1 // SPDX-License-Identifier: GPL-2.0-or-later 1
2 /*
3 * Copyright 2011 Freescale Semiconductor, Inc
4 * Copyright 2011 Linaro Ltd.
5 */
6
7 #include <linux/io.h>
8 #include <linux/of.h>
9 #include <linux/of_address.h>
10 #include <asm/mach/arch.h>
11
12 #include "common.h"
13 #include "hardware.h"
14
15 static void __init imx51_init_early(void)
16 {
17 mxc_set_cpu_type(MXC_CPU_MX51);
18 }
19
20 /*
21 * The MIPI HSC unit has been removed from the
22 * the Freescale marketing division. However t
23 * hardware from the chip which still needs to
24 * IPU support.
25 */
26 #define MX51_MIPI_HSC_BASE 0x83fdc000
27 static void __init imx51_ipu_mipi_setup(void)
28 {
29 void __iomem *hsc_addr;
30
31 hsc_addr = ioremap(MX51_MIPI_HSC_BASE,
32 WARN_ON(!hsc_addr);
33
34 /* setup MIPI module to legacy mode */
35 imx_writel(0xf00, hsc_addr);
36
37 /* CSI mode: reserved; DI control mode
38 imx_writel(imx_readl(hsc_addr + 0x800)
39
40 iounmap(hsc_addr);
41 }
42
43 static void __init imx51_m4if_setup(void)
44 {
45 void __iomem *m4if_base;
46 struct device_node *np;
47
48 np = of_find_compatible_node(NULL, NUL
49 if (!np)
50 return;
51
52 m4if_base = of_iomap(np, 0);
53 of_node_put(np);
54 if (!m4if_base) {
55 pr_err("Unable to map M4IF reg
56 return;
57 }
58
59 /*
60 * Configure VPU and IPU with higher p
61 * in order to avoid artifacts during
62 */
63 writel_relaxed(0x00000203, m4if_base +
64 writel_relaxed(0x00000000, m4if_base +
65 writel_relaxed(0x00120125, m4if_base +
66 writel_relaxed(0x001901A3, m4if_base +
67 iounmap(m4if_base);
68 }
69
70 static void __init imx51_dt_init(void)
71 {
72 imx51_ipu_mipi_setup();
73 imx_src_init();
74 imx51_m4if_setup();
75 imx5_pmu_init();
76 imx_aips_allow_unprivileged_access("fs
77 }
78
79 static void __init imx51_init_late(void)
80 {
81 mx51_neon_fixup();
82 imx51_pm_init();
83 }
84
85 static const char * const imx51_dt_board_compa
86 "fsl,imx51",
87 NULL
88 };
89
90 DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (
91 .init_early = imx51_init_early,
92 .init_machine = imx51_dt_init,
93 .init_late = imx51_init_late,
94 .dt_compat = imx51_dt_board_compa
95 MACHINE_END
96
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