2 * Copyright (C) 2015 Freescale Semiconductor, Inc.
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.
8 #include <linux/irqchip.h>
9 #include <linux/mfd/syscon.h>
10 #include <linux/mfd/syscon/imx7-iomuxc-gpr.h>
11 #include <linux/of_platform.h>
12 #include <linux/phy.h>
13 #include <linux/regmap.h>
15 #include <asm/mach/arch.h>
16 #include <asm/mach/map.h>
20 static int ar8031_phy_fixup(struct phy_device *dev)
24 /* Set RGMII IO voltage to 1.8V */
25 phy_write(dev, 0x1d, 0x1f);
26 phy_write(dev, 0x1e, 0x8);
28 /* disable phy AR8031 SmartEEE function. */
29 phy_write(dev, 0xd, 0x3);
30 phy_write(dev, 0xe, 0x805d);
31 phy_write(dev, 0xd, 0x4003);
32 val = phy_read(dev, 0xe);
34 phy_write(dev, 0xe, val);
36 /* introduce tx clock delay */
37 phy_write(dev, 0x1d, 0x5);
38 val = phy_read(dev, 0x1e);
40 phy_write(dev, 0x1e, val);
45 static int bcm54220_phy_fixup(struct phy_device *dev)
47 /* enable RXC skew select RGMII copper mode */
48 phy_write(dev, 0x1e, 0x21);
49 phy_write(dev, 0x1f, 0x7ea8);
50 phy_write(dev, 0x1e, 0x2f);
51 phy_write(dev, 0x1f, 0x71b7);
56 #define PHY_ID_AR8031 0x004dd074
57 #define PHY_ID_BCM54220 0x600d8589
59 static void __init imx7d_enet_phy_init(void)
61 if (IS_BUILTIN(CONFIG_PHYLIB)) {
62 phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
64 phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
69 static void __init imx7d_enet_clk_sel(void)
73 gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr");
75 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0);
76 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0);
78 pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");
82 static inline void imx7d_enet_init(void)
84 imx7d_enet_phy_init();
88 static void __init imx7d_init_machine(void)
90 struct device *parent;
92 parent = imx_soc_device_init();
94 pr_warn("failed to initialize soc device\n");
100 static void __init imx7d_init_irq(void)
102 imx_init_revision_from_anatop();
107 static const char *const imx7d_dt_compat[] __initconst = {
113 DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
114 .init_irq = imx7d_init_irq,
115 .init_machine = imx7d_init_machine,
116 .dt_compat = imx7d_dt_compat,