Merge tag 'samsung-soc-4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk...
[sfrench/cifs-2.6.git] / arch / arm / mach-imx / mach-imx51.c
1 /*
2  * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
3  * Copyright 2011 Linaro Ltd.
4  *
5  * The code contained herein is licensed under the GNU General Public
6  * License. You may obtain a copy of the GNU General Public License
7  * Version 2 or later at the following locations:
8  *
9  * http://www.opensource.org/licenses/gpl-license.html
10  * http://www.gnu.org/copyleft/gpl.html
11  */
12
13 #include <linux/io.h>
14 #include <linux/irq.h>
15 #include <linux/of_irq.h>
16 #include <linux/of_platform.h>
17 #include <asm/mach/arch.h>
18 #include <asm/mach/time.h>
19
20 #include "common.h"
21 #include "hardware.h"
22
23 static void __init imx51_init_early(void)
24 {
25         mxc_set_cpu_type(MXC_CPU_MX51);
26 }
27
28 /*
29  * The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
30  * the Freescale marketing division. However this did not remove the
31  * hardware from the chip which still needs to be configured for proper
32  * IPU support.
33  */
34 #define MX51_MIPI_HSC_BASE 0x83fdc000
35 static void __init imx51_ipu_mipi_setup(void)
36 {
37         void __iomem *hsc_addr;
38
39         hsc_addr = ioremap(MX51_MIPI_HSC_BASE, SZ_16K);
40         WARN_ON(!hsc_addr);
41
42         /* setup MIPI module to legacy mode */
43         imx_writel(0xf00, hsc_addr);
44
45         /* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
46         imx_writel(imx_readl(hsc_addr + 0x800) | 0x30ff, hsc_addr + 0x800);
47
48         iounmap(hsc_addr);
49 }
50
51 static void __init imx51_dt_init(void)
52 {
53         imx51_ipu_mipi_setup();
54         imx_src_init();
55
56         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
57
58         imx_aips_allow_unprivileged_access("fsl,imx51-aipstz");
59 }
60
61 static void __init imx51_init_late(void)
62 {
63         mx51_neon_fixup();
64         imx51_pm_init();
65 }
66
67 static const char * const imx51_dt_board_compat[] __initconst = {
68         "fsl,imx51",
69         NULL
70 };
71
72 DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)")
73         .init_early     = imx51_init_early,
74         .init_irq       = tzic_init_irq,
75         .init_machine   = imx51_dt_init,
76         .init_late      = imx51_init_late,
77         .dt_compat      = imx51_dt_board_compat,
78 MACHINE_END