drivers/clocksource/timer-armada-370-xp.c

1 // SPDX-License-Identifier: GPL-2.0
8  * Gregory CLEMENT <gregory.clement@free-electrons.com>
9  * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
11  * Timer 0 is used as free-running clocksource, while timer 1 is
14  * ---
19  *   * Armada 370 has no 25 MHz fixed timer.
21  *   * Armada XP cannot work properly without such 25 MHz fixed timer as
25  * See Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
68 /* Global timers are connected to the coherency fabric clock, and the
74  * SoC-specific data.
142 	writel(ticks_per_jiffy - 1, local_base + TIMER0_RELOAD_OFF);  in armada_370_xp_clkevt_set_periodic()
143 	writel(ticks_per_jiffy - 1, local_base + TIMER0_VAL_OFF);  in armada_370_xp_clkevt_set_periodic()
162 	evt->event_handler(evt);  in armada_370_xp_timer_interrupt()
168  * Setup the local clock events for a CPU.
181 	evt->name		= "armada_370_xp_per_cpu_tick";  in armada_370_xp_timer_starting_cpu()
182 	evt->features		= CLOCK_EVT_FEAT_ONESHOT |  in armada_370_xp_timer_starting_cpu()
184 	evt->shift		= 32;  in armada_370_xp_timer_starting_cpu()
185 	evt->rating		= 300;  in armada_370_xp_timer_starting_cpu()
186 	evt->set_next_event	= armada_370_xp_clkevt_next_event;  in armada_370_xp_timer_starting_cpu()
187 	evt->set_state_shutdown	= armada_370_xp_clkevt_shutdown;  in armada_370_xp_timer_starting_cpu()
188 	evt->set_state_periodic	= armada_370_xp_clkevt_set_periodic;  in armada_370_xp_timer_starting_cpu()
189 	evt->set_state_oneshot	= armada_370_xp_clkevt_shutdown;  in armada_370_xp_timer_starting_cpu()
190 	evt->tick_resume	= armada_370_xp_clkevt_shutdown;  in armada_370_xp_timer_starting_cpu()
191 	evt->irq		= armada_370_xp_clkevt_irq;  in armada_370_xp_timer_starting_cpu()
192 	evt->cpumask		= cpumask_of(cpu);  in armada_370_xp_timer_starting_cpu()
195 	enable_percpu_irq(evt->irq, 0);  in armada_370_xp_timer_starting_cpu()
204 	evt->set_state_shutdown(evt);  in armada_370_xp_timer_dying_cpu()
205 	disable_percpu_irq(evt->irq);  in armada_370_xp_timer_dying_cpu()
248 		return -ENXIO;  in armada_370_xp_timer_common_init()
254 		return -ENXIO;  in armada_370_xp_timer_common_init()
276 	 * Setup free-running clocksource timer (interrupts  in armada_370_xp_timer_common_init()
298 		pr_err("Failed to initialize clocksource mmio\n");  in armada_370_xp_timer_common_init()
304 		return -ENOMEM;  in armada_370_xp_timer_common_init()
307 	 * Setup clockevent timer (interrupt-driven).  in armada_370_xp_timer_common_init()
335 	struct clk *clk = of_clk_get_by_name(np, "fixed");  in armada_xp_timer_init()
339 		pr_err("Failed to get clock\n");  in armada_xp_timer_init()
351 TIMER_OF_DECLARE(armada_xp, "marvell,armada-xp-timer",
359 	clk = of_clk_get_by_name(np, "fixed");  in armada_375_timer_init()
373 		/* Must have at least a clock */  in armada_375_timer_init()
375 			pr_err("Failed to get clock\n");  in armada_375_timer_init()
389 TIMER_OF_DECLARE(armada_375, "marvell,armada-375-timer",
399 		pr_err("Failed to get clock\n");  in armada_370_timer_init()
412 TIMER_OF_DECLARE(armada_370, "marvell,armada-370-timer",