ARM: 6375/1: plat-nomadik: MTU timer trivial bug fix
timer0 to 3 are all on mtu block 0, so don't calculate the clock event rate based upon mtu block 1's clock speed. Acked-by: Alessandro Rubini <rubini@unipv.it> Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -131,17 +131,12 @@ void __init nmdk_timer_init(void)
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{
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unsigned long rate;
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struct clk *clk0;
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struct clk *clk1;
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u32 cr;
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clk0 = clk_get_sys("mtu0", NULL);
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BUG_ON(IS_ERR(clk0));
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clk1 = clk_get_sys("mtu1", NULL);
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BUG_ON(IS_ERR(clk1));
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clk_enable(clk0);
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clk_enable(clk1);
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/*
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* Tick rate is 2.4MHz for Nomadik and 110MHz for ux500:
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@ -170,15 +165,8 @@ void __init nmdk_timer_init(void)
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pr_err("timer: failed to initialize clock source %s\n",
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nmdk_clksrc.name);
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/* Timer 1 is used for events, fix according to rate */
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cr = MTU_CRn_32BITS;
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rate = clk_get_rate(clk1);
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if (rate > 16 << 20) {
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rate /= 16;
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cr |= MTU_CRn_PRESCALE_16;
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} else {
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cr |= MTU_CRn_PRESCALE_1;
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}
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/* Timer 1 is used for events */
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clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE);
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writel(cr | MTU_CRn_ONESHOT, mtu_base + MTU_CR(1)); /* off, currently */
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