mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 13:38:40 +00:00
e177edcd15
512x is very similar to 83xx and most
of this is patterned after code from 83xx.
New platform:
changed:
arch/powerpc/Kconfig
arch/powerpc/platforms/Kconfig
arch/powerpc/platforms/Kconfig.cputype
arch/powerpc/platforms/Makefile
new:
arch/powerpc/platforms/512x/*
include/asm-powerpc/mpc512x.h
Signed-off-by: John Rigby <jrigby@freescale.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
|
|
*
|
|
* Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007
|
|
*
|
|
* Description:
|
|
* MPC5121 ADS board setup
|
|
*
|
|
* This 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/kernel.h>
|
|
#include <linux/io.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/of_platform.h>
|
|
|
|
#include <asm/machdep.h>
|
|
#include <asm/ipic.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/time.h>
|
|
|
|
/**
|
|
* mpc512x_find_ips_freq - Find the IPS bus frequency for a device
|
|
* @node: device node
|
|
*
|
|
* Returns IPS bus frequency, or 0 if the bus frequency cannot be found.
|
|
*/
|
|
unsigned long
|
|
mpc512x_find_ips_freq(struct device_node *node)
|
|
{
|
|
struct device_node *np;
|
|
const unsigned int *p_ips_freq = NULL;
|
|
|
|
of_node_get(node);
|
|
while (node) {
|
|
p_ips_freq = of_get_property(node, "bus-frequency", NULL);
|
|
if (p_ips_freq)
|
|
break;
|
|
|
|
np = of_get_parent(node);
|
|
of_node_put(node);
|
|
node = np;
|
|
}
|
|
if (node)
|
|
of_node_put(node);
|
|
|
|
return p_ips_freq ? *p_ips_freq : 0;
|
|
}
|
|
EXPORT_SYMBOL(mpc512x_find_ips_freq);
|
|
|
|
static struct of_device_id __initdata of_bus_ids[] = {
|
|
{ .name = "soc", },
|
|
{ .name = "localbus", },
|
|
{},
|
|
};
|
|
|
|
static void __init mpc5121_ads_declare_of_platform_devices(void)
|
|
{
|
|
/* Find every child of the SOC node and add it to of_platform */
|
|
if (of_platform_bus_probe(NULL, of_bus_ids, NULL))
|
|
printk(KERN_ERR __FILE__ ": "
|
|
"Error while probing of_platform bus\n");
|
|
}
|
|
|
|
static void __init mpc5121_ads_init_IRQ(void)
|
|
{
|
|
struct device_node *np;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,ipic");
|
|
if (!np)
|
|
return;
|
|
|
|
ipic_init(np, 0);
|
|
of_node_put(np);
|
|
|
|
/*
|
|
* Initialize the default interrupt mapping priorities,
|
|
* in case the boot rom changed something on us.
|
|
*/
|
|
ipic_set_default_priority();
|
|
}
|
|
|
|
/*
|
|
* Called very early, MMU is off, device-tree isn't unflattened
|
|
*/
|
|
static int __init mpc5121_ads_probe(void)
|
|
{
|
|
unsigned long root = of_get_flat_dt_root();
|
|
|
|
return of_flat_dt_is_compatible(root, "fsl,mpc5121ads");
|
|
}
|
|
|
|
define_machine(mpc5121_ads) {
|
|
.name = "MPC5121 ADS",
|
|
.probe = mpc5121_ads_probe,
|
|
.init = mpc5121_ads_declare_of_platform_devices,
|
|
.init_IRQ = mpc5121_ads_init_IRQ,
|
|
.get_irq = ipic_get_irq,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
};
|