1 /* 2 * Copyright (C) 2015 Freescale Semiconductor, Inc. 3 * 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. 7 */ 8 #include <linux/irqchip.h> 9 #include <linux/mfd/syscon.h> 10 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> 11 #include <linux/micrel_phy.h> 12 #include <linux/of_platform.h> 13 #include <linux/phy.h> 14 #include <linux/regmap.h> 15 #include <asm/mach/arch.h> 16 #include <asm/mach/map.h> 17 18 #include "common.h" 19 20 static void __init imx6ul_enet_clk_init(void) 21 { 22 struct regmap *gpr; 23 24 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr"); 25 if (!IS_ERR(gpr)) 26 regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR, 27 IMX6UL_GPR1_ENET_CLK_OUTPUT); 28 else 29 pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n"); 30 31 } 32 33 static int ksz8081_phy_fixup(struct phy_device *dev) 34 { 35 if (dev && dev->interface == PHY_INTERFACE_MODE_MII) { 36 phy_write(dev, 0x1f, 0x8110); 37 phy_write(dev, 0x16, 0x201); 38 } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) { 39 phy_write(dev, 0x1f, 0x8190); 40 phy_write(dev, 0x16, 0x202); 41 } 42 43 return 0; 44 } 45 46 static void __init imx6ul_enet_phy_init(void) 47 { 48 if (IS_BUILTIN(CONFIG_PHYLIB)) 49 phy_register_fixup_for_uid(PHY_ID_KSZ8081, 0xffffffff, 50 ksz8081_phy_fixup); 51 } 52 53 static inline void imx6ul_enet_init(void) 54 { 55 imx6ul_enet_clk_init(); 56 imx6ul_enet_phy_init(); 57 } 58 59 static void __init imx6ul_init_machine(void) 60 { 61 struct device *parent; 62 63 parent = imx_soc_device_init(); 64 if (parent == NULL) 65 pr_warn("failed to initialize soc device\n"); 66 67 of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); 68 imx6ul_enet_init(); 69 imx_anatop_init(); 70 imx6ul_pm_init(); 71 } 72 73 static void __init imx6ul_init_irq(void) 74 { 75 imx_init_revision_from_anatop(); 76 imx_src_init(); 77 irqchip_init(); 78 imx6_pm_ccm_init("fsl,imx6ul-ccm"); 79 } 80 81 static void __init imx6ul_init_late(void) 82 { 83 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) 84 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); 85 } 86 87 static const char *imx6ul_dt_compat[] __initconst = { 88 "fsl,imx6ul", 89 NULL, 90 }; 91 92 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)") 93 .init_irq = imx6ul_init_irq, 94 .init_machine = imx6ul_init_machine, 95 .init_late = imx6ul_init_late, 96 .dt_compat = imx6ul_dt_compat, 97 MACHINE_END 98