mirror of
https://github.com/AsahiLinux/u-boot
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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>
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2013-2014 Panasonic Corporation
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* Copyright (C) 2015-2016 Socionext Inc.
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*/
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#include <common.h>
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#include <linux/errno.h>
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#include <linux/io.h>
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#include "../init.h"
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#include "../sc-regs.h"
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#undef DPLL_SSC_RATE_1PER
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int uniphier_pro4_dpll_init(const struct uniphier_board_data *bd)
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{
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unsigned int dram_freq = bd->dram_freq;
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u32 tmp;
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/*
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* Set Frequency
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* Set 0xc(1600MHz)/0xd(1333MHz)/0xe(1066MHz)
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* to FOUT ( DPLLCTRL.bit[29:20] )
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*/
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tmp = readl(SC_DPLLCTRL);
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tmp &= ~(0x000f0000);
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switch (dram_freq) {
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case 1333:
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tmp |= 0x000d0000;
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break;
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case 1600:
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tmp |= 0x000c0000;
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break;
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default:
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pr_err("Unsupported frequency");
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return -EINVAL;
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}
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/*
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* Set Moduration rate
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* Set 0x0(1%)/0x1(2%) to SSC_RATE(DPLLCTRL.bit[15])
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*/
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#if defined(DPLL_SSC_RATE_1PER)
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tmp &= ~0x00008000;
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#else
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tmp |= 0x00008000;
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#endif
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writel(tmp, SC_DPLLCTRL);
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tmp = readl(SC_DPLLCTRL2);
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tmp |= SC_DPLLCTRL2_NRSTDS;
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writel(tmp, SC_DPLLCTRL2);
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/* Wait until dpll gets stable */
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udelay(500);
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return 0;
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}
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