1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2015 Freescale Semiconductor, Inc.
4 */
5 #include <linux/irqchip.h>
6 #include <linux/mfd/syscon.h>
7 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
8 #include <linux/micrel_phy.h>
9 #include <linux/of_platform.h>
10 #include <linux/phy.h>
11 #include <linux/regmap.h>
12 #include <asm/mach/arch.h>
13 #include <asm/mach/map.h>
14
15 #include "common.h"
16 #include "cpuidle.h"
17
imx6ul_enet_clk_init(void)18 static void __init imx6ul_enet_clk_init(void)
19 {
20 struct regmap *gpr;
21
22 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr");
23 if (!IS_ERR(gpr))
24 regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR,
25 IMX6UL_GPR1_ENET_CLK_OUTPUT);
26 else
27 pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n");
28 }
29
ksz8081_phy_fixup(struct phy_device * dev)30 static int ksz8081_phy_fixup(struct phy_device *dev)
31 {
32 if (dev && dev->interface == PHY_INTERFACE_MODE_MII) {
33 phy_write(dev, 0x1f, 0x8110);
34 phy_write(dev, 0x16, 0x201);
35 } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) {
36 phy_write(dev, 0x1f, 0x8190);
37 phy_write(dev, 0x16, 0x202);
38 }
39
40 return 0;
41 }
42
imx6ul_enet_phy_init(void)43 static void __init imx6ul_enet_phy_init(void)
44 {
45 if (IS_BUILTIN(CONFIG_PHYLIB))
46 phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK,
47 ksz8081_phy_fixup);
48 }
49
imx6ul_enet_init(void)50 static inline void imx6ul_enet_init(void)
51 {
52 imx6ul_enet_clk_init();
53 imx6ul_enet_phy_init();
54 }
55
imx6ul_init_machine(void)56 static void __init imx6ul_init_machine(void)
57 {
58 of_platform_default_populate(NULL, NULL, NULL);
59 imx6ul_enet_init();
60 imx_anatop_init();
61 imx6ul_pm_init();
62 }
63
imx6ul_init_irq(void)64 static void __init imx6ul_init_irq(void)
65 {
66 imx_init_revision_from_anatop();
67 imx_src_init();
68 irqchip_init();
69 imx6_pm_ccm_init("fsl,imx6ul-ccm");
70 }
71
imx6ul_init_late(void)72 static void __init imx6ul_init_late(void)
73 {
74 imx6sx_cpuidle_init();
75
76 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
77 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
78 }
79
80 static const char * const imx6ul_dt_compat[] __initconst = {
81 "fsl,imx6ul",
82 "fsl,imx6ull",
83 NULL,
84 };
85
86 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)")
87 .init_irq = imx6ul_init_irq,
88 .init_machine = imx6ul_init_machine,
89 .init_late = imx6ul_init_late,
90 .dt_compat = imx6ul_dt_compat,
91 MACHINE_END
92