1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright 2014 Freescale Semiconductor, Inc.
6 #include <linux/irqchip.h>
7 #include <linux/of_platform.h>
9 #include <linux/regmap.h>
10 #include <linux/mfd/syscon.h>
11 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
12 #include <asm/mach/arch.h>
13 #include <asm/mach/map.h>
18 static int ar8031_phy_fixup(struct phy_device *dev)
22 /* Set RGMII IO voltage to 1.8V */
23 phy_write(dev, 0x1d, 0x1f);
24 phy_write(dev, 0x1e, 0x8);
26 /* introduce tx clock delay */
27 phy_write(dev, 0x1d, 0x5);
28 val = phy_read(dev, 0x1e);
30 phy_write(dev, 0x1e, val);
35 #define PHY_ID_AR8031 0x004dd074
36 static void __init imx6sx_enet_phy_init(void)
38 if (IS_BUILTIN(CONFIG_PHYLIB))
39 phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
43 static void __init imx6sx_enet_clk_sel(void)
47 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sx-iomuxc-gpr");
49 regmap_update_bits(gpr, IOMUXC_GPR1,
50 IMX6SX_GPR1_FEC_CLOCK_MUX_SEL_MASK, 0);
51 regmap_update_bits(gpr, IOMUXC_GPR1,
52 IMX6SX_GPR1_FEC_CLOCK_PAD_DIR_MASK, 0);
54 pr_err("failed to find fsl,imx6sx-iomux-gpr regmap\n");
58 static inline void imx6sx_enet_init(void)
60 imx6sx_enet_phy_init();
61 imx6sx_enet_clk_sel();
64 static void __init imx6sx_init_machine(void)
66 struct device *parent;
68 parent = imx_soc_device_init();
70 pr_warn("failed to initialize soc device\n");
72 of_platform_default_populate(NULL, NULL, parent);
79 static void __init imx6sx_init_irq(void)
82 imx_init_revision_from_anatop();
86 imx6_pm_ccm_init("fsl,imx6sx-ccm");
89 static void __init imx6sx_init_late(void)
91 imx6sx_cpuidle_init();
93 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ))
94 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0);
97 static const char * const imx6sx_dt_compat[] __initconst = {
102 DT_MACHINE_START(IMX6SX, "Freescale i.MX6 SoloX (Device Tree)")
105 .init_irq = imx6sx_init_irq,
106 .init_machine = imx6sx_init_machine,
107 .dt_compat = imx6sx_dt_compat,
108 .init_late = imx6sx_init_late,