mirror of
https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
43 lines
1009 B
C
43 lines
1009 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2004
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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 <mpc8xx.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* get_clocks() fills in gd->cpu_clock depending on CONFIG_8xx_GCLK_FREQ
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*/
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int get_clocks(void)
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{
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immap_t __iomem *immap = (immap_t __iomem *)CONFIG_SYS_IMMR;
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uint sccr = in_be32(&immap->im_clkrst.car_sccr);
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uint divider = 1 << (((sccr & SCCR_DFBRG11) >> 11) * 2);
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/*
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* If for some reason measuring the gclk frequency won't
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* work, we return the hardwired value.
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* (For example, the cogent CMA286-60 CPU module has no
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* separate oscillator for PITRTCLK)
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*/
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gd->cpu_clk = CONFIG_8xx_GCLK_FREQ;
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if ((sccr & SCCR_EBDF11) == 0) {
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/* No Bus Divider active */
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gd->bus_clk = gd->cpu_clk;
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} else {
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/* The MPC8xx has only one BDF: half clock speed */
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gd->bus_clk = gd->cpu_clk / 2;
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}
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gd->arch.brg_clk = gd->cpu_clk / divider;
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return 0;
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}
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