Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git...
[cascardo/linux.git] / arch / arm / mach-imx / mach-imx6ul.c
1 /*
2  * Copyright (C) 2015 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 #include <linux/irqchip.h>
9 #include <linux/mfd/syscon.h>
10 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
11 #include <linux/micrel_phy.h>
12 #include <linux/of_platform.h>
13 #include <linux/phy.h>
14 #include <linux/regmap.h>
15 #include <asm/mach/arch.h>
16 #include <asm/mach/map.h>
17
18 #include "common.h"
19 #include "cpuidle.h"
20
21 static void __init imx6ul_enet_clk_init(void)
22 {
23         struct regmap *gpr;
24
25         gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr");
26         if (!IS_ERR(gpr))
27                 regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR,
28                                    IMX6UL_GPR1_ENET_CLK_OUTPUT);
29         else
30                 pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n");
31
32 }
33
34 static int ksz8081_phy_fixup(struct phy_device *dev)
35 {
36         if (dev && dev->interface == PHY_INTERFACE_MODE_MII) {
37                 phy_write(dev, 0x1f, 0x8110);
38                 phy_write(dev, 0x16, 0x201);
39         } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) {
40                 phy_write(dev, 0x1f, 0x8190);
41                 phy_write(dev, 0x16, 0x202);
42         }
43
44         return 0;
45 }
46
47 static void __init imx6ul_enet_phy_init(void)
48 {
49         if (IS_BUILTIN(CONFIG_PHYLIB))
50                 phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK,
51                                            ksz8081_phy_fixup);
52 }
53
54 static inline void imx6ul_enet_init(void)
55 {
56         imx6ul_enet_clk_init();
57         imx6ul_enet_phy_init();
58 }
59
60 static void __init imx6ul_init_machine(void)
61 {
62         struct device *parent;
63
64         parent = imx_soc_device_init();
65         if (parent == NULL)
66                 pr_warn("failed to initialize soc device\n");
67
68         of_platform_default_populate(NULL, NULL, parent);
69         imx6ul_enet_init();
70         imx_anatop_init();
71         imx6ul_pm_init();
72 }
73
74 static void __init imx6ul_init_irq(void)
75 {
76         imx_init_revision_from_anatop();
77         imx_src_init();
78         irqchip_init();
79         imx6_pm_ccm_init("fsl,imx6ul-ccm");
80 }
81
82 static void __init imx6ul_init_late(void)
83 {
84         imx6sx_cpuidle_init();
85
86         if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
87                 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
88 }
89
90 static const char * const imx6ul_dt_compat[] __initconst = {
91         "fsl,imx6ul",
92         NULL,
93 };
94
95 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)")
96         .init_irq       = imx6ul_init_irq,
97         .init_machine   = imx6ul_init_machine,
98         .init_late      = imx6ul_init_late,
99         .dt_compat      = imx6ul_dt_compat,
100 MACHINE_END