1/*
2 * Bock-W board support
3 *
4 * Copyright (C) 2013  Renesas Solutions Corp.
5 * Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 */
16
17#include <linux/of_platform.h>
18
19#include <asm/mach/arch.h>
20
21#include "common.h"
22#include "r8a7778.h"
23
24/*
25 *	see board-bock.c for checking detail of dip-switch
26 */
27
28#define FPGA	0x18200000
29#define IRQ0MR	0x30
30#define COMCTLR	0x101c
31
32#define PFC	0xfffc0000
33#define PUPR4	0x110
34static void __init bockw_init(void)
35{
36	void __iomem *fpga;
37	void __iomem *pfc;
38
39#ifndef CONFIG_COMMON_CLK
40	r8a7778_clock_init();
41#endif
42	r8a7778_init_irq_extpin_dt(1);
43	r8a7778_add_dt_devices();
44
45	fpga = ioremap_nocache(FPGA, SZ_1M);
46	if (fpga) {
47		/*
48		 * CAUTION
49		 *
50		 * IRQ0/1 is cascaded interrupt from FPGA.
51		 * it should be cared in the future
52		 * Now, it is assuming IRQ0 was used only from SMSC.
53		 */
54		u16 val = ioread16(fpga + IRQ0MR);
55		val &= ~(1 << 4); /* enable SMSC911x */
56		iowrite16(val, fpga + IRQ0MR);
57
58		iounmap(fpga);
59	}
60
61	pfc = ioremap_nocache(PFC, 0x200);
62	if (pfc) {
63		/*
64		 * FIXME
65		 *
66		 * SDHI CD/WP pin needs pull-up
67		 */
68		iowrite32(ioread32(pfc + PUPR4) | (3 << 26), pfc + PUPR4);
69		iounmap(pfc);
70	}
71
72	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
73}
74
75static const char *bockw_boards_compat_dt[] __initdata = {
76	"renesas,bockw-reference",
77	NULL,
78};
79
80DT_MACHINE_START(BOCKW_DT, "bockw")
81	.init_early	= shmobile_init_delay,
82	.init_irq	= r8a7778_init_irq_dt,
83	.init_machine	= bockw_init,
84	.init_late	= shmobile_init_late,
85	.dt_compat	= bockw_boards_compat_dt,
86MACHINE_END
87