/*
* Copyright 2006 Freescale Semiconductor, Inc. All rights reserved.
*
* Author: Li Yang <LeoLi@freescale.com>
* Yin Olivia <Hong-hua.Yin@freescale.com>
*
* Description:
* MPC8360E MDS board specific routines.
*
* Changelog:
* Jun 21, 2006 Initial version
*
* 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/stddef.h>
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <linux/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <sysdev/simple_gpio.h>
#include <asm/qe.h>
#include <asm/qe_ic.h>
#include "mpc83xx.h"
#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init mpc836x_mds_setup_arch(void)
{
struct device_node *np;
u8 __iomem *bcsr_regs = NULL;
if (ppc_md.progress)
ppc_md.progress("mpc836x_mds_setup_arch()", 0);
/* Map BCSR area */
np = of_find_node_by_name(NULL, "bcsr");
if (np) {
struct resource res;
of_address_to_resource(np, 0, &res);
bcsr_regs = ioremap(res.start, resource_size(&res));
of_node_put(np);
}
mpc83xx_setup_pci();
#ifdef CONFIG_QUICC_ENGINE
qe_reset();
if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
par_io_init(np);
of_node_put(np);
for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
par_io_of_config(np);
#ifdef CONFIG_QE_USB
/* Must fixup Par IO before QE GPIO chips are registered. */
par_io_config_pin(1, 2, 1, 0, 3, 0); /* USBOE */
par_io_config_pin(1, 3, 1, 0, 3, 0); /* USBTP */
par_io_config_pin(1, 8, 1, 0, 1, 0); /* USBTN */
par_io_config_pin(1, 10, 2, 0, 3, 0); /* USBRXD */
par_io_config_pin(1, 9, 2, 1, 3, 0); /* USBRP */
par_io_config_pin(1, 11, 2, 1, 3, 0); /* USBRN */
par_io_config_pin(2, 20, 2, 0, 1, 0); /* CLK21 */
#endif /* CONFIG_QE_USB */
}
if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
!= NULL){
uint svid;
/* Reset the Ethernet PHY */
#define BCSR9_GETHRST 0x20
clrbits8(&bcsr_regs[9], BCSR9_GETHRST);
udelay(1000);
setbits8(&bcsr_regs[9], BCSR9_GETHRST);
/* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
svid = mfspr(SPRN_SVR);
if (svid == 0x80480021) {
void __iomem *immap;
immap = ioremap(get_immrbase() + 0x14a8, 8);
/*
* IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
* IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
*/
setbits32(immap, 0x0c003000);
/*
* IMMR + 0x14AC[20:27] = 10101010
* (data delay for both UCC's)
*/
clrsetbits_be32(immap + 4, 0xff0, 0xaa0);
iounmap(immap);
}
iounmap(bcsr_regs);
of_node_put(np);
}
#endif /* CONFIG_QUICC_ENGINE */
}
machine_device_initcall(mpc836x_mds, mpc83xx_declare_of_platform_devices);
#ifdef CONFIG_QE_USB
static int __init mpc836x_usb_cfg(void)
{
u8 __iomem *bcsr;
struct device_node *np;
const char *mode;
int ret = 0;
np = of_find_compatible_node(NULL, NULL, "fsl,mpc8360mds-bcsr");
if (!np)
return -ENODEV;
bcsr = of_iomap(np, 0);
of_node_put(np);
if (!bcsr)
return -ENOMEM;
np = of_find_compatible_node(NULL, NULL, "fsl,mpc8323-qe-usb");
if (!np) {
ret = -ENODEV;
goto err;
}
#define BCSR8_TSEC1M_MASK (0x3 << 6)
#define BCSR8_TSEC1M_RGMII (0x0 << 6)
#define BCSR8_TSEC2M_MASK (0x3 << 4)
#define BCSR8_TSEC2M_RGMII (0x0 << 4)
/*
* Default is GMII (2), but we should set it to RGMII (0) if we use
* USB (Eth PHY is in RGMII mode anyway).
*/
clrsetbits_8(&bcsr[8], BCSR8_TSEC1M_MASK | BCSR8_TSEC2M_MASK,
BCSR8_TSEC1M_RGMII | BCSR8_TSEC2M_RGMII);
#define BCSR13_USBMASK 0x0f
#define BCSR13_nUSBEN 0x08 /* 1 - Disable, 0 - Enable */
#define BCSR13_USBSPEED 0x04 /* 1 - Full, 0 - Low */
#define BCSR13_USBMODE 0x02 /* 1 - Host, 0 - Function */
#define BCSR13_nUSBVCC 0x01 /* 1 - gets VBUS, 0 - supplies VBUS */
clrsetbits_8(&bcsr[13], BCSR13_USBMASK, BCSR13_USBSPEED);
mode = of_get_property(np, "mode", NULL);
if (mode && !strcmp(mode, "peripheral")) {
setbits8(&bcsr[13], BCSR13_nUSBVCC);
qe_usb_clock_set(QE_CLK21, 48000000);
} else {
setbits8(&bcsr[13], BCSR13_USBMODE);
/*
* The BCSR GPIOs are used to control power and
* speed of the USB transceiver. This is needed for
* the USB Host only.
*/
simple_gpiochip_init("fsl,mpc8360mds-bcsr-gpio");
}
of_node_put(np);
err:
iounmap(bcsr);
return ret;
}
machine_arch_initcall(mpc836x_mds, mpc836x_usb_cfg);
#endif /* CONFIG_QE_USB */
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc836x_mds_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "MPC836xMDS");
}
define_machine(mpc836x_mds) {
.name = "MPC836x MDS",
.probe = mpc836x_mds_probe,
.setup_arch = mpc836x_mds_setup_arch,
.init_IRQ = mpc83xx_ipic_and_qe_init_IRQ,
.get_irq = ipic_get_irq,
.restart = mpc83xx_restart,
.time_init = mpc83xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};