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clocksource/drivers/sun4i-timer: Only register a sched_clock on sun4i and sun5i
sun6i and newer have an arm arch timer which is a better sched_clock source then the sun4i-timer, and sched_clock does not have priorities, so do not register the sun4i-timer sched_clock at all on sun6i and newer. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: ben.dooks@codethink.co.uk Cc: digetx@gmail.com Cc: laurent.pinchart+renesas@ideasonboard.com Cc: linux-arm-kernel@lists.infradead.org Cc: viresh.kumar@linaro.org Link: http://lkml.kernel.org/r/1427746633-9137-8-git-send-email-daniel.lezcano@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -170,7 +170,15 @@ static void __init sun4i_timer_init(struct device_node *node)
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TIMER_CTL_CLK_SRC(TIMER_CTL_CLK_SRC_OSC24M),
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timer_base + TIMER_CTL_REG(1));
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sched_clock_register(sun4i_timer_sched_read, 32, rate);
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/*
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* sched_clock_register does not have priorities, and on sun6i and
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* later there is a better sched_clock registered by arm_arch_timer.c
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*/
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if (of_machine_is_compatible("allwinner,sun4i-a10") ||
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of_machine_is_compatible("allwinner,sun5i-a13") ||
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of_machine_is_compatible("allwinner,sun5i-a10s"))
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sched_clock_register(sun4i_timer_sched_read, 32, rate);
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clocksource_mmio_init(timer_base + TIMER_CNTVAL_REG(1), node->name,
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rate, 350, 32, clocksource_mmio_readl_down);
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