ep88xc.c
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/*
* Platform setup for the Embedded Planet EP88xC board
*
* Author: 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/of_address.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <asm/machdep.h>
#include <asm/io.h>
#include <asm/udbg.h>
#include <asm/cpm1.h>
#include "mpc8xx.h"
struct cpm_pin {
int port, pin, flags;
};
static struct cpm_pin ep88xc_pins[] = {
/* SMC1 */
{1, 24, CPM_PIN_INPUT}, /* RX */
{1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
/* SCC2 */
{0, 12, CPM_PIN_INPUT}, /* TX */
{0, 13, CPM_PIN_INPUT}, /* RX */
{2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */
{2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */
{2, 14, CPM_PIN_INPUT}, /* RTS */
/* MII1 */
{0, 0, CPM_PIN_INPUT},
{0, 1, CPM_PIN_INPUT},
{0, 2, CPM_PIN_INPUT},
{0, 3, CPM_PIN_INPUT},
{0, 4, CPM_PIN_OUTPUT},
{0, 10, CPM_PIN_OUTPUT},
{0, 11, CPM_PIN_OUTPUT},
{1, 19, CPM_PIN_INPUT},
{1, 31, CPM_PIN_INPUT},
{2, 12, CPM_PIN_INPUT},
{2, 13, CPM_PIN_INPUT},
{3, 8, CPM_PIN_INPUT},
{4, 30, CPM_PIN_OUTPUT},
{4, 31, CPM_PIN_OUTPUT},
/* MII2 */
{4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{4, 16, CPM_PIN_OUTPUT},
{4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
{4, 21, CPM_PIN_OUTPUT},
{4, 22, CPM_PIN_OUTPUT},
{4, 23, CPM_PIN_OUTPUT},
{4, 24, CPM_PIN_OUTPUT},
{4, 25, CPM_PIN_OUTPUT},
{4, 26, CPM_PIN_OUTPUT},
{4, 27, CPM_PIN_OUTPUT},
{4, 28, CPM_PIN_OUTPUT},
{4, 29, CPM_PIN_OUTPUT},
/* USB */
{0, 6, CPM_PIN_INPUT}, /* CLK2 */
{0, 14, CPM_PIN_INPUT}, /* USBOE */
{0, 15, CPM_PIN_INPUT}, /* USBRXD */
{2, 6, CPM_PIN_OUTPUT}, /* USBTXN */
{2, 7, CPM_PIN_OUTPUT}, /* USBTXP */
{2, 10, CPM_PIN_INPUT}, /* USBRXN */
{2, 11, CPM_PIN_INPUT}, /* USBRXP */
/* Misc */
{1, 26, CPM_PIN_INPUT}, /* BRGO2 */
{1, 27, CPM_PIN_INPUT}, /* BRGO1 */
};
static void __init init_ioports(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) {
struct cpm_pin *pin = &ep88xc_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_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */
cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
}
static u8 __iomem *ep88xc_bcsr;
#define BCSR7_SCC2_ENABLE 0x10
#define BCSR8_PHY1_ENABLE 0x80
#define BCSR8_PHY1_POWER 0x40
#define BCSR8_PHY2_ENABLE 0x20
#define BCSR8_PHY2_POWER 0x10
#define BCSR9_USB_ENABLE 0x80
#define BCSR9_USB_POWER 0x40
#define BCSR9_USB_HOST 0x20
#define BCSR9_USB_FULL_SPEED_TARGET 0x10
static void __init ep88xc_setup_arch(void)
{
struct device_node *np;
cpm_reset();
init_ioports();
np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr");
if (!np) {
printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n");
return;
}
ep88xc_bcsr = of_iomap(np, 0);
of_node_put(np);
if (!ep88xc_bcsr) {
printk(KERN_CRIT "Could not remap BCSR\n");
return;
}
setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE);
setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER |
BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER);
}
static int __init ep88xc_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "fsl,ep88xc");
}
static const struct of_device_id of_bus_ids[] __initconst = {
{ .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(ep88xc, declare_of_platform_devices);
define_machine(ep88xc) {
.name = "Embedded Planet EP88xC",
.probe = ep88xc_probe,
.setup_arch = ep88xc_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,
};