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/*
* Keymile mgcoge support
* Copyright 2008 DENX Software Engineering GmbH
* Author: Heiko Schocher <hs@denx.de>
*
* based on code from:
* Copyright 2007 Freescale Semiconductor, Inc.
* Author: Scott Wood <scottwood@freescale.com>
*
* 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/init.h>
#include <linux/interrupt.h>
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
#include <asm/io.h>
#include <asm/cpm2.h>
#include <asm/udbg.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/mpc8260.h>
#include <asm/prom.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/cpm2_pic.h>
#include "pq2.h"
static void __init mgcoge_pic_init(void)
{
struct device_node *np = of_find_compatible_node(NULL, NULL, "fsl,pq2-pic");
if (!np) {
printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
return;
}
cpm2_pic_init(np);
of_node_put(np);
}
struct cpm_pin {
int port, pin, flags;
};
static __initdata struct cpm_pin mgcoge_pins[] = {
/* SMC2 */
{1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{1, 9, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
/* SCC4 */
{3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{3, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{3, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{3, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{4, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
{4, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
};
static void __init init_ioports(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(mgcoge_pins); i++) {
const struct cpm_pin *pin = &mgcoge_pins[i];
cpm2_set_pin(pin->port - 1, pin->pin, pin->flags);
}
cpm2_smc_clk_setup(CPM_CLK_SMC2, CPM_BRG8);
cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK7, CPM_CLK_RX);
cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK8, CPM_CLK_TX);
}
static void __init mgcoge_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mgcoge_setup_arch()", 0);
cpm2_reset();
/* When this is set, snooping CPM DMA from RAM causes
* machine checks. See erratum SIU18.
*/
clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP);
init_ioports();
if (ppc_md.progress)
ppc_md.progress("mgcoge_setup_arch(), finish", 0);
}
static __initdata struct of_device_id of_bus_ids[] = {
{ .compatible = "simple-bus", },
{},
};
static int __init declare_of_platform_devices(void)
{
of_platform_bus_probe(NULL, of_bus_ids, NULL);
return 0;
}
machine_device_initcall(mgcoge, declare_of_platform_devices);
/*
* Called very early, device-tree isn't unflattened
*/
static int __init mgcoge_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "keymile,mgcoge");
}
define_machine(mgcoge)
{
.name = "Keymile MGCOGE",
.probe = mgcoge_probe,
.setup_arch = mgcoge_setup_arch,
.init_IRQ = mgcoge_pic_init,
.get_irq = cpm2_get_irq,
.calibrate_decr = generic_calibrate_decr,
.restart = pq2_restart,
.progress = udbg_progress,
};
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