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author | wdenk <wdenk> | 2004-08-01 22:48:16 +0000 |
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committer | wdenk <wdenk> | 2004-08-01 22:48:16 +0000 |
commit | 281e00a3be453a169d854f824a460359d10f92bb (patch) | |
tree | 43dab398f1d6f601bb44df108427f7e0c611d68d /cpu/arm920t/speed.c | |
parent | cfca5e604d5692f081cc1a9185ca5dc6dc77599d (diff) | |
download | u-boot-imx-281e00a3be453a169d854f824a460359d10f92bb.zip u-boot-imx-281e00a3be453a169d854f824a460359d10f92bb.tar.gz u-boot-imx-281e00a3be453a169d854f824a460359d10f92bb.tar.bz2 |
* Code cleanup
* Patch by Sascha Hauer, 28 Jun:
- add generic support for Motorola i.MX architecture
- add support for mx1ads, mx1fs2 and scb9328 boards
* Patches by Marc Leeman, 23 Jul 2004:
- Add define for the PCI/Memory Buffer Configuration Register
- corrected comments in cpu/mpc824x/cpu_init.c
* Add support for multiple serial interfaces
(for example to allow modem dial-in / dial-out)
Diffstat (limited to 'cpu/arm920t/speed.c')
-rw-r--r-- | cpu/arm920t/speed.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/cpu/arm920t/speed.c b/cpu/arm920t/speed.c deleted file mode 100644 index 1f43543..0000000 --- a/cpu/arm920t/speed.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * (C) Copyright 2001-2002 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2002 - * David Mueller, ELSOFT AG, d.mueller@elsoft.ch - * - * 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 - */ - -/* This code should work for both the S3C2400 and the S3C2410 - * as they seem to have the same PLL and clock machinery inside. - * The different address mapping is handled by the s3c24xx.h files below. - */ - -#include <common.h> -#if defined(CONFIG_S3C2400) -#include <s3c2400.h> -#elif defined(CONFIG_S3C2410) -#include <s3c2410.h> -#endif - -#define MPLL 0 -#define UPLL 1 - -/* ------------------------------------------------------------------------- */ -/* NOTE: This describes the proper use of this file. - * - * CONFIG_SYS_CLK_FREQ should be defined as the input frequency of the PLL. - * - * get_FCLK(), get_HCLK(), get_PCLK() and get_UCLK() return the clock of - * the specified bus in HZ. - */ -/* ------------------------------------------------------------------------- */ - -static ulong get_PLLCLK(int pllreg) -{ - S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); - ulong r, m, p, s; - - if (pllreg == MPLL) - r = clk_power->MPLLCON; - else if (pllreg == UPLL) - r = clk_power->UPLLCON; - else - hang(); - - m = ((r & 0xFF000) >> 12) + 8; - p = ((r & 0x003F0) >> 4) + 2; - s = r & 0x3; - - return((CONFIG_SYS_CLK_FREQ * m) / (p << s)); -} - -/* return FCLK frequency */ -ulong get_FCLK(void) -{ - return(get_PLLCLK(MPLL)); -} - -/* return HCLK frequency */ -ulong get_HCLK(void) -{ - S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); - - return((clk_power->CLKDIVN & 0x2) ? get_FCLK()/2 : get_FCLK()); -} - -/* return PCLK frequency */ -ulong get_PCLK(void) -{ - S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER(); - - return((clk_power->CLKDIVN & 0x1) ? get_HCLK()/2 : get_HCLK()); -} - -/* return UCLK frequency */ -ulong get_UCLK(void) -{ - return(get_PLLCLK(UPLL)); -} |