Commit 77ff7b74 authored by Bryan O'Donoghue's avatar Bryan O'Donoghue Committed by Wolfgang Denk
Browse files

8xx: Update OF support on 8xx



This patch does some shifting around of OF support on 8xx.
Signed-off-by: default avatarBryan O'Donoghue <bodonoghue@codehermit.ie>
parent 9c666a7d
......@@ -29,7 +29,7 @@ LIB = $(obj)lib$(CPU).a
START = start.o kgdb.o
COBJS = bedbug_860.o commproc.o cpu.o cpu_init.o \
fec.o i2c.o interrupts.o lcd.o scc.o \
fec.o fdt.o i2c.o interrupts.o lcd.o scc.o \
serial.o speed.o spi.o \
traps.o upatch.o video.o
SOBJS = plprcr_write.o
......
......@@ -637,14 +637,3 @@ void reset_8xx_watchdog (volatile immap_t * immr)
#endif /* CONFIG_WATCHDOG */
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_OF_LIBFDT)
void ft_cpu_setup (void *blob, bd_t *bd)
{
char * cpu_path = "/cpus/" OF_CPU;
do_fixup_by_path_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
}
#endif /* CONFIG_OF_LIBFDT */
/*
* Copyright 2008 (C) Bryan O'Donoghue
*
* Code copied & edited from Freescale mpc85xx stuff.
*
* 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 <libfdt.h>
#include <fdt_support.h>
DECLARE_GLOBAL_DATA_PTR;
void ft_cpu_setup(void *blob, bd_t *bd)
{
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"timebase-frequency", get_tbclk(), 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"bus-frequency", bd->bi_busfreq, 1);
do_fixup_by_prop_u32(blob, "device_type", "cpu", 4,
"clock-frequency", bd->bi_intfreq, 1);
do_fixup_by_compat_u32(blob, "fsl,cpm-brg", "clock-frequency",
gd->brg_clk, 1);
/* Fixup ethernet MAC addresses */
fdt_fixup_ethernet(blob, bd);
fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
}
......@@ -174,6 +174,27 @@ unsigned long measure_gclk(void)
#endif
void get_brgclk(uint sccr)
{
uint divider = 0;
switch((sccr&SCCR_DFBRG11)>>11){
case 0:
divider = 1;
break;
case 1:
divider = 4;
break;
case 2:
divider = 16;
break;
case 3:
divider = 64;
break;
}
gd->brg_clk = gd->cpu_clk/divider;
}
#if !defined(CONFIG_8xx_CPUCLK_DEFAULT)
/*
......@@ -223,6 +244,8 @@ int get_clocks (void)
gd->bus_clk = gd->cpu_clk / 2;
}
get_brgclk(sccr);
return (0);
}
......@@ -254,6 +277,8 @@ int get_clocks_866 (void)
gd->cpu_clk = measure_gclk ();
#endif
get_brgclk(immr->im_clkrst.car_sccr);
/* if cpu clock <= 66 MHz then set bus division factor to 1,
* otherwise set it to 2
*/
......
......@@ -40,8 +40,11 @@ typedef struct global_data {
bd_t *bd;
unsigned long flags;
unsigned long baudrate;
unsigned long cpu_clk; /* CPU clock in Hz! */
unsigned long cpu_clk; /* CPU clock in Hz! */
unsigned long bus_clk;
#if defined(CONFIG_8xx)
unsigned long brg_clk;
#endif
#if defined(CONFIG_CPM2)
/* There are many clocks on the MPC8260 - see page 9-5 */
unsigned long vco_out;
......
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