1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2015 Freescale Semiconductor, Inc. 4 */ 5 #include <linux/irqchip.h> 6 #include <linux/mfd/syscon.h> 7 #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> 8 #include <linux/micrel_phy.h> 9 #include <linux/of_platform.h> 10 #include <linux/phy.h> 11 #include <linux/regmap.h> 12 #include <asm/mach/arch.h> 13 #include <asm/mach/map.h> 14 15 #include "common.h" 16 #include "cpuidle.h" 17 18 static void __init imx6ul_enet_clk_init(void) 19 { 20 struct regmap *gpr; 21 22 gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr"); 23 if (!IS_ERR(gpr)) 24 regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR, 25 IMX6UL_GPR1_ENET_CLK_OUTPUT); 26 else 27 pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n"); 28 29 } 30 31 static int ksz8081_phy_fixup(struct phy_device *dev) 32 { 33 if (dev && dev->interface == PHY_INTERFACE_MODE_MII) { 34 phy_write(dev, 0x1f, 0x8110); 35 phy_write(dev, 0x16, 0x201); 36 } else if (dev && dev->interface == PHY_INTERFACE_MODE_RMII) { 37 phy_write(dev, 0x1f, 0x8190); 38 phy_write(dev, 0x16, 0x202); 39 } 40 41 return 0; 42 } 43 44 static void __init imx6ul_enet_phy_init(void) 45 { 46 if (IS_BUILTIN(CONFIG_PHYLIB)) 47 phy_register_fixup_for_uid(PHY_ID_KSZ8081, MICREL_PHY_ID_MASK, 48 ksz8081_phy_fixup); 49 } 50 51 static inline void imx6ul_enet_init(void) 52 { 53 imx6ul_enet_clk_init(); 54 imx6ul_enet_phy_init(); 55 } 56 57 static void __init imx6ul_init_machine(void) 58 { 59 struct device *parent; 60 61 parent = imx_soc_device_init(); 62 if (parent == NULL) 63 pr_warn("failed to initialize soc device\n"); 64 65 of_platform_default_populate(NULL, NULL, parent); 66 imx6ul_enet_init(); 67 imx_anatop_init(); 68 imx6ul_pm_init(); 69 } 70 71 static void __init imx6ul_init_irq(void) 72 { 73 imx_init_revision_from_anatop(); 74 imx_src_init(); 75 irqchip_init(); 76 imx6_pm_ccm_init("fsl,imx6ul-ccm"); 77 } 78 79 static void __init imx6ul_init_late(void) 80 { 81 imx6sx_cpuidle_init(); 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 * const imx6ul_dt_compat[] __initconst = { 88 "fsl,imx6ul", 89 "fsl,imx6ull", 90 NULL, 91 }; 92 93 DT_MACHINE_START(IMX6UL, "Freescale i.MX6 Ultralite (Device Tree)") 94 .init_irq = imx6ul_init_irq, 95 .init_machine = imx6ul_init_machine, 96 .init_late = imx6ul_init_late, 97 .dt_compat = imx6ul_dt_compat, 98 MACHINE_END 99