE;  in otto_wdt_stop()
93 	iowrite32(v, ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_stop()
109 	return DIV_ROUND_CLOSEST(1 << (25 + prescale), ctrl->clk_rate_khz);  in otto_wdt_tick_ms()
135 	u32 v;  in otto_wdt_determine_timeouts()  local
151 	v = ioread32(ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_determine_timeouts()
153 	v &= ~(OTTO_WDT_CTRL_PRESCALE | OTTO_WDT_CTRL_PHASE1 | OTTO_WDT_CTRL_PHASE2);  in otto_wdt_determine_timeouts()
154 	v |= FIELD_PREP(OTTO_WDT_CTRL_PHASE1, phase1_ticks - 1);  in otto_wdt_determine_timeouts()
155 	v |= FIELD_PREP(OTTO_WDT_CTRL_PHASE2, phase2_ticks - 1);  in otto_wdt_determine_timeouts()
156 	v |= FIELD_PREP(OTTO_WDT_CTRL_PRESCALE, prescale);  in otto_wdt_determine_timeouts()
158 	iowrite32(v, ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_determine_timeouts()
184 	u32 v;  in otto_wdt_restart()  local
201 	v = FIELD_PREP(OTTO_WDT_CTRL_RST_MODE, reset_mode) | OTTO_WDT_CTRL_ENABLE;  in otto_wdt_restart()
202 	iowrite32(v, ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_restart()
272 	u32 v;  in otto_wdt_probe_reset_mode()  local
294 	v = ioread32(ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_probe_reset_mode()
295 	v &= ~OTTO_WDT_CTRL_RST_MODE;  in otto_wdt_probe_reset_mode()
296 	v |= FIELD_PREP(OTTO_WDT_CTRL_RST_MODE, mode);  in otto_wdt_probe_reset_mode()
297 	iowrite32(v, ctrl->base + OTTO_WDT_REG_CTRL);  in otto_wdt_probe_reset_mode()