/*
* Platform setup for the Freescale mpc885ads board
*
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* Copyright 2005 MontaVista Software Inc.
*
* Heavily modified by Scott Wood <scottwood@freescale.com>
* Copyright 2007 Freescale Semiconductor, Inc.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <linux/fsl_devices.h>
#include <linux/mii.h>
#include <linux/of_platform.h>
#include <asm/delay.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/time.h>
#include <asm/mpc8xx.h>
#include <asm/8xx_immap.h>
#include <asm/cpm1.h>
#include <asm/fs_pd.h>
#include <asm/udbg.h>
#include "mpc885ads.h"
#include "mpc8xx.h"
static u32 __iomem *bcsr, *bcsr5;
#ifdef CONFIG_PCMCIA_M8XX
static void pcmcia_hw_setup(int slot, int enable)
{
if (enable)
clrbits32(&bcsr[1], BCSR1_PCCEN);
else
setbits32(&bcsr[1], BCSR1_PCCEN);
}
static int pcmcia_set_voltage(int slot, int vcc, int vpp)
{
u32 reg = 0;
switch (vcc) {
case 0:
break;
case 33:
reg |= BCSR1_PCCVCC0;
break;
case 50:
reg |= BCSR1_PCCVCC1;
break;
default:
return 1;
}
switch (vpp) {
case 0:
break;
case 33:
case 50:
if (vcc == vpp)
reg |= BCSR1_PCCVPP1;
else
return 1;
break;
case 120:
if ((vcc == 33) || (vcc == 50))
reg |= BCSR1_PCCVPP0;
else
return 1;
default:
return 1;
}
/* first, turn off all power */
clrbits32(&bcsr[1], 0x00610000);
/* enable new powersettings */
setbits32(&bcsr[1], reg);
return 0;
}
#endif
struct cpm_pin {
int port, pin, flags;
};
static struct cpm_pin mpc885ads_pins[] = {
/* SMC1 */
{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
/* SMC2 */
#ifndef CONFIG_MPC8xx_SECOND_ETH_FEC2
{CPM_PORTE, 21, CPM_PIN_INPUT}, /* RX */
{CPM_PORTE, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
#endif
/* SCC3 */
{CPM_PORTA, 9, CPM_PIN_INPUT}, /* RX */
{CPM_PORTA, 8, CPM_PIN_INPUT}, /* TX */
{CPM_PORTC, 4, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
{CPM_PORTC, 5, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
{CPM_PORTE, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
{CPM_PORTE, 17, CPM_PIN_INPUT}, /* CLK5 */
{CPM_PORTE, 16, CPM_PIN_INPUT}, /* CLK6 */
/* MII1 */
{CPM_PORTA, 0, CPM_PIN_INPUT},
{CPM_PORTA, 1, CPM_PIN_INPUT},
{CPM_PORTA, 2, CPM_PIN_INPUT},
{CPM_PORTA, 3, CPM_PIN_INPUT},
{CPM_PORTA, 4, CPM_PIN_OUTPUT},
{CPM_PORTA, 10, CPM_PIN_OUTPUT},
{CPM_PORTA, 11, CPM_PIN_OUTPUT},
{CPM_PORTB, 19, CPM_PIN_INPUT},
{CPM_PORTB, 31, CPM_PIN_INPUT},
{CPM_PORTC, 12, CPM_PIN_INPUT},
{CPM_PORTC, 13, CPM_PIN_INPUT},
{CPM_PORTE, 30, CPM_PIN_OUTPUT},
{CPM_PORTE, 31, CPM_PIN_OUTPUT},
/* MII2 */
#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
{CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{CPM_PORTE, 16, CPM_PIN_OUTPUT},
{CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{CPM_PORTE, 21, CPM_PIN_OUTPUT},
{CPM_PORTE, 22, CPM_PIN_OUTPUT},
{CPM_PORTE, 23, CPM_PIN_OUTPUT},
{CPM_PORTE, 24, CPM_PIN_OUTPUT},
{CPM_PORTE, 25, CPM_PIN_OUTPUT},
{CPM_PORTE, 26, CPM_PIN_OUTPUT},
{CPM_PORTE, 27, CPM_PIN_OUTPUT},
{CPM_PORTE, 28, CPM_PIN_OUTPUT},
{CPM_PORTE, 29, CPM_PIN_OUTPUT},
#endif
/* I2C */
{CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
{CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
};
static void __init init_ioports(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(mpc885ads_pins); i++) {
struct cpm_pin *pin = &mpc885ads_pins[i];
cpm1_set_pin(pin->port, pin->pin, pin->flags);
}
cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_TX);
cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_RX);
/* Set FEC1 and FEC2 to MII mode */
clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
}
static void __init mpc885ads_setup_arch(void)
{
struct device_node *np;
cpm_reset();
init_ioports();
np = of_find_compatible_node(NULL, NULL, "fsl,mpc885ads-bcsr");
if (!np) {
printk(KERN_CRIT "Could not find fsl,mpc885ads-bcsr node\n");
return;
}
bcsr = of_iomap(np, 0);
bcsr5 = of_iomap(np, 1);
of_node_put(np);
if (!bcsr || !bcsr5) {
printk(KERN_CRIT "Could not remap BCSR\n");
return;
}
clrbits32(&bcsr[1], BCSR1_RS232EN_1);
#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
setbits32(&bcsr[1], BCSR1_RS232EN_2);
#else
clrbits32(&bcsr[1], BCSR1_RS232EN_2);
#endif
clrbits32(bcsr5, BCSR5_MII1_EN);
setbits32(bcsr5, BCSR5_MII1_RST);
udelay(1000);
clrbits32(bcsr5, BCSR5_MII1_RST);
#ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
clrbits32(bcsr5, BCSR5_MII2_EN);
setbits32(bcsr5, BCSR5_MII2_RST);
udelay(1000);
clrbits32(bcsr5, BCSR5_MII2_RST);
#else
setbits32(bcsr5, BCSR5_MII2_EN);
#endif
#ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
clrbits32(&bcsr[4], BCSR4_ETH10_RST);
udelay(1000);
setbits32(&bcsr[4], BCSR4_ETH10_RST);
setbits32(&bcsr[1], BCSR1_ETHEN);
np = of_find_node_by_path("/soc@ff000000/cpm@9c0/serial@a80");
#else
np = of_find_node_by_path("/soc@ff000000/cpm@9c0/ethernet@a40");
#endif
/* The SCC3 enet registers overlap the SMC1 registers, so
* one of the two must be removed from the device tree.
*/
if (np) {
of_detach_node(np);
of_node_put(np);
}
#ifdef CONFIG_PCMCIA_M8XX
/* Set up board specific hook-ups.*/
m8xx_pcmcia_ops.hw_ctrl = pcmcia_hw_setup;
m8xx_pcmcia_ops.voltage_set = pcmcia_set_voltage;
#endif
}
static int __init mpc885ads_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "fsl,mpc885ads");
}
static struct of_device_id __initdata of_bus_ids[] = {
{ .name = "soc", },
{ .name = "cpm", },
{ .name = "localbus", },
{},
};
static int __init declare_of_platform_devices(void)
{
/* Publish the QE devices */
of_platform_bus_probe(NULL, of_bus_ids, NULL);
return 0;
}
machine_device_initcall(mpc885_ads, declare_of_platform_devices);
define_machine(mpc885_ads) {
.name = "Freescale MPC885 ADS",
.probe = mpc885ads_probe,
.setup_arch = mpc885ads_setup_arch,
.init_IRQ = mpc8xx_pics_init,
.get_irq = mpc8xx_get_irq,
.restart = mpc8xx_restart,
.calibrate_decr = mpc8xx_calibrate_decr,
.set_rtc_time = mpc8xx_set_rtc_time,
.get_rtc_time = mpc8xx_get_rtc_time,
.progress = udbg_progress,
};