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/imx7-iomuxc-gpr.h>
8#include <linux/platform_device.h>
9#include <linux/phy.h>
10#include <linux/regmap.h>
11
12#include <asm/mach/arch.h>
13#include <asm/mach/map.h>
14
15#include "common.h"
16
17static int bcm54220_phy_fixup(struct phy_device *dev)
18{
19 /* enable RXC skew select RGMII copper mode */
20 phy_write(phydev: dev, regnum: 0x1e, val: 0x21);
21 phy_write(phydev: dev, regnum: 0x1f, val: 0x7ea8);
22 phy_write(phydev: dev, regnum: 0x1e, val: 0x2f);
23 phy_write(phydev: dev, regnum: 0x1f, val: 0x71b7);
24
25 return 0;
26}
27
28#define PHY_ID_BCM54220 0x600d8589
29
30static void __init imx7d_enet_phy_init(void)
31{
32 if (IS_BUILTIN(CONFIG_PHYLIB)) {
33 phy_register_fixup_for_uid(PHY_ID_BCM54220, phy_uid_mask: 0xffffffff,
34 run: bcm54220_phy_fixup);
35 }
36}
37
38static void __init imx7d_enet_clk_sel(void)
39{
40 struct regmap *gpr;
41
42 gpr = syscon_regmap_lookup_by_compatible(s: "fsl,imx7d-iomuxc-gpr");
43 if (!IS_ERR(ptr: gpr)) {
44 regmap_update_bits(map: gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, val: 0);
45 regmap_update_bits(map: gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, val: 0);
46 } else {
47 pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");
48 }
49}
50
51static inline void imx7d_enet_init(void)
52{
53 imx7d_enet_phy_init();
54 imx7d_enet_clk_sel();
55}
56
57static void __init imx7d_init_machine(void)
58{
59 imx_anatop_init();
60 imx7d_enet_init();
61}
62
63static void __init imx7d_init_late(void)
64{
65 if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
66 platform_device_register_simple(name: "imx-cpufreq-dt", id: -1, NULL, num: 0);
67}
68
69static void __init imx7d_init_irq(void)
70{
71 imx_init_revision_from_anatop();
72 imx7_src_init();
73 irqchip_init();
74}
75
76static const char *const imx7d_dt_compat[] __initconst = {
77 "fsl,imx7d",
78 "fsl,imx7s",
79 NULL,
80};
81
82DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
83 .smp = smp_ops(imx7_smp_ops),
84 .init_irq = imx7d_init_irq,
85 .init_machine = imx7d_init_machine,
86 .init_late = imx7d_init_late,
87 .dt_compat = imx7d_dt_compat,
88MACHINE_END
89

source code of linux/arch/arm/mach-imx/mach-imx7d.c