diff options
Diffstat (limited to 'arch/ppc/syslib/ibm440gp_common.c')
-rw-r--r-- | arch/ppc/syslib/ibm440gp_common.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/arch/ppc/syslib/ibm440gp_common.c b/arch/ppc/syslib/ibm440gp_common.c deleted file mode 100644 index a3927ec9b5d..00000000000 --- a/arch/ppc/syslib/ibm440gp_common.c +++ /dev/null @@ -1,73 +0,0 @@ -/* - * PPC440GP system library - * - * Matt Porter <mporter@mvista.com> - * Copyright 2002-2003 MontaVista Software Inc. - * - * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> - * Copyright (c) 2003 Zultys Technologies - * - * 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. - * - */ -#include <linux/types.h> -#include <asm/reg.h> -#include <asm/ibm44x.h> -#include <asm/mmu.h> - -/* - * Calculate 440GP clocks - */ -void __init ibm440gp_get_clocks(struct ibm44x_clocks* p, - unsigned int sys_clk, - unsigned int ser_clk) -{ - u32 cpc0_sys0 = mfdcr(DCRN_CPC0_SYS0); - u32 cpc0_cr0 = mfdcr(DCRN_CPC0_CR0); - u32 opdv = ((cpc0_sys0 >> 10) & 0x3) + 1; - u32 epdv = ((cpc0_sys0 >> 8) & 0x3) + 1; - - if (cpc0_sys0 & 0x2){ - /* Bypass system PLL */ - p->cpu = p->plb = sys_clk; - } - else { - u32 fbdv, fwdva, fwdvb, m, vco; - - fbdv = (cpc0_sys0 >> 18) & 0x0f; - if (!fbdv) - fbdv = 16; - - fwdva = 8 - ((cpc0_sys0 >> 15) & 0x7); - fwdvb = 8 - ((cpc0_sys0 >> 12) & 0x7); - - /* Feedback path */ - if (cpc0_sys0 & 0x00000080){ - /* PerClk */ - m = fwdvb * opdv * epdv; - } - else { - /* CPU clock */ - m = fbdv * fwdva; - } - vco = sys_clk * m; - p->cpu = vco / fwdva; - p->plb = vco / fwdvb; - } - - p->opb = p->plb / opdv; - p->ebc = p->opb / epdv; - - if (cpc0_cr0 & 0x00400000){ - /* External UART clock */ - p->uart0 = p->uart1 = ser_clk; - } - else { - /* Internal UART clock */ - u32 uart_div = ((cpc0_cr0 >> 16) & 0x1f) + 1; - p->uart0 = p->uart1 = p->plb / uart_div; - } -} |