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 #include "cpuidle.h" 20 21 static void __init imx6ul_enet_clk_init(void) 22 { 23 struct regmap *gpr; 24 25 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr"); 26 if (!IS_ERR(gpr)) 27 regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR, 28 IMX6UL_GPR1_ENET_CLK_OUTPUT); 29 else 30 pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n"); 31 32 } 33 34 static int ksz8081_phy_fixup(struct phy_device *dev) 35 { 36 if (dev && dev->interface == PHY_INTERFACE_MODE_MII) { 37 phy_write(dev, 0x1f, 0x8110); 38 phy_write(dev, 0x16, 0x201); 39 } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) { 40 phy_write(dev, 0x1f, 0x8190); 41 phy_write(dev, 0x16, 0x202); 42 } 43 44 return 0; 45 } 46 47 static void __init imx6ul_enet_phy_init(void) 48 { 49 if (IS_BUILTIN(CONFIG_PHYLIB)) 50 phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK, 51 ksz8081_phy_fixup); 52 } 53 54 static inline void imx6ul_enet_init(void) 55 { 56 imx6ul_enet_clk_init(); 57 imx6ul_enet_phy_init(); 58 } 59 60 static void __init imx6ul_init_machine(void) 61 { 62 struct device *parent; 63 64 parent = imx_soc_device_init(); 65 if (parent == NULL) 66 pr_warn("failed to initialize soc device\n"); 67 68 of_platform_default_populate(NULL, NULL, parent); 69 imx6ul_enet_init(); 70 imx_anatop_init(); 71 imx6ul_pm_init(); 72 } 73 74 static void __init imx6ul_init_irq(void) 75 { 76 imx_init_revision_from_anatop(); 77 imx_src_init(); 78 irqchip_init(); 79 imx6_pm_ccm_init("fsl,imx6ul-ccm"); 80 } 81 82 static void __init imx6ul_init_late(void) 83 { 84 imx6sx_cpuidle_init(); 85 86 if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) 87 platform_device_register_simple("imx6q-cpufreq", -1, NULL, 0); 88 } 89 90 static const char * const imx6ul_dt_compat[] __initconst = { 91 "fsl,imx6ul", 92 "fsl,imx6ull", 93 NULL, 94 }; 95 96 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)") 97 .init_irq = imx6ul_init_irq, 98 .init_machine = imx6ul_init_machine, 99 .init_late = imx6ul_init_late, 100 .dt_compat = imx6ul_dt_compat, 101 MACHINE_END 102