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https://github.com/brain-hackers/u-boot-brain
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eb05dcfea2
The tmu_bit value evaluates to (ffs(4) >> 1) - 1 = (3 >> 1) - 1 = 0. Just drop the tmu_bit completely as well as CONFIG_SYS_TMU_CLK_DIV. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
56 lines
998 B
C
56 lines
998 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2009
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* Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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*
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* (C) Copyright 2007-2012
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* Nobobuhiro Iwamatsu <iwamatsu@nigauri.org>
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*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <sh_tmu.h>
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#define TCR_TPSC 0x07
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static struct tmu_regs *tmu = (struct tmu_regs *)TMU_BASE;
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unsigned long get_tbclk(void)
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{
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return get_tmu0_clk_rate() >> 2;
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}
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unsigned long timer_read_counter(void)
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{
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return ~readl(&tmu->tcnt0);
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}
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static void tmu_timer_start(unsigned int timer)
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{
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if (timer > 2)
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return;
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writeb(readb(&tmu->tstr) | (1 << timer), &tmu->tstr);
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}
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static void tmu_timer_stop(unsigned int timer)
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{
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if (timer > 2)
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return;
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writeb(readb(&tmu->tstr) & ~(1 << timer), &tmu->tstr);
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}
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int timer_init(void)
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{
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writew(readw(&tmu->tcr0) & ~TCR_TPSC, &tmu->tcr0);
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tmu_timer_stop(0);
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tmu_timer_start(0);
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return 0;
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}
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