Release 4.14 arch/powerpc/platforms/52xx/lite5200.c

/*
 * Freescale Lite5200 board support
 *
 * Written by: Grant Likely <grant.likely@secretlab.ca>
 *
 * Copyright (C) Secret Lab Technologies Ltd. 2006. All rights reserved.
 * Copyright 2006 Freescale Semiconductor, Inc. All rights reserved.
 *
 * Description:
 * 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.
 */


#undef DEBUG

#include <linux/init.h>
#include <linux/pci.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/mpc52xx.h>

/* ************************************************************************
 *
 * Setup the architecture
 *
 */

/* mpc5200 device tree match tables */

static const struct of_device_id mpc5200_cdm_ids[] __initconst = {
	{ .compatible = "fsl,mpc5200-cdm", },
	{ .compatible = "mpc5200-cdm", },
	{}
};


static const struct of_device_id mpc5200_gpio_ids[] __initconst = {
	{ .compatible = "fsl,mpc5200-gpio", },
	{ .compatible = "mpc5200-gpio", },
	{}
};

/*
 * Fix clock configuration.
 *
 * Firmware is supposed to be responsible for this.  If you are creating a
 * new board port, do *NOT* duplicate this code.  Fix your boot firmware
 * to set it correctly in the first place
 */

static void __init

lite5200_fix_clock_config(void)
{
	struct device_node *np;
	struct mpc52xx_cdm  __iomem *cdm;
	/* Map zones */
	np = of_find_matching_node(NULL, mpc5200_cdm_ids);
	cdm = of_iomap(np, 0);
	of_node_put(np);
	if (!cdm) {
		printk(KERN_ERR "%s() failed; expect abnormal behaviour\n",
		       __func__);
		return;
	}

	/* Use internal 48 Mhz */
	out_8(&cdm->ext_48mhz_en, 0x00);
	out_8(&cdm->fd_enable, 0x01);
	if (in_be32(&cdm->rstcfg) & 0x40)	/* Assumes 33Mhz clock */
		out_be16(&cdm->fd_counters, 0x0001);
	else
		out_be16(&cdm->fd_counters, 0x5555);

	/* Unmap the regs */
	iounmap(cdm);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Grant C. Likely
120
99.17%
4
80.00%
Harvey Harrison
1
0.83%
1
20.00%
Total
121
100.00%
5
100.00%

/*
 * Fix setting of port_config register.
 *
 * Firmware is supposed to be responsible for this.  If you are creating a
 * new board port, do *NOT* duplicate this code.  Fix your boot firmware
 * to set it correctly in the first place
 */

static void __init

lite5200_fix_port_config(void)
{
	struct device_node *np;
	struct mpc52xx_gpio __iomem *gpio;
	u32 port_config;

	np = of_find_matching_node(NULL, mpc5200_gpio_ids);
	gpio = of_iomap(np, 0);
	of_node_put(np);
	if (!gpio) {
		printk(KERN_ERR "%s() failed. expect abnormal behavior\n",
		       __func__);
		return;
	}

	/* Set port config */
	port_config = in_be32(&gpio->port_config);

	port_config &= ~0x00800000;	/* 48Mhz internal, pin is GPIO  */

	port_config &= ~0x00007000;	/* USB port : Differential mode */
	port_config |=  0x00001000;	/*            USB 1 only        */

	port_config &= ~0x03000000;	/* ATA CS is on csb_4/5         */
	port_config |=  0x01000000;

	pr_debug("port_config: old:%x new:%x\n",
	         in_be32(&gpio->port_config), port_config);
	out_be32(&gpio->port_config, port_config);

	/* Unmap zone */
	iounmap(gpio);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Grant C. Likely
130
99.24%
4
80.00%
Harvey Harrison
1
0.76%
1
20.00%
Total
131
100.00%
5
100.00%

#ifdef CONFIG_PM


static void lite5200_suspend_prepare(void __iomem *mbar)
{
	u8 pin = 1;	/* GPIO_WKUP_1 (GPIO_PSC2_4) */
	u8 level = 0;	/* wakeup on low level */
	mpc52xx_set_wakeup_gpio(pin, level);

	/*
         * power down usb port
         * this needs to be called before of-ohci suspend code
         */

	/* set ports to "power switched" and "powered at the same time"
         * USB Rh descriptor A: NPS = 0, PSM = 0 */
	out_be32(mbar + 0x1048, in_be32(mbar + 0x1048) & ~0x300);
	/* USB Rh status: LPS = 1 - turn off power */
	out_be32(mbar + 0x1050, 0x00000001);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Domen Puncer
59
100.00%
2
100.00%
Total
59
100.00%
2
100.00%



static void lite5200_resume_finish(void __iomem *mbar)
{
	/* USB Rh status: LPSC = 1 - turn on power */
	out_be32(mbar + 0x1050, 0x00010000);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Domen Puncer
21
100.00%
2
100.00%
Total
21
100.00%
2
100.00%

#endif



static void __init lite5200_setup_arch(void)
{
	if (ppc_md.progress)
		ppc_md.progress("lite5200_setup_arch()", 0);

	/* Map important registers from the internal memory map */
	mpc52xx_map_common_devices();

	/* Some mpc5200 & mpc5200b related configuration */
	mpc5200_setup_xlb_arbiter();

	/* Fix things that firmware should have done. */
	lite5200_fix_clock_config();
	lite5200_fix_port_config();

#ifdef CONFIG_PM
	mpc52xx_suspend.board_suspend_prepare = lite5200_suspend_prepare;
	mpc52xx_suspend.board_resume_finish = lite5200_resume_finish;
	lite5200_pm_init();
#endif

	mpc52xx_setup_pci();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Grant C. Likely
38
61.29%
4
44.44%
Domen Puncer
18
29.03%
2
22.22%
Marian Balakowicz
4
6.45%
2
22.22%
John Rigby
2
3.23%
1
11.11%
Total
62
100.00%
9
100.00%


static const char * const board[] __initconst = {
	"fsl,lite5200",
	"fsl,lite5200b",
	NULL,
};

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */


static int __init lite5200_probe(void)
{
	return of_device_compatible_match(of_root, board);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Grant C. Likely
15
88.24%
3
75.00%
Benjamin Herrenschmidt
2
11.76%
1
25.00%
Total
17
100.00%
4
100.00%


define_machine(lite5200) 
{
	.name 		= "lite5200",
	.probe 		= lite5200_probe,
	.setup_arch 	= lite5200_setup_arch,
	.init		= mpc52xx_declare_of_platform_devices,
	.init_IRQ 	= mpc52xx_init_irq,
	.get_irq 	= mpc52xx_get_irq,
	.restart	= mpc52xx_restart,
	.calibrate_decr	= generic_calibrate_decr,
};
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Grant C. Likely
438
76.31%
9
42.86%
Domen Puncer
103
17.94%
2
9.52%
Marian Balakowicz
9
1.57%
2
9.52%
Al Viro
6
1.05%
1
4.76%
Sylvain Munaut
5
0.87%
1
4.76%
Uwe Kleine-König
4
0.70%
1
4.76%
Harvey Harrison
2
0.35%
1
4.76%
Andi Kleen
2
0.35%
1
4.76%
John Rigby
2
0.35%
1
4.76%
Benjamin Herrenschmidt
2
0.35%
1
4.76%
Li Yang
1
0.17%
1
4.76%
Total
574
100.00%
21
100.00%
Directory: arch/powerpc/platforms/52xx

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.