2 * Copyright 2014 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.
9 #include <linux/irqchip.h>
10 #include <linux/of_platform.h>
11 #include <linux/phy.h>
12 #include <linux/regmap.h>
13 #include <linux/mfd/syscon.h>
14 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
15 #include <asm/mach/arch.h>
16 #include <asm/mach/map.h>
21 static int ar8031_phy_fixup(struct phy_device *dev)
25 /* Set RGMII IO voltage to 1.8V */
26 phy_write(dev, 0x1d, 0x1f);
27 phy_write(dev, 0x1e, 0x8);
29 /* introduce tx clock delay */
30 phy_write(dev, 0x1d, 0x5);
31 val = phy_read(dev, 0x1e);
33 phy_write(dev, 0x1e, val);
38 #define PHY_ID_AR8031 0x004dd074
39 static void __init imx6sx_enet_phy_init(void)
41 if (IS_BUILTIN(CONFIG_PHYLIB))
42 phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
46 static void __init imx6sx_enet_clk_sel(void)
50 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sx-iomuxc-gpr");
52 regmap_update_bits(gpr, IOMUXC_GPR1,
53 IMX6SX_GPR1_FEC_CLOCK_MUX_SEL_MASK, 0);
54 regmap_update_bits(gpr, IOMUXC_GPR1,
55 IMX6SX_GPR1_FEC_CLOCK_PAD_DIR_MASK, 0);
57 pr_err("failed to find fsl,imx6sx-iomux-gpr regmap\n");
61 static inline void imx6sx_enet_init(void)
63 imx6sx_enet_phy_init();
64 imx6sx_enet_clk_sel();
67 static void __init imx6sx_init_machine(void)
69 struct device *parent;
71 parent = imx_soc_device_init();
73 pr_warn("failed to initialize soc device\n");
75 of_platform_default_populate(NULL, NULL, parent);
82 static void __init imx6sx_init_irq(void)
85 imx_init_revision_from_anatop();
89 imx6_pm_ccm_init("fsl,imx6sx-ccm");
92 static void __init imx6sx_init_late(void)
94 imx6sx_cpuidle_init();
96 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
97 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
100 static const char * const imx6sx_dt_compat[] __initconst = {
105 DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)")
108 .init_irq = imx6sx_init_irq,
109 .init_machine = imx6sx_init_machine,
110 .dt_compat = imx6sx_dt_compat,
111 .init_late = imx6sx_init_late,