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
imx6ul_enet_clk_init(void)20 static void __init imx6ul_enet_clk_init(void)
21 {
22 struct regmap *gpr;
23
24 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr");
25 if (!IS_ERR(gpr))
26 regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR,
27 IMX6UL_GPR1_ENET_CLK_OUTPUT);
28 else
29 pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n");
30
31 }
32
ksz8081_phy_fixup(struct phy_device * dev)33 static int ksz8081_phy_fixup(struct phy_device *dev)
34 {
35 if (dev && dev->interface == PHY_INTERFACE_MODE_MII) {
36 phy_write(dev, 0x1f, 0x8110);
37 phy_write(dev, 0x16, 0x201);
38 } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) {
39 phy_write(dev, 0x1f, 0x8190);
40 phy_write(dev, 0x16, 0x202);
41 }
42
43 return 0;
44 }
45
imx6ul_enet_phy_init(void)46 static void __init imx6ul_enet_phy_init(void)
47 {
48 if (IS_BUILTIN(CONFIG_PHYLIB))
49 phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK,
50 ksz8081_phy_fixup);
51 }
52
imx6ul_enet_init(void)53 static inline void imx6ul_enet_init(void)
54 {
55 imx6ul_enet_clk_init();
56 imx6ul_enet_phy_init();
57 }
58
imx6ul_init_machine(void)59 static void __init imx6ul_init_machine(void)
60 {
61 struct device *parent;
62
63 parent = imx_soc_device_init();
64 if (parent == NULL)
65 pr_warn("failed to initialize soc device\n");
66
67 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
68 imx6ul_enet_init();
69 imx_anatop_init();
70 imx6ul_pm_init();
71 }
72
imx6ul_init_irq(void)73 static void __init imx6ul_init_irq(void)
74 {
75 imx_init_revision_from_anatop();
76 imx_src_init();
77 irqchip_init();
78 imx6_pm_ccm_init("fsl,imx6ul-ccm");
79 }
80
imx6ul_init_late(void)81 static void __init imx6ul_init_late(void)
82 {
83 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
84 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
85 }
86
87 static const char *imx6ul_dt_compat[] __initconst = {
88 "fsl,imx6ul",
89 NULL,
90 };
91
92 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)")
93 .init_irq = imx6ul_init_irq,
94 .init_machine = imx6ul_init_machine,
95 .init_late = imx6ul_init_late,
96 .dt_compat = imx6ul_dt_compat,
97 MACHINE_END
98