diff options
author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:12 -0500 |
---|---|---|
committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:24 +0200 |
commit | a4145534851bf74619cb373a942613a74547bb82 (patch) | |
tree | 653ca8e04cad5da1eecac601b77f1f9b9cfd5fc5 /cpu/mcf5227x/speed.c | |
parent | 84ad688473bec2875e171b71040eb9e033c6c206 (diff) | |
download | u-boot-imx-a4145534851bf74619cb373a942613a74547bb82.zip u-boot-imx-a4145534851bf74619cb373a942613a74547bb82.tar.gz u-boot-imx-a4145534851bf74619cb373a942613a74547bb82.tar.bz2 |
m68k: Move cpu/$CPU to arch/m68k/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'cpu/mcf5227x/speed.c')
-rw-r--r-- | cpu/mcf5227x/speed.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/cpu/mcf5227x/speed.c b/cpu/mcf5227x/speed.c deleted file mode 100644 index 7e385d3..0000000 --- a/cpu/mcf5227x/speed.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - * - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.com) - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <asm/processor.h> - -#include <asm/immap.h> - -DECLARE_GLOBAL_DATA_PTR; - -/* - * Low Power Divider specifications - */ -#define CLOCK_LPD_MIN (1 << 0) /* Divider (decoded) */ -#define CLOCK_LPD_MAX (1 << 15) /* Divider (decoded) */ - -#define CLOCK_PLL_FVCO_MAX 540000000 -#define CLOCK_PLL_FVCO_MIN 300000000 - -#define CLOCK_PLL_FSYS_MAX 266666666 -#define CLOCK_PLL_FSYS_MIN 100000000 -#define MHZ 1000000 - -void clock_enter_limp(int lpdiv) -{ - volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM; - int i, j; - - /* Check bounds of divider */ - if (lpdiv < CLOCK_LPD_MIN) - lpdiv = CLOCK_LPD_MIN; - if (lpdiv > CLOCK_LPD_MAX) - lpdiv = CLOCK_LPD_MAX; - - /* Round divider down to nearest power of two */ - for (i = 0, j = lpdiv; j != 1; j >>= 1, i++) ; - - /* Apply the divider to the system clock */ - ccm->cdr = (ccm->cdr & 0xF0FF) | CCM_CDR_LPDIV(i); - - /* Enable Limp Mode */ - ccm->misccr |= CCM_MISCCR_LIMP; -} - -/* - * brief Exit Limp mode - * warning The PLL should be set and locked prior to exiting Limp mode - */ -void clock_exit_limp(void) -{ - volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM; - volatile pll_t *pll = (volatile pll_t *)MMAP_PLL; - - /* Exit Limp mode */ - ccm->misccr &= ~CCM_MISCCR_LIMP; - - /* Wait for the PLL to lock */ - while (!(pll->psr & PLL_PSR_LOCK)) ; -} - -/* - * get_clocks() fills in gd->cpu_clock and gd->bus_clk - */ -int get_clocks(void) -{ - - volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM; - volatile pll_t *pll = (volatile pll_t *)MMAP_PLL; - int vco, temp, pcrvalue, pfdr; - u8 bootmode; - - pcrvalue = pll->pcr & 0xFF0F0FFF; - pfdr = pcrvalue >> 24; - - if (pfdr == 0x1E) - bootmode = 0; /* Normal Mode */ - -#ifdef CONFIG_CF_SBF - bootmode = 3; /* Serial Mode */ -#endif - - if (bootmode == 0) { - /* Normal mode */ - vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC; - if ((vco < CLOCK_PLL_FVCO_MIN) || (vco > CLOCK_PLL_FVCO_MAX)) { - /* Default value */ - pcrvalue = (pll->pcr & 0x00FFFFFF); - pcrvalue |= 0x1E << 24; - pll->pcr = pcrvalue; - vco = - ((pll->pcr & 0xFF000000) >> 24) * - CONFIG_SYS_INPUT_CLKSRC; - } - gd->vco_clk = vco; /* Vco clock */ - } else if (bootmode == 3) { - /* serial mode */ - vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC; - gd->vco_clk = vco; /* Vco clock */ - } - - if ((ccm->ccr & CCM_MISCCR_LIMP) == CCM_MISCCR_LIMP) { - /* Limp mode */ - } else { - gd->inp_clk = CONFIG_SYS_INPUT_CLKSRC; /* Input clock */ - - temp = (pll->pcr & PLL_PCR_OUTDIV1_MASK) + 1; - gd->cpu_clk = vco / temp; /* cpu clock */ - - temp = ((pll->pcr & PLL_PCR_OUTDIV2_MASK) >> 4) + 1; - gd->flb_clk = vco / temp; /* flexbus clock */ - gd->bus_clk = gd->flb_clk; - } - -#ifdef CONFIG_FSL_I2C - gd->i2c1_clk = gd->bus_clk; -#endif - - return (0); -} |