1 /*
2 * arch/arm/mach-imx/mm-imx27.c
3 *
4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
18 * MA 02110-1301, USA.
19 */
20
21 #include <linux/mm.h>
22 #include <linux/init.h>
23 #include <linux/pinctrl/machine.h>
24 #include <asm/pgtable.h>
25 #include <asm/mach/map.h>
26
27 #include "common.h"
28 #include "devices/devices-common.h"
29 #include "hardware.h"
30 #include "iomux-v1.h"
31
32 /* MX27 memory map definition */
33 static struct map_desc imx27_io_desc[] __initdata = {
34 /*
35 * this fixed mapping covers:
36 * - AIPI1
37 * - AIPI2
38 * - AITC
39 * - ROM Patch
40 * - and some reserved space
41 */
42 imx_map_entry(MX27, AIPI, MT_DEVICE),
43 /*
44 * this fixed mapping covers:
45 * - CSI
46 * - ATA
47 */
48 imx_map_entry(MX27, SAHB1, MT_DEVICE),
49 /*
50 * this fixed mapping covers:
51 * - EMI
52 */
53 imx_map_entry(MX27, X_MEMC, MT_DEVICE),
54 };
55
56 /*
57 * Initialize the memory map. It is called during the
58 * system startup to create static physical to virtual
59 * memory map for the IO modules.
60 */
mx27_map_io(void)61 void __init mx27_map_io(void)
62 {
63 iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
64 }
65
imx27_init_early(void)66 void __init imx27_init_early(void)
67 {
68 mxc_set_cpu_type(MXC_CPU_MX27);
69 mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR));
70 imx_iomuxv1_init(MX27_IO_ADDRESS(MX27_GPIO_BASE_ADDR),
71 MX27_NUM_GPIO_PORT);
72 }
73
mx27_init_irq(void)74 void __init mx27_init_irq(void)
75 {
76 mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
77 }
78
79 static const struct resource imx27_audmux_res[] __initconst = {
80 DEFINE_RES_MEM(MX27_AUDMUX_BASE_ADDR, SZ_4K),
81 };
82
imx27_soc_init(void)83 void __init imx27_soc_init(void)
84 {
85 mxc_device_init();
86
87 /* i.mx27 has the i.mx21 type gpio */
88 mxc_register_gpio("imx21-gpio", 0, MX27_GPIO1_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
89 mxc_register_gpio("imx21-gpio", 1, MX27_GPIO2_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
90 mxc_register_gpio("imx21-gpio", 2, MX27_GPIO3_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
91 mxc_register_gpio("imx21-gpio", 3, MX27_GPIO4_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
92 mxc_register_gpio("imx21-gpio", 4, MX27_GPIO5_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
93 mxc_register_gpio("imx21-gpio", 5, MX27_GPIO6_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
94
95 pinctrl_provide_dummies();
96 imx_add_imx_dma("imx27-dma", MX27_DMA_BASE_ADDR,
97 MX27_INT_DMACH0, 0); /* No ERR irq */
98 /* imx27 has the imx21 type audmux */
99 platform_device_register_simple("imx21-audmux", 0, imx27_audmux_res,
100 ARRAY_SIZE(imx27_audmux_res));
101 }
102