1 /*
2 * Copyright 2013 Freescale Semiconductor, Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 */
9
10 #include <linux/irqchip.h>
11 #include <linux/of.h>
12 #include <linux/of_platform.h>
13 #include <linux/mfd/syscon.h>
14 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
15 #include <linux/regmap.h>
16 #include <asm/mach/arch.h>
17 #include <asm/mach/map.h>
18
19 #include "common.h"
20 #include "cpuidle.h"
21
imx6sl_fec_init(void)22 static void __init imx6sl_fec_init(void)
23 {
24 struct regmap *gpr;
25
26 /* set FEC clock from internal PLL clock source */
27 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr");
28 if (!IS_ERR(gpr)) {
29 regmap_update_bits(gpr, IOMUXC_GPR1,
30 IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0);
31 regmap_update_bits(gpr, IOMUXC_GPR1,
32 IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0);
33 } else {
34 pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n");
35 }
36 }
37
imx6sl_init_late(void)38 static void __init imx6sl_init_late(void)
39 {
40 /* imx6sl reuses imx6q cpufreq driver */
41 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
42 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
43
44 imx6sl_cpuidle_init();
45 }
46
imx6sl_init_machine(void)47 static void __init imx6sl_init_machine(void)
48 {
49 struct device *parent;
50
51 mxc_arch_reset_init_dt();
52
53 parent = imx_soc_device_init();
54 if (parent == NULL)
55 pr_warn("failed to initialize soc device\n");
56
57 of_platform_populate(NULL, of_default_bus_match_table, NULL, parent);
58
59 imx6sl_fec_init();
60 imx_anatop_init();
61 imx6sl_pm_init();
62 }
63
imx6sl_init_irq(void)64 static void __init imx6sl_init_irq(void)
65 {
66 imx_init_revision_from_anatop();
67 imx_init_l2cache();
68 imx_src_init();
69 imx_gpc_init();
70 irqchip_init();
71 }
72
73 static const char * const imx6sl_dt_compat[] __initconst = {
74 "fsl,imx6sl",
75 NULL,
76 };
77
78 DT_MACHINE_START(IMX6SL, "Freescale i.MX6 SoloLite (Device Tree)")
79 .map_io = debug_ll_io_init,
80 .init_irq = imx6sl_init_irq,
81 .init_machine = imx6sl_init_machine,
82 .init_late = imx6sl_init_late,
83 .dt_compat = imx6sl_dt_compat,
84 .restart = mxc_restart,
85 MACHINE_END
86