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
17 static int bcm54220_phy_fixup(struct phy_device *dev)
18 {
19 /* enable RXC skew select RGMII copper mode */
20 phy_write(dev, 0x1e, 0x21);
21 phy_write(dev, 0x1f, 0x7ea8);
22 phy_write(dev, 0x1e, 0x2f);
23 phy_write(dev, 0x1f, 0x71b7);
24
25 return 0;
26 }
27
28 #define PHY_ID_BCM54220 0x600d8589
29
30 static void __init imx7d_enet_phy_init(void)
31 {
32 if (IS_BUILTIN(CONFIG_PHYLIB)) {
33 phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
34 bcm54220_phy_fixup);
35 }
36 }
37
38 static void __init imx7d_enet_clk_sel(void)
39 {
40 struct regmap *gpr;
41
42 gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr");
43 if (!IS_ERR(gpr)) {
44 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0);
45 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0);
46 } else {
47 pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");
48 }
49 }
50
51 static inline void imx7d_enet_init(void)
52 {
53 imx7d_enet_phy_init();
54 imx7d_enet_clk_sel();
55 }
56
57 static void __init imx7d_init_machine(void)
58 {
59 imx_anatop_init();
60 imx7d_enet_init();
61 }
62
63 static void __init imx7d_init_late(void)
64 {
65 if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
66 platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);
67 }
68
69 static void __init imx7d_init_irq(void)
70 {
71 imx_init_revision_from_anatop();
72 imx7_src_init();
73 irqchip_init();
74 }
75
76 static const char *const imx7d_dt_compat[] __initconst = {
77 "fsl,imx7d",
78 "fsl,imx7s",
79 NULL,
80 };
81
82 DT_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,
88 MACHINE_END
89
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