1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2015 Freescale Semiconductor, Inc.
5 #include <linux/irqchip.h>
6 #include <linux/mfd/syscon.h>
7 #include <linux/mfd/syscon/imx7-iomuxc-gpr.h>
8 #include <linux/of_platform.h>
10 #include <linux/regmap.h>
12 #include <asm/mach/arch.h>
13 #include <asm/mach/map.h>
17 static int ar8031_phy_fixup(struct phy_device *dev)
21 /* Set RGMII IO voltage to 1.8V */
22 phy_write(dev, 0x1d, 0x1f);
23 phy_write(dev, 0x1e, 0x8);
25 /* disable phy AR8031 SmartEEE function. */
26 phy_write(dev, 0xd, 0x3);
27 phy_write(dev, 0xe, 0x805d);
28 phy_write(dev, 0xd, 0x4003);
29 val = phy_read(dev, 0xe);
31 phy_write(dev, 0xe, val);
33 /* introduce tx clock delay */
34 phy_write(dev, 0x1d, 0x5);
35 val = phy_read(dev, 0x1e);
37 phy_write(dev, 0x1e, val);
42 static int bcm54220_phy_fixup(struct phy_device *dev)
44 /* enable RXC skew select RGMII copper mode */
45 phy_write(dev, 0x1e, 0x21);
46 phy_write(dev, 0x1f, 0x7ea8);
47 phy_write(dev, 0x1e, 0x2f);
48 phy_write(dev, 0x1f, 0x71b7);
53 #define PHY_ID_AR8031 0x004dd074
54 #define PHY_ID_BCM54220 0x600d8589
56 static void __init imx7d_enet_phy_init(void)
58 if (IS_BUILTIN(CONFIG_PHYLIB)) {
59 phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
61 phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
66 static void __init imx7d_enet_clk_sel(void)
70 gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr");
72 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0);
73 regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0);
75 pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n");
79 static inline void imx7d_enet_init(void)
81 imx7d_enet_phy_init();
85 static void __init imx7d_init_machine(void)
87 struct device *parent;
89 parent = imx_soc_device_init();
91 pr_warn("failed to initialize soc device\n");
97 static void __init imx7d_init_irq(void)
99 imx_init_revision_from_anatop();
104 static const char *const imx7d_dt_compat[] __initconst = {
110 DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
111 .init_irq = imx7d_init_irq,
112 .init_machine = imx7d_init_machine,
113 .dt_compat = imx7d_dt_compat,