aboutsummaryrefslogtreecommitdiffstats
path: root/arch/m68k/coldfire/m527x.c
blob: c0b3e28f91df91c7177d29487e278ddcc6944233 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
/***************************************************************************/

/*
 *	m527x.c  -- platform support for ColdFire 527x based boards
 *
 *	Sub-architcture dependent initialization code for the Freescale
 *	5270/5271 and 5274/5275 CPUs.
 *
 *	Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
 *	Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfuart.h>
#include <asm/mcfclk.h>

/***************************************************************************/

DEFINE_CLK(pll, "pll.0", MCF_CLK);
DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK);
DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK);
DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK);
DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK);
DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK);
DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK);
DEFINE_CLK(fec1, "fec.1", MCF_BUSCLK);

struct clk *mcf_clks[] = {
	&clk_pll,
	&clk_sys,
	&clk_mcfpit0,
	&clk_mcfpit1,
	&clk_mcfpit2,
	&clk_mcfpit3,
	&clk_mcfuart0,
	&clk_mcfuart1,
	&clk_mcfuart2,
	&clk_mcfqspi0,
	&clk_fec0,
	&clk_fec1,
	NULL
};

/***************************************************************************/

static void __init m527x_qspi_init(void)
{
#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
#if defined(CONFIG_M5271)
	u16 par;

	/* setup QSPS pins for QSPI with gpio CS control */
	writeb(0x1f, MCFGPIO_PAR_QSPI);
	/* and CS2 & CS3 as gpio */
	par = readw(MCFGPIO_PAR_TIMER);
	par &= 0x3f3f;
	writew(par, MCFGPIO_PAR_TIMER);
#elif defined(CONFIG_M5275)
	/* setup QSPS pins for QSPI with gpio CS control */
	writew(0x003e, MCFGPIO_PAR_QSPI);
#endif
#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
}

/***************************************************************************/

static void __init m527x_uarts_init(void)
{
	u16 sepmask;

	/*
	 * External Pin Mask Setting & Enable External Pin for Interface
	 */
	sepmask = readw(MCFGPIO_PAR_UART);
	sepmask |= UART0_ENABLE_MASK | UART1_ENABLE_MASK | UART2_ENABLE_MASK;
	writew(sepmask, MCFGPIO_PAR_UART);
}

/***************************************************************************/

static void __init m527x_fec_init(void)
{
	u8 v;

	/* Set multi-function pins to ethernet mode for fec0 */
#if defined(CONFIG_M5271)
	v = readb(MCFGPIO_PAR_FECI2C);
	writeb(v | 0xf0, MCFGPIO_PAR_FECI2C);
#else
	u16 par;

	par = readw(MCFGPIO_PAR_FECI2C);
	writew(par | 0xf00, MCFGPIO_PAR_FECI2C);
	v = readb(MCFGPIO_PAR_FEC0HL);
	writeb(v | 0xc0, MCFGPIO_PAR_FEC0HL);

	/* Set multi-function pins to ethernet mode for fec1 */
	par = readw(MCFGPIO_PAR_FECI2C);
	writew(par | 0xa0, MCFGPIO_PAR_FECI2C);
	v = readb(MCFGPIO_PAR_FEC1HL);
	writeb(v | 0xc0, MCFGPIO_PAR_FEC1HL);
#endif
}

/***************************************************************************/

void __init config_BSP(char *commandp, int size)
{
	mach_sched_init = hw_timer_init;
	m527x_uarts_init();
	m527x_fec_init();
	m527x_qspi_init();
}

/***************************************************************************/