1 /*
2 * arch/arm/mach-imx/mm-imx21.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 /* MX21 memory map definition */
33 static struct map_desc imx21_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(MX21, AIPI, MT_DEVICE),
43 /*
44 * this fixed mapping covers:
45 * - CSI
46 * - ATA
47 */
48 imx_map_entry(MX21, SAHB1, MT_DEVICE),
49 /*
50 * this fixed mapping covers:
51 * - EMI
52 */
53 imx_map_entry(MX21, 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 */
mx21_map_io(void)61 void __init mx21_map_io(void)
62 {
63 iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
64 }
65
imx21_init_early(void)66 void __init imx21_init_early(void)
67 {
68 mxc_set_cpu_type(MXC_CPU_MX21);
69 imx_iomuxv1_init(MX21_IO_ADDRESS(MX21_GPIO_BASE_ADDR),
70 MX21_NUM_GPIO_PORT);
71 }
72
mx21_init_irq(void)73 void __init mx21_init_irq(void)
74 {
75 mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
76 }
77
78 static const struct resource imx21_audmux_res[] __initconst = {
79 DEFINE_RES_MEM(MX21_AUDMUX_BASE_ADDR, SZ_4K),
80 };
81
imx21_soc_init(void)82 void __init imx21_soc_init(void)
83 {
84 mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
85 mxc_device_init();
86
87 mxc_register_gpio("imx21-gpio", 0, MX21_GPIO1_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
88 mxc_register_gpio("imx21-gpio", 1, MX21_GPIO2_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
89 mxc_register_gpio("imx21-gpio", 2, MX21_GPIO3_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
90 mxc_register_gpio("imx21-gpio", 3, MX21_GPIO4_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
91 mxc_register_gpio("imx21-gpio", 4, MX21_GPIO5_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
92 mxc_register_gpio("imx21-gpio", 5, MX21_GPIO6_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
93
94 pinctrl_provide_dummies();
95 imx_add_imx_dma("imx21-dma", MX21_DMA_BASE_ADDR,
96 MX21_INT_DMACH0, 0); /* No ERR irq */
97 platform_device_register_simple("imx21-audmux", 0, imx21_audmux_res,
98 ARRAY_SIZE(imx21_audmux_res));
99 }
100