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fsl_get_immr() uses /soc/ranges to determine the immr. mpc885_get_clock() transforms a crystal frequency into a system frequency according to the PLL register settings. pq2_get_clocks() does the same as the above for the PowerQUICC II, except that it produces several different clocks. The mpc8xx/pq2 set_clocks() functions modify common properties in the device tree based on the given clock data. The mpc885/pq2 fixup_clocks() functions call get_clocks(), and pass the results to set_clocks(). Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/*
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* Freescale SOC support functions
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*
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* Author: Scott Wood <scottwood@freescale.com>
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*
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* Copyright (c) 2007 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include "ops.h"
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#include "types.h"
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#include "fsl-soc.h"
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#include "stdio.h"
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static u32 prop_buf[MAX_PROP_LEN / 4];
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u32 *fsl_get_immr(void)
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{
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void *soc;
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unsigned long ret = 0;
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soc = find_node_by_devtype(NULL, "soc");
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if (soc) {
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int size;
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u32 naddr;
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size = getprop(soc, "#address-cells", prop_buf, MAX_PROP_LEN);
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if (size == 4)
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naddr = prop_buf[0];
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else
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naddr = 2;
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if (naddr != 1 && naddr != 2)
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goto err;
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size = getprop(soc, "ranges", prop_buf, MAX_PROP_LEN);
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if (size < 12)
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goto err;
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if (prop_buf[0] != 0)
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goto err;
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if (naddr == 2 && prop_buf[1] != 0)
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goto err;
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if (!dt_xlate_addr(soc, prop_buf + naddr, 8, &ret))
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ret = 0;
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}
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err:
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if (!ret)
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printf("fsl_get_immr: Failed to find immr base\r\n");
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return (u32 *)ret;
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}
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