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/*
*
* (c) 2004 Sascha Hauer <sascha@saschahauer.de>
*
* 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/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <init.h>
#include <driver.h>
ulong imx_get_spllclk(void)
{
return imx_decode_pll(SPCTL0, CONFIG_SYSPLL_CLK_FREQ);
}
ulong imx_get_mpllclk(void)
{
return imx_decode_pll(MPCTL0, CONFIG_SYSPLL_CLK_FREQ);
}
ulong imx_get_fclk(void)
{
return (( CSCR>>15)&1) ? imx_get_mpllclk()>>1 : imx_get_mpllclk();
}
ulong imx_get_hclk(void)
{
u32 bclkdiv = (( CSCR >> 10 ) & 0xf) + 1;
return imx_get_spllclk() / bclkdiv;
}
ulong imx_get_bclk(void)
{
return imx_get_hclk();
}
ulong imx_get_perclk1(void)
{
return imx_get_spllclk() / (((PCDR) & 0xf)+1);
}
ulong imx_get_perclk2(void)
{
return imx_get_spllclk() / (((PCDR>>4) & 0xf)+1);
}
ulong imx_get_perclk3(void)
{
return imx_get_spllclk() / (((PCDR>>16) & 0x7f)+1);
}
ulong imx_get_uartclk(void)
{
return imx_get_perclk1();
}
ulong imx_get_gptclk(void)
{
return imx_get_perclk1() / (((PCDR) & 0xf)+1);
}
#if 0
typedef enum imx_cookies {
PARAM_CPUCLK,
PARAM_SYSCLOCK,
PARAM_PERCLK1,
PARAM_PERCLK2,
PARAM_PERCLK3,
PARAM_BCLK,
PARAM_HCLK,
PARAM_FCLK,
PARAM_ARCH_NUMBER,
PARAM_LAST,
} imx_cookies_t;
static struct param_d imx_params[] = {
[PARAM_CPUCLK] = { .name = "imx_cpuclk", .flags = PARAM_FLAG_RO},
[PARAM_SYSCLOCK] = { .name = "imx_system_clk", .flags = PARAM_FLAG_RO},
[PARAM_PERCLK1] = { .name = "imx_perclk1", .flags = PARAM_FLAG_RO},
[PARAM_PERCLK2] = { .name = "imx_perclk2", .flags = PARAM_FLAG_RO},
[PARAM_PERCLK3] = { .name = "imx_perclk3", .flags = PARAM_FLAG_RO},
[PARAM_BCLK] = { .name = "imx_bclk", .flags = PARAM_FLAG_RO},
[PARAM_HCLK] = { .name = "imx_hclk", .flags = PARAM_FLAG_RO},
[PARAM_FCLK] = { .name = "imx_fclk", .flags = PARAM_FLAG_RO},
[PARAM_ARCH_NUMBER] = { .name = "arch_number",},
};
static int imx_clk_init(void)
{
int i;
imx_params[PARAM_CPUCLK].value.val_ulong = get_mcuPLLCLK();
imx_params[PARAM_SYSCLOCK].value.val_ulong = get_systemPLLCLK();
imx_params[PARAM_PERCLK1].value.val_ulong = get_PERCLK1();
imx_params[PARAM_PERCLK2].value.val_ulong = get_PERCLK2();
imx_params[PARAM_PERCLK3].value.val_ulong = get_PERCLK3();
imx_params[PARAM_BCLK].value.val_ulong = get_BCLK();
imx_params[PARAM_HCLK].value.val_ulong = get_HCLK();
imx_params[PARAM_FCLK].value.val_ulong = get_FCLK();
imx_params[PARAM_ARCH_NUMBER].value.val_ulong = arch_number;
for (i = 0; i < PARAM_LAST; i++)
global_add_parameter(&imx_params[i]);
return 0;
}
device_initcall(imx_clk_init);
#endif
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